 Let me introduce myself. I am Dr. Krishnadas. I am a faculty in the PG department of Geography Prajapati School of Guwahati. So, today we shall learn about the unit 5 and unit 6 of your SSC course that is Open Data Sources and Software for Zoonformatics and number unit 6 is Applications of Zoonformatics. So, one by one we will proceed. First we will try to learn about the unit 5. Then after that we will proceed to the unit 6. I think these two are the last units SPIO syllabus. So, before going to the main content or before going to the content of the course, let us simply try to visualize what is the GIS or this particular Zoonformatics. I think you have already learned it, but even though. Okay, so what is GIS? Let us just watch and observe then we will proceed. GIS stands for Geographic Information System. Using computer hardware software and a ton of raw data, we can explore the fundamental principle of geography. That location is important in people's lives. Using GIS, we can view, understand, question, visualize and interpret data in visual ways that will be the relationships and patterns which allows us to make better decisions. For example, a meteorologist might study the paths of hurricanes to predict where and when they might occur in the future. A city planner can choose the best location for a nuke marker hospital, ensuring that they are built in the place for their need of the most. GIS is essential to understanding what has happened, what is happening and what will happen in geographic space. Geographic understanding brings wisdom and with wisdom, we can make better decisions to create a brighter future. So in that particular video, simply or briefly what we have understood, we have understood that particular new technology that is GIS or now we popularly call it as Geoinformatics. So Geoinformatics is a broader term. So GIS is now a part of that, but earlier when it was developed, this particular Geoinformatics developed, it was earlier developed as a technology or platform that is GIS. Now under Geoinformatics, different new or related disciplines have brought new technology ideas to this particular branch. So that is why now broadly we call it Geoinformatics. So Geoinformatics, I think you know, it is a multidisciplinary science and like we have nanoinformatics, we have nanoscience, we have say bioinformatics. Now one of the emerging discipline technological field in the world that is Geoinformatics. So usually if we see in Geoinformatics, then we have basically these are the elements or component of that particular subject. So I have explained here, you see GIS is a part of Geoinformatics. So it is a broad umbrella. Under that we have GIS, we have GNSS. I think what is GNSS? You have understood in last class, I think one of these are taught you about Geoinformatics. What is remote sensing? What is GIS? GNSS is an aerial photography. It is similar to remote sensing. Then cartography, it is a traditional science dealing with math. Then we have computer science that we are doing everything here using computer. Then we have another Geodesic. Geodesic means when we are going to measure about the safe size of the art, then it is directly related to one traditional science that is known as Geodesic. So it means if we combine all these particulars of disciplines, then we will get a broad umbrella of science or technology that is known as Geoinformatics, got it? So now with relation to our unified that is open data and software. So before going into that, we should understand what is this particular popular term, F-O-S-S or popularly we call it FOS. So FOS means free open source software. Nowadays in computer science or in technological domain, this is one particular paradigm shift or I would say a revolutionary sense in the development of any type of especially the ICT technology. So now this particular force of free and open source software like the other discipline in Geoinformatics also, we are utilizing the approach of this FOS, free and open source software. So this idea of FOS means free and open source. By this particular word free and open, a basic idea that we get is that it means we should not purchase it, we will get it freely. And open means open for all anyone having the basic knowledge of ICT or computer, they can access this particular technology. That is why FOS, free and open source. Again although in technological field we use this particular force term synonymously, but there is a slight difference between free source software or data and open source software or data. So what is the difference? Let me bring one different example. So all of we are using WhatsApp nowadays for communicating is noted. So WhatsApp is free, it is not free, we don't pay for WhatsApp, it is not free. WhatsApp is free, but we have similar messaging applications. That is, have you heard the name signal? So signal is also free, but open source. But WhatsApp is free, but not an open source application. So what is the basic difference? All open source software or data are free, but all free data or free software may not be open source. That is the difference. So in this case in GIS also we have free software and data as well as free and open source software and data. So I think in your syllabus you have encountered two words about Googleite. Now we are going to see what is Googleite. So Googleite is a free software that is provided by being provided by Google. That is a free software, but the Googleite is not an open source software. We can freely use it, but not open source. What is open source? I am coming to that part. Then quantum GIS or QGIS, very popular GIS software we are going to learn. That is open source at the same time it is free also. So if I correctly wish to use this term force then only QGIS is a force software. Then there are different data which are force data as well as open data. I am coming to that. But what is an open source? Free you have understood. Open source means say when we are developing any type of software or application we have certain algorithms or say code to develop that particular application. So open source means if anyone can access the source code of that particular software or data other than the developer then that is open source. But if the source code of the software or data are not available to everyone other than the developer then that is only a free software. So similarly we have in geoinformatics field of geoinformatics now most popular approach is this free and open source data and software. Why? Because if we are going to purchase a paid data or commercial data commercial data means now we are talking about GIS data remote sensing data then we have to pay lakhs of rupees thousands of rupees. But if we just going to search for sources of free and open source data 0 no payment we can directly access it we can utilize it in our study and research. So what is the advantage? So open data open source data what are the basic advantages? So these advantages I have mentioned but simply so you can also think it yourself. So what are the advantages? First advantage is zero fee okay zero fee and second most important advantage is wider coverage. Since it does not search any rupee or any money from the users then it automatically its coverage is wider anyone from the world can able to access especially which are the user group especially the students group or learner group or students or learner researchers especially from the developing or underdeveloped countries because it is very they you see the commercial software or a commercial open data they have very high cost say millions of rupees if you going to purchase a particular scene of remote sensing data but free source data you can able to download from for any part of the world from any location of the earth surface using this internet and computer technology. So cost is zero wider coverage than flexibility. Flexibility means say for example now for say doing a research on a particular wetland you are utilizing another free data set of say for example provided by NASA. If you are finding some difficulty for certain post processing application or analysis you can also go for Indian free data sets. So you have the flexibility then another advantage is that updation since open source software free source software are being utilized by different users around the world. So we will get frequent updates okay like say for example our mobile operating system say android it is also free and open source. So frequent update we get after say one year we get another version it means since wider utilization of that particular free and open data are there so we get frequent updation. Say updation means what we updated data if there was any kind of error it is get corrected in the next update okay. So these are the advantages now coming to the say we have understood which are the data it means free and open source data in zone informatics means we are mainly concerned with the remote sensing data data collected by remote sensing satellite and the data which are processed by different user or advanced user or expert for utilization of other type of semi users or say other type of users like GIS data okay remote sensing and GIS data are the data free and open source data that we are considering in this particular course okay. So we have understood what is open source data free source data but from when we will get it or which are the open source data in your course content you will see you have open source data like lenset data sentinel data okay free and open source data then we have IRS data IRS means Indian remote sensing data we have many data sets but from where we will get it okay then freely we will get it but from which are the sources so as per your course content so again these are the four common sources from where we can able to download or access these type of open data open data means open remote sensing data okay so first source is art explorer dot us gs it means this particular data providing platform is being operated by NASA and United States Geological Survey okay this is America then next website is Bhuban that is directly operated by our NRSC and ISRO NRSC means National Remote Sensing Center under Indian Space Research Organization then third one is very popular platform Google art okay in mobile also you can install Google art application then fourth one is open topography again say in this particular art explorer platform you can able to download and access remote sensing data plus three-dimensional data that is there in your syllabus like SRTM SR is not it then in Bhuban platform you can able to download Indian math data in simple language it means the data that which are collected by Indian remote sensing satellite and processed and provided by our ISRO NRSC you can freely collect again remote sensing data plus three-dimensional remote sensing data okay you have examples in your course then in the third website so this is a platform it is at the same time from this platform you can able to collect remote sensing visual products plus you can also utilize the platform as a free GIS platform we will see then the last portal is or last website is the open topography so here in this particular photo as a particular web portal it is directly related to three-dimensional data like SRTM data global topography data different type of open data or open source data which are available freely okay for all users around the world so now we will quickly look one by one okay so this is the portal art explorer dot USGS from this particular portal you can able to download different type of open data including commercial data throughout the world okay that portal is given in your course content so in this particular portal so let us just show you so let us move to our own area that is India's Guwahati so I wish to want open satellite data for this my city okay for that how we will do that first I will open this particular portal then after opening the portal I will move to my area then after that I will just put one point point means the location is you see let it and now get it used even here it means now the server will explore only the available data related to that particular location then after that what I will do I will go to the data sets after putting the location I will go to the data set you see below data set under data set you see we have different list of data set few issue data also you can able to collect from this portal but it is mainly for the NASA satellite data so one data in your I think particular syllabus you have that is length set data I think in your syllabus it is there no length set data that is a open data length set means it is being operated by NASA okay so let us see which are the available data so length set data I have selected then after that I will just click result then after few minutes it will bring the available length set data which are covering on that particular location and in and around area okay again it is coming so let me again explain one thing in this particular website or the other website that I am going to show to access all type of free and open data you must have one account free account okay in that website you just go to sign up then you just put your email id or say password then for browsing no account is required but for downloading data you require one free account for usgs for buban for open topography these type of data data source so you see we have got one image so say let us look at that particular image so you see this is the particular satellite data length set data covering this entire area okay at the same time it is difficult for a satellite to collect entire wall at the same time or stress so that is why it collects the data sequence really okay so this is the data to get more information about data we will click over there then you see we will get the related data information okay in this way you see so where a date of acquisition of the data then when we download the data when we process the data we will get the data in this form false color composite form or two color composite form in GIS platform so this is one platform another platform is okay this is another platform buban open data platform this particular platform is being operated by issue okay from here also using one account you can able to collect and download all type of ISD free data available so under here this is our country so so from here we should select the satellite sensor say let us select the satellite sensor resource at least free data that is I think in your course material then after that after selecting the satellite data all these satellite data which are being provided by this particular platform are provided using rectangular or square tile okay so let us collect the data set for this particular area so for that I will go to tiles okay after selecting the tile you will get a button next after that you can able to get the links for downloading that particular scene from this particular data portal okay so it is coming now so click start select the tile then after that click next now you see so all the temporal data of that particular area which you can able to directly download this from this portal freely then these are available here see right from 2018 I think 2019 or 21 we will get let us see see from 2008 to 2019 all the data available which the data that are collected by the IS satellite you can able to download from this platform freely only you require one free account okay then quickly we will move to the next portal Google Earth before Google Earth let us show you this open topography portal this open topography portal is directly related to 3d data 3d data means the data from which we can able to visualize length breadth as well as elevation or height of the ground surface or earth surface so this is another data another portal open topography from here also using your email id or their account you can able to collect these type of available data okay one here also you will get you see SRTM data that is in your syllabus NASA digital elevation model Arctic Dam European Union DTM so different type of free and open source three-dimensional data you can able to collect from this particular website that is open Google receives internet is little bit slow so we will go for the next particular website that is Google Earth that is the particular link these Google Earth website at the same time it provides free and open data as well as you can also utilize the platform as a free GIS platform okay so in that particular website you can able to learn what Google Earth platform is and you can also able to download different versions of Google Earth for computer for your tablet for your mobile phone okay so the different versions so so when you install your Google Earth in your PC you will see like that it means entire art model in three-dimension from that Google Earth how you can generate open data say for example I will move to one particular area okay since internet is little bit slow so any area you can visualize a very high special resolution in your book I think there is a content called special resolution so you can visualize each and every record special record present on the surface of the earth at very high resolution other than that you can also able to create different type of road data line linear point data polygon data you can able to collect and generate using this platform other than that if so here also you can visualize the surface of the earth in three-dimensional let us see in because of the internet it is not coming proper from this platform also you can visualize the surface of the earth like any part of the earth in three-dimensional so after that we will move to the next part that is now we have what we have discussed so far we have discussed about open and free source data but that data after collection of that particular data where we will process the data that means we must process the data using a computer software but which type of software in Geometrics we must use we must use GIS software again like we have like free and open data we have free and open source software in free and open source software you can able to process and work with commercial GIS data or remote sensing data as well as open source and free remote sensing data there is no limitation so we have different free and open source software and most popular one is quantum GIS or QGS now it is the most popular quantum GIS it means free and open source GIS software okay so this particular organization it provides updated version at the interval of around two or three months very popular then another open source free and open source GIS software is SAGA SAGA GIS it is free and open source we have hundreds of software nowadays in the market but I have only brought these three particular software then another way is illwish software illwish means integrated land and water information system these three popular GIS software are free and open source at the same time but most popular one is the quantum GIS then if we look at their website in this particular free and open source QGS so another advantage is that you can able to download it for any type of operating system okay like if you are using a Linux operating system you can work with quantum GIS if you are using a Macintosh operating system of Apple then you can use QGS if you are using Windows PC you can use QGS now if you are using your tablet or Android also you can somehow able to work with quantum GIS so that is the advantage so once you install the software you will get the particular graphical user interface like this so this is what quantum GIS software is okay in this software here you can work with the map here these are the different tools it means which you can cartographically or statistically work and process with the remote sensing or any type of GIS data okay so okay this is their website okay you see a free and open source GIS that is their website this is quantum GIS organization and you see these are the latest software two software releases one is long term release another is latest release so now version is you see 3.34.1 then if just you go to download page from here you can able to download the quantum GIS for different operating system you see from macOS for linux then you can install and work with it okay that is the best free and open source software so till here what we have understood we have briefly understood about what is a force then which are the open source data widely available for the users around the world being provided by different organization we have also say observe the data sets which are being provided by our ISRO or indian satellites then we have also observed the software like quantum GIS the popular one which we can utilize as a free and open source software to work with any type of GIS or remote sensing data