 OK. So Arun, would you like to start? Yes, I will start. Buwan can be accessed with buwan.nrc.gov.in, so that is the URL. And when the user is landing to a Buwan homepage, you will be having five different major section. That is the visualization and the free download. That is the first section. Second is the maps and OGC services. What is the G governance dashboard? The fourth is the state portal. The fifth is the download section. So now for this particular mapathon, the most of the data sets are available under the download section. That is the section number one. So right now you are seeing that under the visualization and free download, you are able to see Buwan 2D, Buwan 3D, Open Data Archive, M1 and environment. When you are going to the Open Data Archive, the interface will have the three different options to select the data. The data can be selected based on the sensor or based on the project or based on the theme. So like that, there are three different options are there. Right now our interest is to have the data of Avivs and the LIS-3 and the Cartodam. So these three products, we will be seeing that how it can be downloaded. So by default, it will be selected with the satellite or a sensor. When you are going to the select subcategory, you will be able to get the option that the scatterometer data, ocean set, and the resource set, LIS-3, and IMS-1 hyperspectal, other set one, the resource one 102 Avivs data. Now for that, start with you go with the LIS-3 data. So when I am selecting this LIS-3 data, the right side map view will be updated with the grid. The grid will be available in the regular shape. That is nothing but availability of the data in boon. So if the user wants to download the LIS-3 product, they can have four different options. One is the bounding box, the other one is the map sheet based download. What is the tiles based download? Fourth is the interactive drawing. For example, if any user wants to have the data of Gujarat region, they can have a freehand drawing like this. And then when the freehand drawing is completed, meaning you have to double click to complete the drawing, all the tiles will be highlighted here like this. Suppose if the user is interested to select any particular tile, then they can hold the Shift or Control button so they can click whatever the tile is required like this. The tile number based on the geographical reference, they can select and they can have a selection like this. Or the user wants to download the data based on the open series map toposheet number. Then they can type that OSM number. Then accordingly, the data will be filtered and it will be visible in the selection window. Now the next one is the bounding box. Suppose if the area of interest is known, what is your lower left? What is the upper right? If it is defined, then the data products will be selected. For example, my minimum longitude is 77, and the maximum is 78, and the latitude is 22, and the maximum latitude is 23. Like this, I want to download one degree by one degree tile. When I am selecting this one, immediately my map window will be highlighted with the corresponding selection of the tile and it will be visible like this. Now once the selection is completed, the user can go for a next. The next, the user will have three different options. One is the metadata, another one is view, another one is download. Now if you click view, the thumbnail of the quick view of that particular tile will be created and it will be visible here. At the same time, the tile also will be getting highlighted in the app window. If you want to download that one, the user can download option and it will be asking for login, so that the user should have the login with the boon. So now, how to create the login or how to have the access to the boon, the login page. To that one, you have to go the new user section. When you are clicking this new user section, it will be asking you the username and the email ID. So the email ID might be the working email ID, then the organization. So whatever is given with the asterisk symbol, that is the mandatory field. So we recommend you have the working email ID so that you can get your link. That link can be activated to have the username. So when you are doing that activation, you have to enter your password so that you will have your username and the password. And using that one, one can log into this boon portal and they can download it. For example, since I have my login, I will directly log in with my username and password and I will show that how the download can happen. So now I'm logging in with my username and password. Once the successful login is done, you can see that it will show that welcome user name. Whatever the username you have given, that username will be available here. So now when I'm pressing download, it will directly download that particular tile. The tile number is 77 East and 22 North. The corresponding bounding box also will be added. What is the lower left and what is the upper right for that particular tile? What is the size of that tile? Like a 2.2 MB it is showing. All the details will be available here. The people can download it. In the same way, the user wants to download the Avis data. That is 56 meter data. The Avis data can be selected here. And then the same tile mechanism, like whether it can be a bounding box based, a map sheet based or tile based or interactive thing. Like I just want to this time select only one particular tile from this coastal region. Now I'm selecting that particular tile. So as soon as the tile is selected, it will be highlighted with the red color. Now I'm going with the next option. Oh, here you can see that for that particular tile, you have multiple timeframe data. The data sets are ranging from 2009 to 2018. So these data sets can be used as a input for your time series analysis or change detection, what you are trying to do it here. So here you can download this temporal data. And the data can be used for finding out the change detection between 2009 to 2018 and various seasonal data sets are available in this particular selection. The same way, if I want to download the Cortesat one based digital elevation model, where one of the problem statement is for creating the drainage map or finding out the low-lying map, the digital elevation model will be very much helpful. Now that you can select Cortesat one under the Cortesat one, you have a Cortesat version 1.1.2.3. So we suggest you to go for your version three, so which is having all the improvements done. So what is all the improvements done and what is the intended use, what is the limitation, everything is recorded in the technical document. So the user can select, check the technical document area and they can download the document and they can get the details about all the, I mean the specification about the data sets, they can get it. So now this time what we will do is, we will select based on the map sheet number for that you have to give the open serious map sheet number. For example, I'm just giving whatever F43 A I'm giving. Once it is given, corresponding L will be reflected here directly in the table of view. So earlier you would have seen that the selection when you are doing through the map, you have to go for next option. But here since you are typing directly the map sheet number, the corresponding tiles are listed in the table view directly. Now if I want to view that particular thing, you can click view, then it will zoom to that particular area and then the relevant data will be overlaid on the map view and you will be able to see it. So here you can see that the drainage layer, how it is or the river stream, how it is flowing, you will be able to get it very nicely in this particular view. So this data sets can be used for slope map creation or the drainage map delineation or finding out to the low lying area. All the things that this digital elevation model will be very much useful. So like this, the user can select the different products and they can download it. All the different products are available. You can see that there is one section called the Goon Store. If you click that Goon Store, Goon Store page will be available. Here it will say that what all the different products are available and which year it is updated, what is the extent of each and every product and what are the expected size, those things will be there. Almost like we have 60 plus even the climate and environmental related products are also available and all those things are tabulated here and by clicking that product, you can directly land it to that particular page. So we suggest you to go through this Goon Store page so that you will be able to see the different products which is available for pre-download. So the next section is thematic services and we will be concentrating here how the different data sets, whatever is organized in Goon, how it can be consumed in your QGAs software. For that, you can see that whenever you are selecting any particular theme, there will be one option called web services. Once you are clicking the web services option, you will be getting two further options. One is a WMS link, another one is the web mapped tile service, that is that WMTS link. So now for example, what I will show you is, now if anybody wants to find out the hotspot between the 2005, six and 2015, 16, now for that what is the requirement is you can select 2005, six, 50K land use land cover data, 50,000 scale land use land cover data. I want to do it for the Karnataka state. So Karnataka state will be selected. If the user is interested to visualize the data, the user can visualize the data like this or if they want to see the statistics, the statistics button can be clicked and it will show the statewide statistics. If the user is interested to have a district-wise statistics, they can select the district accordingly the district-wise statistics will be generated with the pie chart and all the things will be there. Here you would have noticed that there is an option called web services. Once you are clicking this web service, you'll be able to see the map tile service URL and the web map service URL. So now this URL can be taken and it can be connected from the QJS. So for that two important parameters, one should know it, one is the URL and what is the layer name. When these two things are there, by default in our server side, we have kept the coordinate system as EPSC 4326 or the geographic coordinate system we have kept it so that the data will be streamed in that particular coordinate system to the user. This is the way one can get the web services from Bhuvan. So what are all the different datasets are available here and you slant cover 50,000, 2005, 6, 11, 12 and 15, 16. So three season datasets are available in the 50,000 scale. Then the same way when the user is coming for the land degradation, because one of the things land degradation maps creation also, the datasets are also available readily in Bhuvan. So whatever the map you are creating, you can get the validation from here also. Here you can see that land degradation 2005, 6, the land degradation 2015, 16, two time frame datasets are available here. And here one point we would like to make it very clear that datasets which is the 250,000 scale and above, that data products are available for download. Like the 250,000 scale and above is the land use land cover, the seasonal maps what we have provided here. Here you are the regional map what we have provided here. So you can see that land use land cover map 250,000 scale. Here user can select 2005, 6, 2018, 19, any time frame data they can select it. For example, I want to download 2010, 11 data. So here the seasonal datasets are available, big-wise map, W-wise map and the annual map. All three options are there. I just want to take the annual map for download. Now this time what the user has to do is, here you can see that there is the option called the git data. You have to select the git data and at that time what you have to do, you have to log in with Bhuvan. So you can see that already I have logged into Bhuvan. So when I'm pressing login, it is assigning in because the single sign-on is enabled here. When you are clicking this git data, it will ask you to submit the request. So like for doing this hotspot analysis, if someone wants to do the change reduction with this land use land cover from 2005, 6 to 2018, 19, with the 250,000 scale, what you can do is, you can define your area of interest and you can select all the year. Like I want to do for all the year or I want to do for only a few selected years. You can select it using the control button or you can shift, you can hold it and you can back all the year so that all the year will be selected. Now, this time what we are doing, we are doing this operation for the research studies. Then the selection can be administrative unit based like state or district. Then it can be a bounding box to base whatever the area we want to do it or it can be a AOI based. For example, I just want to do the administrative wise. So like I want to do the change reduction for the entire Orisa state. So once I selected the Orisa, then when you are submitting this particular request what will happen? Immediately the request ID will be generated and one MOU form will be generated. So this MOU form will be filled and the HOD of your organization will be filled signed to this particular thing and once this MOU is received to Booan will be giving you a FTP link and downloading the data. So this is the way the land use land cover 250,000 scale data can be downloaded from Booan for this particular map-a-thon activity. So now to summarize in a simple way, we have two major sites. One is the NRSE OpenEvo Data Archive and that is available and that is accessible from by clicking this Open Data Archive section. When you are going here you will be able to download Avivs, List3, Cartodem like that you will be able to download almost like 60 plus products. All those products can be accessible. The list of products can be accessible from one store their respective pages. And the next section is Booan thematic services. From the Booan thematic services almost like 12 different teams are there. Those team data sets can be accessed OpenEvo special consortium compliance web services like a web map service and web map dial service and that URL and the layer name is already listed on the web services section. And by copying the URL and by defining the layer name you will be able to access in the QGS or any other commercial software. So that way the layer can be accessed from thematic services. Thematic service is also having one download section that download is only applicable to the data which is more than 250,000 scale or coarser than 250,000 scale. So that is nothing but LULC 250K is available and it is available as the annual data and the seasonal data. And the data can be downloaded based on the administrative unit or freehand drawing, AOI or the bounding box. And based on that selection ID, MOU ID will be generated. So you have to fill the MOU with that particular ID. You have to mail it the respective address whatever has been given. So then the approval will be happening and the data download will happen through the Buwan FTP. The automated mail will be sent to the user. So this is the workflow what has to be followed for downloading LULC 250K data from Buwan. Thank you.