QGIS/C2/Downloading-GIS-Datasets/English-timed

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Time Narration
00:01 Welcome to this tutorial on Downloading GIS Datasets.
00:06 In this tutorial, we will learn
00:09 About GIS
00:11 Download vector dataset from Natural Earth Data website.
00:16 View vector data in QGIS.
00:20 Download raster dataset from Bhuvan website, and
00:25 View raster data in QGIS.
00:29 To record this tutorial, I am using
00:33 Ubuntu Linux OS version 16.04
00:38 QGIS version 2.18
00:42 Mozilla Firefox browser version 54.0 and
00:47 A working Internet connection
00:50 To follow this tutorial, knowledge about GIS is desired, but not essential.
00:58 For more information about GIS, please visit the given link.
01:03 All the datasets required for this tutorial are available in Code files link.
01:10 About GIS

GIS stands for Geographic Information System.

01:17 It is a system for capturing, storing, querying, analyzing and displaying geospatial data.
01:26 Spatial Data is of two types, Vector Data and Raster Data.
01:33 Let us download vector dataset from Internet.
01:37 Open any web browser.
01:40 In the address bar, type www.naturalearthdata.com

Press Enter.

01:49 Natural Earth data website opens.
01:53 Click on Downloads link.
01:56 Downloads page opens.

Scroll down the page.

02:02 You can see three different scales of dataset.

Large, Medium and Small.

02:12 Let us download a dataset for demonstration.
02:16 Under Large scale data, click on Cultural button.
02:21 A webpage opens.

Scroll down the page.

02:27 Here, we can see various available datasets.
02:32 Let us download the country administration boundary files.
02:37 Under heading Admin zero hyphen Countries, click on Download countries button.
02:45 A dialog-box opens, which prompts you to save the file.

Select Save file option.

02:53 Click on OK button.
02:56 The process of download begins.
02:59 On my system, zip file downloads to the Downloads folder.
03:05 Extract the contents of the zip file.

Right-click and select Extract Here option.

03:14 Double-click on the extracted folder.
03:18 Here we see many files with different file extensions.
03:23 This is a vector type of dataset.
03:26 About Vector data.
03:29 Discrete features such as wells, roads and land-use types is Vector Data.
03:36 Vector data can be of point, line or polygon format.
03:41 Let us open QGISand view one of the downloaded files.
03:47 Here, I have already opened QGIS interface.
03:52 Click on, Layer menu on the menu bar.
03:56 From the menu options, select Add Layer.
04:00 From the sub-menu, click on Add Vector Layer option.
04:05 Add Vector Layer dialog-box opens.
04:09 Select File as Source type, Systemas Encoding.
04:16 Under Source heading, click on Browse button.
04:20 Navigate to the admin countries folder downloaded from the Natural Earth data website.
04:27 From the contents of the folder, select the file with .shp extension.

Click on Open button.

04:37 In the Add vector layer dialog-box, click on Open button.

A world map opens on the canvas.

04:46 Save the map.
04:48 Click on Project in the menu bar.
04:52 Scroll down, click on Save button.
04:57 In the dialog-box, name the file as Map hyphen 1.
05:03 I will save it on the Desktop.
05:06 Click on Save button.
05:09 The map will be saved as Map hyphen 1 dot qgs on the Desktop.
05:16 About Raster Data.
05:19 Continuous features that exist spatially between observations is Raster Data.
05:26 Raster data is made up of cells in row and column format.
05:32 Let us download raster dataset from Bhuvan website.
05:37 Bhuvan Platform was created by ISRO.
05:41 The website hosts various data collected by Indian remote sensing satellites.
05:48 Here is the link to download raster dataset from Bhuvan website.
05:54 Open the Bhuvan website link in any web browser.
05:59 Open Data Archive page opens.
06:03 On the left panel under Select Category, select Satellite/Sensor option.
06:10 Under Select Subcategory drop down, choose Resourcesat-1: LISS-III option.
06:18 Scroll down, under Select Area, choose Bounding Box .
06:25 Here, we have to enter the latitude and longitude of the location.
06:31 Let us download data for Mumbai region.
06:35 Use google maps to find the latitude and longitude of a particular region.
06:41 For Mumbai region, enter the following data.
06:45 Minimum Longitude 72.75
06:50 Maximum Longitude 73
06:54 Minimum Latitude 19
06:58 Maximum Latitude 19.25
07:02 Click on Select button.
07:05 A tile over Mumbai will be highlighted.
07:09 Click on Next button at the bottom of the page.

A list of available Tiles opens.

07:17 Select the most recent imagery by looking into the Date of Pass column.
07:23 24 December 15 is the most recent out of the available datasets.
07:30 Click on the check box on this row under Selection for backlog.

Click on Download button on this row.

07:39 Bhuvan will prompt you to login.

Click on OK button.

07:45 A dialog-box opens.
07:48 If it is your first time in using Bhuvan, click on New User link at the bottom of the page to create a new account.
07:57 Account and Profile Information page opens.
08:02 Fill the appropriate details as shown.

Click on Submit button.

08:09 You will receive an email from the Bhuvan team with Login Id and Password.
08:15 I have already completed the registration process.

So I will click on Click here to login link.

08:24 I will enter Username and Password and click on Login button.
08:31 Again, in the tiles panel for 24Dec15 row, click on the Download button.
08:38 Download of the zip file begins.
08:43 A dialog-box opens, which prompts you to save the file.
08:48 Select Save File option and click on OK button.
08:53 The zip file will be saved to the Downloads folder.
08:57 Extract the contents of the zip file.
09:01 Double click on the extacted folder.
09:05 This folder has raster dataset for Mumbai region.
09:10 Let us now open a file in QGIS.

Open a new window.

09:17 Click on New icon at the top-left corner on the tool bar.
09:22 Click on Layer on the menu bar.
09:25 From the menu options, select Add Layer.
09:29 From the sub-menu, click on Add Raster Layer option.
09:34 A dialog-box opens.
09:37 Navigate to the folder we had downloaded from Bhuvan website.
09:42 Select the file 24December15 hyphen BAND2 dot tif

Click on Open button.

09:51 On QGIS canvas, you will see the raster map of Mumbai region.
09:58 Let's summarize.
10:00 In this tutorial we have learnt,

About GIS

10:05 Downloaded vector data from Natural Earth Data website
10:10 Viewed the vector dataset in QGIS.
10:14 Downloaded raster data from Bhuvan website
10:18 Viewed the raster dataset in QGIS.
10:22 For the assignment-

From Natural Earth Data website, download Medium Scale, Physical data for Rivers and Lakes

10:32 Another popular website to download GIS data is Openstreetmap data website.
10:39 Explore Openstreetmap data website
10:43 The video at the following link summarizes the Spoken Tutorial project.

Please download and watch it.

10:51 The Spoken Tutorial Project team conducts workshops and gives certificates.

For more details, please write to us.

11:01 Do you have questions in THIS Spoken Tutorial?

Please visit this site.

11:08 Choose the minute and second where you have the question.

Explain your question briefly.

11:16 Someone from our team will answer them.
11:20 Spoken Tutorial Project is funded by NMEICT, MHRD, Government of India.

More information on this mission is available at this link.

11:32 This tutorial is contributed by Prajwal M. from Sahyadri College of Engineering and Snehalatha from IIT Bombay.

Thank you for joining.

Contributors and Content Editors

PoojaMoolya