 Okay, let me start by describing the main items here. We have the map on the right-hand side, of course, which is the obvious bit. Down the left-hand panel, we have all the different tools and functions that are available. These expand. You just need to click on the different icons on the far left, and you'll open the different tabs to do different things. The search bar and some extra buttons are along the top. The left-hand header bar and the right-hand header bar, there's this clean drop-down menu here, which I will come to in a bit. I just want to flag that it's there at the moment. Before we get started, there's one clarification that follows on from what Laura says. When you take a subscription to DigiMap for schools, you get one username and password for use by everybody in school. So you can share it with staff, you can share it with pupils, you can even share it with parents if you want them to help with homework and so on. Do beware that they use it for educational purposes and for the schoolwork rather than for nice things that parents like to do, which is all part of the licensing. I just have to say that to make it very clear. The passwords for the password change have not yet been issued. They will be issued on the 28th of September, so don't panic if you don't have your new password yet. If you forget your password, please just contact our help desk and they can help you out. So I'm going to start by doing a search here. I'm going to start by searching for Edinburgh. Forgive the bias in our place names here. There are places that we know and places that we find are useful to illustrate particular points. So I'm going to type in Edinburgh in search box and top left hand corner and click the search button here. As you can see, we get two different lists. We get places in the UK and we get world places. So as with many places in this country, there are duplicate place names across the world, especially in places like the USA. So here we have Edinburgh City in Scotland. I just need to click on the entry in the list and it will zoom the map directly to the place that I choose. If I click on the world place names, let's choose Edinburgh, Indiana, and you can see that we get Edinburgh, Indiana there. Let's go back to Edinburgh City here because the OS maps are what I really want to show you. You can remove this list of search terms by just clicking the little black cross in the corner. That will also remove the marker, although your map will not move. We have a zoom bar here on the far right-hand side, which you can either just click and drag up and down to change the scale of your map, or you can use the plus and minus buttons underneath like this. If you are using a tablet, you could use a pinch zoom in and out, which is fairly standard behavior for a map. What I would say is be careful you don't pinch the green frame around the map because that can end up zooming too much of the application and it can get a bit muddled. Just make sure you stick the zoom within the map itself. I have a mouse here with a scroll wheel, so all I'm doing is scrolling in and out with my mouse wheel there. You can sometimes on a tablet also do a double click to zoom in, which is also quite useful. From my search term, I get a map of a particular scale. As you can see, I can zoom in and out of the maps and the scale of the map will change and the map itself changes according to the scale. Odense survey produced maps that are designed to be visible and acceptable and legible within particular scale ranges. When we get outside those scale ranges, we have to change the map product we're using, otherwise they become not very pretty and not very usable. As I zoom in here, you can see I get through the very, very detailed data and where we've got the edges of pavements, we can see individual monuments and so on. That's as far as I can zoom on this one, but as I zoom out, of course, this level of detail becomes illegible at smaller scales. We start to see a different product which does agree with generalization on those building outlines and we can see things a little bit more clearly. We do lose some detail. Obviously, as you zoom out, you will always lose some detail, but if you were teaching generalization, this is quite a good way to go about illustrating the point. As we zoom out a bit further, you can see we get the 1 to 25,000 map, which is what you might know as the paper explorer maps. This is just the digital equivalent of those. Zoom out a bit further still and we get the digital equivalent of the 1 to 50,000 land range maps, pink ones. Zoom out a bit further, we get to road out the style mapping and a bit further still, we get to different sort of road out mapping right out to a much simpler map which shows even less detail but gives us a much better view of a larger area. Once we get to these green maps, then looking at what we have as a global map. This style of map covers the whole globe. It is a single image. You can pan left and right up and down north, south, east, west, and you will eventually come to the edge of the image. It's unfortunate that as with Google Maps, you can scroll all the way around. We can't do the scrolling all the way around the world because what we have is a single image and it has edges. As you can see, I can move the map, click and drag to move to wherever I want. I can move anywhere in the world like this. I want to show you also this little button underneath the zoom bar on the right-hand side. It's a zoom to maximum extent. If I click that, we can see that the map will zoom right out to see the whole world. It's a very tricky thing to get the whole world visible on a screen. The amount of map you actually see will depend upon the resolution of your screen and the size of your screen. So if you have a very small tablet with a low resolution, you'll see much less of the world than if you have a very large monitor with a very high resolution. Going back to our search terms, you can also search for things like landmarks. I can search for Mount Everest and I click return and it will come up with Mount Everest. As you can see, it's there. I can click on that and then I can zoom in on the area there. Once we zoom in further on the non-UK locations, we find that we have not the survey mapping obviously because OS only covers Great Britain. We get to open source mapping. This is open street map, which of course has a different level of detail and is a different style. In very remote places like Mount Everest, there isn't much detail to see. But if we were to search for, say, the Eiffel Tower, we will see much more detail. And I can zoom in here. And as you see, as I zoom in on the Eiffel Tower, we get a much, much greater level of detail. The detail in this dataset varies depending upon the location in the world. It's sourced from a crowdsourced dataset. So it is put together and created by people who are interested in mapping and interested in the particular area that they live in. And as a consequence, there are some areas of the world that are very, very detailed like this one. And there are some areas where there is very little mapping. If I show you Paris like this, I'll search for Paris and we'll get the places UK and places world. I'm going to get the world places to show you some interesting ideas. So if I click on Paris front, you can see that that's a level of detail is really quite significant. It's as good as what we get in the UK. If I was to pick Paris, Texas in the USA, there's much less detail. So the road structure is there, but actually the only bit of detail about the buildings is the city centre. If I pick Paris, Kentucky, I get the same thing. Paris, Illinois, same thing again, but Paris, France, of course, which is the capital city, contains a lot more detail. So if you're looking at global places, places elsewhere in the world, do be aware that the level of detail may vary. And it depends really on the level of interest in the mapping community at large, how detailed those maps are. So I'm going to hit this down a little bit. So I'm going to hit this down a little bit. So I'm going to hit this down a little bit. So I'm going to hit this start again button here, which is the little circle one at the top. This will wipe everything clean and set me right back to the beginning. What I would say is that you can't break this. You can click on anything, it will not break. If you get stuck, hit the start again, and you go right back to the beginning. You may lose anything you've already done if you haven't saved it, but if you really stuck, that's the way to go. So I'm going to start now to show you some of the drawing tools. We're going to start by finding a school. I'm going to look for Newton Grange Primary School here. You should find that most schools in Britain are listed in this Gazetteer. There are some, of course, some that are new or some that have moved, which won't appear, but for the most part, most of them are there. So I'm going to click on this one and it will find the school here. I'll close the search results and I can zoom in on the school here. As you can see, my little school appears right in the middle. I'm going to zoom in so we can see the detail. I'm going to start by showing you some of the measurement tools. The measurement tools appear in the left-hand panel here. It's a little set square icon. We can firstly do a distance measurement. So I click on the distance radio button at the top and I'm going to start just by measuring the perimeter of the school fence like this. I'm going to generalize this just for speed, but I just click and drag some change direction and then when I finished, I double click. And as you can see, I get a little tooltip that gives me the distance of the line I've drawn in meters. In the left-hand panel, it gives me both metric and imperial measurements. These measurements are temporary. They won't print. We'll come to the printing options in a minute. I can do the same with the area. So if I wanted to measure the area of my school building, I can do exactly the same thing this way. Click and drag and click and drag to change direction. I'm going to be a bit rough from reading this for speed reasons. You can be as precise as you like. Move Peter style, double click to finish. And as you can see, the tooltip here will give me the area of the shape that I've drawn in square meters. Similarly, in the left-hand panel, it gives me both metric and imperial measurements. If you're measuring a large area like a forest or a national park or a country, you'll find that the acres and the kilometers squared, the units change according to the area that you're looking at. Since these measurements won't print, they will stay on the screen until I remove them. So for clarity, I'm going to just delete these measurements here. I click the delete measurements, radio button and hit delete all and the measurements will disappear. Next, I'm going to show you the drawing tools. So we start with the drawing tools here, which is the top tab on the left-hand panel. There are a number of drawing tools and when you select one of them, you will find that extra options open underneath. If you're using a tablet, you need to scroll down this panel in order to see all the options. For example, when I open the markers tab, we get a whole range of markers here and some settings and more options that fall below those. This is an inevitable consequence of trying to provide lots of functions that they will drop off the end. So do remember to scroll down and have a look if you can't see what you think you should be finding there. So the first thing I'm going to do is add a marker for my house. You can pick any kind of marker you like. Younger children love the smiley faces. I'm going to stick with a simple balloon here. I'm going to mark my house here. I'm going to change the... No, I'm not going to change anything at the moment. Sorry. I'm now going to draw a line which will allow me to measure the distance between home and school. So my line is here. I'm going to come out of my front door, take my route to school. Again, I'm simply clicking and dragging in order to get the line to change direction and I double click to finish. The select button is down here on the left-hand side. I can click that and then run my mouse over the line that I've drawn until I get the little hand. Click that to turn it yellow. This means the line is selected. Any of the options here on the left-hand side will now apply to the line I selected in yellow. So this one I'm going to change to make it red. I'm going to make it a dotted line and I'm going to make it quite fat so that everybody can see it. So I've made my line settings here and I click anywhere on the map to unselect the feature that I've selected. I can then use the measure tool up here on the top line and I can click on the line that I've just drawn and it will give me the measurement in metres. If I want to select the measurement itself now I can just click on the text itself and you can see there's a little yellow circle which is the anchor point. I'll leave the label as it is or I could edit it if I wanted but this will allow me to change the text to be larger or smaller so I can change the text so that it's a different colour. I can change the font like this and then again click anywhere off the map and it will make those settings take effect. If I wanted to draw the measurements that I'd done previously I'm going to click the shape option and I'm going to measure again the area of the school. So again I'm doing this quite roughly just for speed. This will allow me to draw the shape around the perimeter of the school. Once I've done that I will be able to measure it I'm going to go like this there's my shape that's my school building I can then click the measure tool again in the top bar here click on the shape that I've drawn and it will give me the measurement as an area in metre squared. While that shape is selected in yellow I can also change the line and fill settings to change its colour this one I'm going to change to green so it's going to have a dark green edge and I'm going to give it a pale green change like that. There we go. If you wanted to expand this into something a little bit more advanced you can add your own your own dataset to the map so rather than have every people add their own home location individually you could construct a simple spreadsheet of data points of locations with a label and upload those all at once. Let me show you what I've got here I have a small Excel spreadsheet which I hope I'm going to be able to open here and show you which looks like this this Excel spreadsheet has two very simple columns it has a grid reference column and it has a label instead of using grid references you could use post codes you could use eastings and northings you could use latitude and longitudes either will work the headings need to be slightly different because I've given in our help pages which I will show you in a minute once you've constructed your spreadsheet like this it has a label associated with each point I'm going to close that for now and if you want to add those points to your map you need to go to the adds data button here click browse select the file that you've created click open and then click import as you can see all the little points that I have in my spreadsheet have been uploaded to the map all in one go so for example you might want to do this with your class locations you could do it with anything actually this is a useful example to do it with where people live which you could do it in many different contexts this would then allow you to have conversations about how far away things are how long it takes to get to different places this particular example you might want to explore the different options for travelling from home to school so you could draw lines from from people's front doors and which route they would take to school like this or you might want to do as the crow flies you might also want to have conversations about how the route might vary depending on whether you go on foot or by bike or by bus or by car and have conversations about distances and so on like that we do have some learning resources which Laura will send you later on along with the recording relating to a class travel map and other distance measuring options there's also a learning resource about the Daily Mile which talks about how to measure around your playground to see how many laps of your school playground you might have to do in order to run a mile before school every morning it's the intention is to get children to brighten up to wake up properly lots of oxygen to their brain so that their learning is a bit more effective if you then wanted to print the work that you've done we have a print button at the top here oh no sorry I forgot one thing let's talk about adding images so if I wanted to add an image of my school to this map I can click the image button here and I click on the map itself to give it an anchor point click the browse and then I can find the photograph that I got to upload click upload and there is the photograph I've added I can then click and drag this around so it forms the right goes to the right place on my map I can also move the anchor point if I want if I got that not quite right so this way you can make things fit as you so wish on the map let's for a moment suggest we want to print this the print button is in the top header bar here so we click print and we get an extra window up this window has three main sections which has a left hand panel that gives you all the options you can give your map a title you can add your own name to it put my name in there you can either have the exact scale that you're seeing on the screen or you can round the scale to something a bit more sensible and it's entirely up to you it depends what you want if you change the scale you may find that the area on your map changes a little bit too it shouldn't change too much but that depends on the scale of your original map you can choose a print format PDF is good for just printing out and handing out if you wanted to copy and paste your map into or insert it into a PowerPoint presentation or a Word document or something else you might be better off having the jpeg version we can go up to A3 in size A4 is usually sufficient and you can change between portraits and landscape you can choose to include your drawings or you can take the drawings off that button there does not remove the drawings from your map on the screen it simply removes them from the print file so they won't print so we can add them back again if you add the natural grid lines you will find the map is ever so slightly smaller because we have to allow some space on the paper for the labelling of the grid lines if you want to print a legend that comes out as a separate on a separate page on the right hand side here we have two tabs there's a content preview and a layout preview the content preview will show you what the map will actually look like the layout preview will show you the area it covers so adding images to your map like this picture of the scroll can be misleading the image doesn't actually come out covering that much of the of the map so you have to take this in a little bit of faith to remove this map around to make sure the blue square covers all the annotations and the drawings that you want to include on your map so the content preview stays the same but the layout preview will give you an idea of the area when you hit generate print file at the bottom here this goes away and it will print it will generate a a digital file for you it does not send it to your printer so there is no chance of you using up printer credits or ink or paper just checking that what you've got is going to work so in this example here I can see that my map is all the annotations are visible I have a scale bar and a card on a scale it has my name it on the bottom left it has my title at the top and it has all the necessary logos and copyright statements on it and an author as well and the date if I like that I can then choose to send it to my printer from my web browser if I didn't like it I can simply close this tab and start again and try again manipulate things to get them better you can produce as many of those print files as you like there is no limit and there is nobody going to stop you doing it you can keep going until you find the one to get what you want out of it next I want to show you the key which is also in this left hand panel here as you can see you open the key and this is a sort of tree structure which allows you to see all the different categories and features showing on the map here this is a tree structure with opening and closing sections otherwise it would be so long it would be really hard to find anything I'm going to open the top one just to by way of an example and you can see that as I zoom out and get to a different map you'll see that the key changes according to the map that you see on the right hand side you have to keep opening the right sections but all the different symbols given on the map are all in here as you can see the annotations become a bit daft as you zoom out because of course they were designed to fit on the scale of the map that I was looking at originally but that's okay you can go back to the original map zoom right in and everything will fall back into place the next thing I want to show you is the grid referencing tool which is also part of the drawing tools grid referencing is a button here and you'll see that it opens a number of options you can either leave it set on automatic in which case if you click on a space or click on a location it will give you a grid reference that is appropriate for the scale of the map you're looking at this is a very detailed map showing all the building outlines and the very pavement edges and so on and therefore the grid reference is very detailed that grid reference will stay as it is as I zoom out but if I was to zoom out to start with and do a grid reference at a map of this scale let's pick this one here you'll see that I get a much coarser grid reference similarly if I zoom in a bit further and do it again I'll get a slightly more detailed one that's what happens on the automatic setting there may be occasions when you want a very specific grid reference in which case you can pick any one of these and the grid reference that will appear when you click on a location will be set according to that number of digits there and it won't change as you zoom in and out of the map we'd be welcome to have feedback on this this is a fairly new feature for us so if you have comments on how it works or doesn't work for you then we'd be very interested to hear them none of these things are set in stone and if something really doesn't work for you then we can make changes okay let's look for a minute at saving maps let's go back to the map that I drew earlier which is explain my annotations I wanted to save this map and come back and do some more work later I can use the save map function that's on the left-hand panel here it's the little filing cabinet with a star on it there's a note to have that I must raise here about data protection when you save your map you click here and you give your map a title we asked you to put class name and pupil name those are purely suggestions you need to put something in these fields does not have to be a name and it does not have to be identifying an individual they are simply guidelines all you need in here is something that will be able to that will allow you to retrieve the map at some point in the future and identify it as your particular map since everybody in your school logs in under the one username and password everybody who logs in can see all the maps that are visible in the save map function this particular map that I've drawn here for example a number of people's names and their locations on it this inevitably raises a data protection issue if you have a class of children and you're asking everybody to plot their home address on the same map and that map is then shared clearly there is a data protection issue there because everybody logs in under the same username and password there isn't anything we can do about this we cannot detect that it is personal data in advance we can't go back and check that the maps are not any personal data afterwards either however if it's something you are worried about you can disable the save map function completely so that nobody can see anything let me save this map here to finish this process and show you how it works I'm going to put my name there I'm just going to click save and as you can see the map that I've just saved appears in this left hand panel this is the one I did yesterday so I'm going to replace the drawings there is the map I drew yesterday and here is the map I drew just now so I'm going to click on that one in the left hand panel click on replace the drawings and then my map comes back again there are many other maps here that I've done over the past a few months and I can go back to any of those at any point and I can still come back to the one that I've drawn here so if you have any concerns about the data protection issue the way to remove the save maps function is to use this preferences option in the top right hand corner there's a drop down arrow next to the title region of schools and the first option is edit your preferences click on that you will need to enter your school pin that was issued with your password if you don't know your school pin please contact our help desk and we can help you with that we would suggest that you do not share the pin as widely as you share the password by all means give pupils the password do not give them the pin because otherwise they will be able to edit all the save maps and they have it with lots of functions the hide save maps hide save maps tab here you just slide the toggle across click save preferences and when I refresh the map using this start again button you'll notice that the save maps tab disappears from the left hand panel that doesn't mean that all your maps have disappeared and have been deleted completely you can retrieve them by adding the save map function back again which I'll do now to show you how to do it go back to edit your preferences click OK unhide the save maps tab save preferences refresh the map and the save map tab comes back again I can go back to the save maps that I've done earlier click on the one that I drew just now and the format will come back again I can of course go back to the join tools and I can still edit these maps again if I want to save them again to save any changes I will need to save it as a new map but I can't overwrite the existing map OK so I'm going to delete all the annotations I've got on this map now by using the delete all button I would also draw your attention to the modify buttons underneath here if you have selected a feature these modify buttons become available I don't have time to go through all those just now we have a digi byte session next week which will go through those it should only be a 10 or 15 minute session do explore them as I said earlier you can't get it wrong just hit the start again button if you get in a muddle delete all the annotations that I've added and clear the map up completely so I'm going to start again refresh my map completely and I'm going to start by showing you the buffer tools which are in the drawing tools hit this button here but I'm going to show you a different location for this first of all I'm going to add my own data I have a little file that has London tube stations in it so I'm going to go to the add your own data button hit the browse button find my London tube points click open and click import this is a small selection obviously of tube stations in London with a location and a label these labels come out quite big so I'm going to try and make them just a bit smaller I'm going to go back to the drawing tools I'm going to click select by box and I'm going to draw a big box around all the tube stations and you'll see they all turn yellow I'm then going to change the text size to be 16 point not bold and for Adana I'm going to leave them black because they're fairly easy to see like that so click off those you can see the text changes so somewhere in the middle here we have St Paul's Cathedral what I want to know is how many of these tube stations lie within half a mile of St Paul's Cathedral so I'm going to choose the buffer tool here I'm going to start with point buffer again to my buffer radius is 0.5 actually you can type anything you like in here we just give you some straightforward options just to make things a bit easier I'm going to do half a mile I'm going to change the settings to be a bright green edge and a bright green fill and then I'm going to click can you see the little blue dot that appears with my cursor I'm going to click on St Paul's Cathedral and this will draw me a circle that is half a mile in radius from the point at which I clicked exactly how many tube stations are in the area that I've selected so I can zoom in and out on this to show a bit more detail and the map underneath will change still to reflect this I can keep going do be aware that you can pick this circle up and move it so if you're panning around with the map be careful you don't move the circle because you might have to do the buffer zone again once the buffer zone is drawn it effectively acts like an annotation which you've just added to the map in the same way as you would add any other shape so it will move about if I wanted to show the line buffer I'm going to do the same again I'm going to pick a line maybe I want to know how many tube stations there are within half a kilometre of the river Thames so in which case I'm going to use the blue dot again I'm simply going to draw a line down the middle of the river Thames again I'm just using the click and drag method like this and when I get to the end where I want to be I'm just going to double click and that will draw the buffer zone there so that gives me an area which is half a kilometre from the line that I've drawn on both sides so examples of how you might use that might be for flooding purposes if you know that when the river floods the water goes at least a certain distance away from the river you might want to count how many houses or how many animals or how many study sites a particular interest might be affected by that flooding you could use it with noise pollution along roads you could use it with species that only travel a certain distance from a river or from a particular habitat there are lots of different options to choose from there while I'm here I would like to also show you the map selector I'm going to show you this button in the top left of the map here I click on this you'll show you what different maps you have available so within the UK we have one survey maps which are the contemporary ones we have aerial photography which is also contemporary we also have a 1950s map and an 1890s map these are both previous versions of OS maps the reason we have 1890s and 1950s is because those are the two dates for which we can guarantee we have universal coverage across the country the OS do have other maps available there are different dates obviously there wasn't no mapping going on in between those times but the mapping was done in a very patchy way and therefore finding universal coverage for any given date can be quite tricky and having maps that appear in some places and not in others for a particular date gets very confusing so we've picked two dates where we know we've got a map for every location the slider on the top here allows you to move seamlessly between the two dates so I've selected the 1890s map 1890s map on one side and the contemporary map on the other and as you can see that slider allows you to fade between the two interestingly then 1890s probably all those tube stations were already there you can look at the aerial photography too which goes into be quite detailed if we zoom in we can start to see quite a lot of detail in year two let's have a look at a slightly different place here I'm going to delete all the annotations and I'm going to search for York to show you what happens here York is an interesting city because it of course has grown quite significantly over time we're looking at the aerial photography there which is a modern-day aerial photography if we slide back to the 1890s map you can see that actually York was quite small I can now use the drawing tools again so let's draw a I'm going to use the freehand one just to draw a rough outline let's not argue over the particular boundaries that York used to be it's just an example and then if I slide between the contemporary map the old map and the contemporary map you can start to see exactly how much York has grown if I do the same outline on the contemporary outline of York you can see that actually the city has got quite a lot bigger like this again very happy to be corrected from somebody who knows York better than I do there we go and you can start to see how much change there has been over time we look at the 1950s one we find that that's there's also a fairly significant increase between the contemporary map and even the 1951 so if you're looking at things like the New Towns Act 1948 and the growth of all the New Towns around London this is quite a good way of showing exactly how much urbanisation has happened we do have some learning resources as well on things like coastal erosion where you can see over time the coast has regressed in some places of course it's increasing rather than regressing but there's some learning resources on our website I'm going to delete all those things to start again and I'm going to show you the geographical images next let's just go back to the contemporary maps and zoom in here the geographical image search is this little camera icon on the left hand side of the functions panel Geograph is a website which set out I think to create a collection of photographs that was intended to represent every one kilometre square in the country their website is complicated and we have made it slightly easier to access the images by adding them to the map so photographers can I think anybody can contribute to the Geograph archive all the images are vetted so there are almost no people visible in the images apart from crowds all the images are moderated so there's chances of something inappropriate getting through are almost zero the idea is that you search an area and you can search the tags on the photograph or particular things so if I do a search here I can either search for everything by putting a star in this search box and it will come up with a whole range of photographs taking this area clearly York is a busy place there are a lot of people who like to take photographs of it so these circles represent the number of photographs that you've got so if you zoom in you start seeing that the photographs separate out into their small groups you'll see all the images click on a thumbnail here and you start to see the whole the whole image itself if you wanted to search for something more specific you could search for a particular term so if I search for a church for example I can sort these according to their age or their title or their most relevant as I said the images are tagged by Geograph and the photographer and therefore we don't have any control over what photographs will appear for a particular search this just means that you sometimes have to be a bit creative about your search terms some photographers may just tag everything as place of worship some will be very specific and tag it with church or synagogue or something different so just be aware that if you don't find what you're looking for maybe adjust your search term to something that's related and see whether that produces any different results you can either click on the image itself so the images appear in the left hand panel here and that will bring up the thumbnail and show you where they are and you can click on the image to blow it up or you can click on the little camera icons that appear on the map itself and get a better image of what's there so we've done adding your own data we've done the image search I'd like to show you next the overlays so the overlays are a series of datasets that we have curated and put into groups which will allow you to add extra information to the map without doing any sort of processing talk we just start again and the overlays are here so the overlays appear in the left hand panel here it's the little layer icon we've grouped the overlays we've got into different sections just for ease of navigation when you're looking at the UK like this you'll find that the GB overlays become active you have to be looking at it to a particular scale before the layers activate otherwise you'd get a bit of a dark map sometimes the obvious one is the British national grid this is also linked in the reference grids at the bottom but it is in fact exactly the same thing just two links to the same same dataset as you zoom in of course this changes becomes more appropriate for the scale of the map you're looking at so when you zoom out you can start to see the curvature of the earth which is obviously at a smaller scale but as you zoom in the lines become straighter the curvature of the earth takes less impact keep going and the squares get smaller and allow you to reference grid references a bit more easily we've got two lines of labelling as we go along and if you keep going you get to the maps some of these maps have the grid lines already printed on them so if I take that off you can see the pale blue grid lines there they form part of the dataset itself that OS produced once we get to this level you can also add the roads and place names this is very useful if you're looking at the area of photography the area of photography is great it's very interesting it's fascinating and you can identify things very easily on it but it still has no labels so we've added the roads and place names labels as an overlay to the top so you can identify exactly where you are similarly if you're looking at the 1950s map or the 1890s map it can be quite interesting to have a modern roads and place names layer over the top you can then start to see what was underneath the M6 before the M6 was built things like that I suspect at some point we might look at the HS2 line and see what was under the HS2 line since that's also going to take up a fairly substantial chunk of land we also have postcodes put that back a second term pretty much postcodes is an extra layer in this left hand panel click on the postcodes these two will change according to the scale of the map you're looking at so if I zoom right out you can see what we get is the postcode areas that's the highest level unit and as we zoom in a bit further we start to get the postcode districts which is the next level down zoom in a bit further still we start to get to the postcode sectors which is DN93 and zoom in a little bit further still and we eventually get to what we call the postcode units which is the individual postcodes around here so these are all labelled individually and you can start to see how they are mathematically calculated rather than following any kind of sensible boundary sometimes especially in cities you will see little regular squares dotted in the amount of these these are not mistakes they are called vertical streets and they usually represent tall buildings or large buildings that have more than one postcode address in them so our office look in Edinburgh for example has I think at least two postcodes in it because it's so big tower blocks, high rise stories high rise flats often are labelled as vertical streets so the top five floors have one postcode and the next five floors have another one a single postcode usually encompasses about 15 different delivery points not a hard and fast rule but it's a good rule of thumb roughly so we can take the postcodes off under the reference grids you can see I'm going to zoom right out to cover the world you can have a look at the global ones so the reference grids are fairly straightforward so we'll do those next the latitude and longitude grid this of course also changes as you zoom in so I can zoom in on anywhere in the world and the latitude and longitude grid will adjust according to the scale of the map I'm looking at takes a wee bit of time to do that you could also add the major lines of latitude which gives you the equator and the trophics and the Arctic Circle down here so you might want to have some simple questions to ask like how many countries pass does the equator pass through if you wanted to look at the world boundaries here to give you a simpler map you can change these in the map selector and then you could count the number of different countries that the equator passes through again in the reference grid at the bottom here we've also got access to the British national grid but that of course will only activate once you look over the UK going back to the global overlays we have these split into world climate world human geography and world physical geography the world climate ones are these are datasets that have come from climate models so finding out exactly what they mean can be quite complicated so this is an average temperature between 1970 and 2000 and you can see the variation there but we've also got predictive average minimum temperatures and predictive average maximum temperatures which are also quite interesting so let's take that one off and you can just click these on and off to have a look at them once you've got them on you can then fade them in and out to start to see the map underneath if that's what you want to do so these are good places that are going to be more or less affected by any climate change we also have the world human geography overlays which are fascinating this one is my absolute favourite population density you can add these at the same time as the world climate data and start to fade the one and the other to see where the densely populated areas are and then maybe change that to have a look at where the hotspots are in terms of climate the population density is a fabulous data set it shows you the number of people per square kilometre and you can very quickly see exactly where the pressure is on human habitation Sahara desert clearly is very empty except for the Nile Delta so there are lots of questions and conversations to be had about why there why is the whole of Egypt population purely in that little line Northern India is another good example of how people congregate where there is fertile soil and food is plentiful many many conversations to be had about distribution of population across relatively settled areas like western Europe and the US is also very interesting we realise that the US might have 380 million people but there are still some very large areas with not many people there it's just a fascinating data set we also have the world time zones just turn the climate ones off the world time zone is also interesting if you think about going from A to B and how many time zones you might cross so one interesting thing we observed is that if you were to go from one side of Russia to the other I think you cross something like 8 or 9 different time zones and that's one country also a revelation for us when we started looking at this was that there are some countries that have half hour and three quarter hour time zones which just get must throw a few people off of course I think there are also conversations to be had about why countries choose to align their time zone the way they do so some of the time zone lines across the sea of course are straight and they move with the sun but over land of course some people are going to not fall in line with that so Libya here is a good example Libya probably ought to fall within this plus one time zone and it falls within plus two so why is that? what's the economic advantage? is there a practical advantage? is it political? is there another factor at play that means they have decided they will be two hours ahead rather than one hour ahead when it comes to world physical geography we have some interesting things to do with the world biomes this is a data set created by the world wildlife fund and I would encourage you to read the more information linking the left hand panel here because it tells you about how they've created them I'd like to show you this get feature info button which is at the top next to the print button click on this and then you can click on the map and it will highlight the area you've clicked on and it will give you much more information about the particular world biome in that location sometimes you can click on an area and you'll find there are more than one biome listed so you can select any one of these and give you the details of each one as you zoom in of course that becomes it becomes easier to identify a particular particular zones and it's turned that off in order to go back to activating the overlays panel here we also have mountain ranges volcanoes tectonic plates and tectonic plate boundaries the volcanoes are fascinating here it's unfortunate that given the underlying map is a single image was focused on Western Europe we do in fact pan to the edge of the world we do in fact pan to the edge of the world we do in fact pan to the edge of the world we do in fact pan to the edge of the world and we can pan the other way to the other edge of the world which just means we can't really see the full effect of the pacific ring of fire we've got it in two halves so here's the western half here and here's the eastern half here zooming in on any of these little triangles and volcanoes you can use the feature info button at the top again to click on any of the volcano and it will give you information about it so as we're about the volcano's name its type and its last eruption date and so on some of them of course are not active and some of them are very active and this information is contained in this button here if you were to add the tectonic plate boundaries and the volcanoes all at the same time you can start to see a coincidence there the plate boundaries will also tell you whether they are the convergent divergent subducting or transforming if that's what you want if that's what you would like to focus on if you didn't want just the boundaries you can have the plates themselves as well and these have a transparency slider on them as well so you can do a much better idea of what areas are covered by which plates something like that the mountain ranges also show quite usefully with the tectonic plate boundaries and you can start to see exactly where the well-significant mountain ranges are that concludes the overlays I think I'm happy to stick around for a bit to answer any questions if there's something you'd like me to repeat or show you again I'm happy to do that other than that that's pretty much everything for now