PoojaMoolya: Created page with " {|border=1 ||'''Time''' ||'''Narration''' |- ||00:01 || Welcome to this tutorial on '''Downloading GIS Datasets'''. |- ||00:06 || In this tutorial, we will learn |- ||00:..."

2020-09-15T05:26:02Z

Created page with " {|border=1 ||'''Time''' ||'''Narration''' |- ||00:01 || Welcome to this tutorial on '''Downloading GIS Datasets'''. |- ||00:06 || In this tutorial, we will learn |- ||00:..."

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{|border=1
||'''Time'''
||'''Narration'''

|-
||00:01
|| Welcome to this tutorial on '''Downloading GIS Datasets'''.

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||00:06
|| In this tutorial, we will learn

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||00:09
|| About '''GIS'''

|-
||00:11
|| Download '''vector dataset''' from '''Natural Earth Data''' website.

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||00:16
|| View '''vector data''' in '''QGIS'''.

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||00:20
|| Download '''raster dataset''' from '''Bhuvan''' website, and

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||00:25
|| View '''raster data''' in '''QGIS'''.

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||00:29
|| To record this tutorial, I am using

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||00:33
|| '''Ubuntu Linux''' OS version 16.04

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||00:38
|| '''QGIS''' version 2.18

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||00:42
|| '''Mozilla Firefox''' browser version 54.0 and

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||00:47
|| A working '''Internet''' connection

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||00:50
|| To follow this tutorial, knowledge about '''GIS''' is desired, but not essential.

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||00:58
|| For more information about '''GIS''', please visit the given link.

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||01:03
|| All the '''datasets''' required for this tutorial are available in '''Code files''' link.

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||01:10
|| About '''GIS'''

'''GIS''' stands for '''Geographic Information System.'''

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||01:17
|| It is a system for capturing, storing, querying, analyzing and displaying '''geospatial data'''.

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||01:26
|| '''Spatial Data''' is of two types, '''Vector Data '''and''' Raster Data'''.

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||01:33
|| Let us download '''vector dataset''' from '''Internet'''.

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||01:37
|| Open any web browser.

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||01:40
|| In the '''address bar''', type www.naturalearthdata.com

Press '''Enter'''.

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||01:49
|| '''Natural Earth data''' website opens.

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||01:53
|| Click on '''Downloads''' link.

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||01:56
|| '''Downloads''' page opens.

Scroll down the page.

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

'''Large, Medium''' and '''Small'''.

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||02:12
|| Let us download a '''dataset''' for demonstration.

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||02:16
|| Under '''Large scale data''', click on '''Cultural''' button.

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||02:21
|| A webpage opens.

Scroll down the page.

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||02:27
|| Here, we can see various available '''datasets'''.

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||02:32
|| Let us download the '''country administration boundary files'''.

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||02:37
|| Under heading''' Admin zero hyphen Countries,''' click on''' Download countries''' button.

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||02:45
|| A dialog-box opens, which prompts you to save the file.

Select '''Save''' file option.

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||02:53
|| Click on '''OK''' button.

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||02:56
|| The process of download begins.

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||02:59
|| On my system, '''zip file''' downloads to the '''Downloads''' folder.

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||03:05
|| Extract the contents of the '''zip file'''.

Right-click and select '''Extract Here''' option.

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||03:14
|| Double-click on the extracted folder.

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||03:18
|| Here we see many files with different file extensions.

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||03:23
|| This is a '''vector type''' of '''dataset'''.

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||03:26
|| About '''Vector data'''.

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||03:29
|| Discrete features such as wells, roads and land-use types is '''Vector Data.'''

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||03:36
|| '''Vector data''' can be of point, line or polygon format.

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||03:41
|| Let us open '''QGIS'''and view one of the downloaded files.

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||03:47
|| Here, I have already opened '''QGIS''' interface.

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||03:52
|| Click on, ''' Layer menu''' on the '''menu bar'''.

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||03:56
|| From the '''menu''' options, select '''Add Layer.'''

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||04:00
|| From the '''sub-menu''', click on '''Add Vector Layer''' option.

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||04:05
|| '''Add Vector Layer''' dialog-box opens.

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||04:09
|| Select '''File''' as '''Source type''', '''System'''as '''Encoding'''.

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||04:16
|| Under '''Source''' heading, click on '''Browse''' button.

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||04:20
|| Navigate to the '''admin countries''' folder downloaded from the '''Natural Earth data''' website.

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||04:27
|| From the contents of the folder, select the file with '''.shp''' extension.

Click on '''Open''' button.

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

A world map opens on the '''canvas'''.

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||04:46
|| Save the map.

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||04:48
|| Click on '''Project''' in the '''menu bar'''.

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||04:52
|| Scroll down, click on '''Save''' button.

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||04:57
|| In the dialog-box, name the file as '''Map hyphen 1'''.

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||05:03
|| I will save it on the '''Desktop'''.

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||05:06
|| Click on '''Save''' button.

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||05:09
|| The map will be saved as '''Map hyphen 1 dot qgs''' on the '''Desktop'''.

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||05:16
|| About '''Raster Data'''.

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||05:19
|| Continuous features that exist spatially between observations is '''Raster Data'''.

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||05:26
|| '''Raster data''' is made up of cells in row and column format.

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||05:32
|| Let us download '''raster dataset''' from '''Bhuvan''' website.

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||05:37
|| '''Bhuvan Platform''' was created by '''ISRO'''.

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||05:41
|| The website hosts various data collected by Indian '''remote sensing''' satellites.

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||05:48
|| Here is the link to download '''raster dataset''' from '''Bhuvan''' website.

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||05:54
|| Open the '''Bhuvan''' website link in any web browser.

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||05:59
|| '''Open Data Archive''' page opens.

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||06:03
|| On the left panel under '''Select Category''', select '''Satellite/Sensor''' option.

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||06:10
|| Under '''Select Subcategory''' drop down, choose '''Resourcesat-1: LISS-III '''option.

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||06:18
|| Scroll down, under '''Select Area''', choose '''Bounding Box''' .

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||06:25
|| Here, we have to enter the latitude and longitude of the location.

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||06:31
|| Let us download '''data''' for '''Mumbai''' region.

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||06:35
|| Use '''google maps''' to find the latitude and longitude of a particular region.

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||06:41
|| For '''Mumbai''' region, enter the following '''data'''.

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||06:45
|| '''Minimum Longitude 72.75'''

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||06:50
|| '''Maximum Longitude 73'''

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||06:54
|| '''Minimum Latitude 19'''

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||06:58
|| '''Maximum Latitude 19.25'''

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||07:02
|| Click on '''Select '''button.

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||07:05
|| A '''tile''' over '''Mumbai''' will be highlighted.

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||07:09
|| Click on '''Next''' button at the bottom of the page.

A list of available '''Tiles''' opens.

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||07:17
|| Select the most recent imagery by looking into the '''Date of Pass column'''.

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||07:23
|| '''24 December 15''' is the most recent out of the available '''datasets'''.

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||07:30
|| Click on the check box on this row under '''Selection for backlog.'''

Click on '''Download''' button on this row.

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||07:39
|| '''Bhuvan''' will prompt you to '''login'''.

Click on '''OK''' button.

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||07:45
|| A dialog-box opens.

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||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'''.

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||07:57
|| '''Account and Profile Information''' page opens.

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||08:02
|| Fill the appropriate details as shown.

Click on '''Submit''' button.

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||08:09
|| You will receive an email from the '''Bhuvan''' team with '''Login Id''' and '''Password'''.

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||08:15
|| I have already completed the registration process.

So I will click on '''Click here to login''' link.

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||08:24
|| I will enter '''Username''' and '''Password''' and click on '''Login''' button.

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||08:31
|| Again, in the '''tiles panel''' for '''24Dec15 row''', click on the '''Download''' button.

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||08:38
|| Download of the '''zip file''' begins.

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||08:43
|| A dialog-box opens, which prompts you to save the file.

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||08:48
|| Select '''Save File''' option and click on '''OK''' button.

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||08:53
|| The '''zip file''' will be saved to the '''Downloads''' folder.

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||08:57
|| Extract the contents of the zip file.

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||09:01
|| Double click on the extacted folder.

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||09:05
|| This folder has '''raster dataset''' for '''Mumbai''' region.

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||09:10
|| Let us now open a file in '''QGIS'''.

Open a new window.

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||09:17
|| Click on '''New icon''' at the top-left corner on the '''tool bar'''.

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||09:22
|| Click on''' Layer''' on the '''menu bar'''.

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||09:25
|| From the '''menu''' options, select '''Add Layer.'''

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||09:29
|| From the '''sub-menu,''' click on '''Add Raster Layer option.'''

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||09:34
|| A dialog-box opens.

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||09:37
|| Navigate to the folder we had downloaded from '''Bhuvan''' website.

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||09:42
|| Select the file '''24December15 hyphen BAND2 dot tif'''

Click on '''Open''' button.

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||09:51
|| On '''QGIS canvas''', you will see the '''raster''' map of '''Mumbai''' region.

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||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

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||10:18
|| Viewed the '''raster dataset''' in '''QGIS'''.

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||10:22
|| For the assignment-

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

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||10:32
|| Another popular website to download '''GIS data''' is '''Openstreetmap data''' website.

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||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.

|}

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

PoojaMoolya: Created page with " {|border=1 ||'''Time''' ||'''Narration''' |- ||00:01 || Welcome to this tutorial on '''Downloading GIS Datasets'''. |- ||00:06 || In this tutorial, we will learn |- ||00:..."