How to download DEM in QGIS - SRTM Downloader Plugin # Lesson 8 (Part 2) of 29 # QGIS Tutorial.

[Music] [Music] [Music] hi welcome to this qgis tutorial lesson 8 part 2. the previous video which is part 1 we learned how to download dm data using the open topography today we are going to learn how to use the srtm downloader which is a huge plugin download data for any part of the world that you need so let's get started we'll open our qgis and start a new project so we have a blank project here the first thing we do is we're going to bring some data in so below here the coordinates i'm going to type well with more letter sorry filed and it will bring the wild shape file so the next thing i want to do is i want to install some plugins so i'm going to go to plugin manage and install plugins let's bring all the plugins that are available in qgis so i'll go to all then under the search and search for the srsr pm downloader you can see i have the srtm downloader here and it tells me download srtm files for nasa server so i'm going to install this plugin and you can see it has these are the number of downloaded tasks so i'm going to install them plug in and it takes quite a very short time to install and now the plugin has been installed successfully so that's one way of installing the srtm downloader another way that you can actually install srtm downloader is through a zip file so i can just open my browser in this case i'm going to use google chrome and then i'm going to look for the srtm downloader plugin then i'll select the srtm downloader plugin for qgis and then you can see the srtm downloader is this here so we're going to look at the details the author of the plugin and then the version what is the current version that you're going to download you can see there is a current version that was actually uploaded on in july 2020 at 4 50 a.m so it's the 3.16 and just select that first one there actually others that you can actually use then you can see information about it but you just want to download it i'm going to click on download and you can see i already downloaded so just say okay then i'll download it inside my plugins plugin folder where i have all my plugins in the js folder so i'll download it here you can see already i already have it here so i don't need to download it again so i'm just going to cancel but if you don't have it and actually just download it again then we'll go to our qgis after the download we finish the download go to plug it manage and install plugins then first i will uninstall this plugin i had already installed it so you want to install it in a different way so i'm going to install it from you can see the plugin uninstalled successfully so i want to install it again so i'll come under the plugin manager i'll come install from zip then i'll come and select where the plugin is and you can see they have these the srtm plugin is actually the folder that i put on my plugins it should be a zip file so i'm going to click on open i'm going to click on install it just take a few minutes and you'll see it said plugin installed successfully when i go to install plugins i have the srtm downloader it is it installed so next we want to search for where we want to download our dm data so i think i'll go to maybe say [Music] let me just label my my features here so that i know which country i want to select em from i'll just use the name click on apply buffer here okay okay and you can see i have jamaica here so i'm going to just select jamaica i'm going to select america so i want the dem of jamaica how do i get the dm of jamaica using the srtm downloader i'm going to go to the plugins you can see you have the srtm downloader here so i'm going to select the srtm downloader and it will tell me that you can actually put the coordinates of what you want the most not the most south the most west and the most is but i just set it from and what's the extent i just take this canvas accent when you're talking about the canvas except it means you just take the data that is just within this canvas and which means it will cover the whole of jamaica so i'm just going to select set converse extent and it will select for me you can see i selected for me the canvas extent then i just click on download i can actually save it here if i want i can save it in a folder so i can just look for a folder where i'm going to save it i think i'm going to save it to the js folder data and i'm going to call it under raster data i'm just going to say new folder here and then i'm going to say jamaica dem right and i'm going to just select that folder and i'm going to use that jamaica dm as my folder so i'm going to now click on download i think it has tell me that six images in progress then it was just downloading now if it prompts you this then it means you haven't actually got an app and an account with there as data so what you do is you can just click on on that link up there and since you're a new user just take a few minutes come up you can put a username and see already you have my username right you can put a username a password then confirm your password and also always be reading the information that is is in this side then the first name the last name these ones that are actually in redstone at the most the ones that are actually required so you can write your first name your last name your email address your country affiliations if you're a government for the education you can just select education doesn't really matter then the study study area you can just select whichever area you are in then you can say yes i'm interested in this data then i acknowledge yeah just you say you're not a robot i'm not a robot then you click on register so once you register you'll get a confirmation of registration in your email address so we can go back here and i can put my username and i use that's my new my username and i just put my password which is that then i can save the credentials if i want to just be logging in every time then i click on ok and you can see now it's oh sorry i think i put the wrong password okay that's the right password now and it will continue downloading your data you can see it's downloading my data here i'm going to leave it to them you can see it has downloaded all my data or jamaica so i'm just going to click on close so it has told me that download this computer say okay now this is my dm data of jamaica if i uncheck you can see it is in tiles so if you want to use this data for the whole of jamaica you can just go to now we want to do what you want to do is you want to merge all these data so that it's when it it shows up shows up as one data not as different as you can see if i uncheck here these are different tiles so what i will do is i will merge all these and how do you imagine qgis you come to rasta then you go to miscellaneous then you click on match because you want to match rasters so you select match and it will ask you what do you want to merge i'll just click on this here the input and i'll select all of them because i want to match all of them then i will click on run mark them and it will start managing them and now you can see i have one file here called match i said mad finished so i'm going to close this then i'm just going to remove all the other files all the other files oh sorry i'm not remove that much actually i'll pull the match up then i just remove all the other files i remain with my magic file and this is the dm of jamaica a temporary layer so i can just change some of the properties here i'm going to and and i want to change the symbology so that you can actually see this layer much better so it's currently up the color gradient is up black and white so what i will do is i want to change the rendering type to single bands you know color then i'll use a color i can decide to use this color but i want to actually use it the color ramp of topography so i'm just going to click on this drop down arrow here and i'm going to create a new calendar and i'm going to select instead of gradient i'm going to select the catalog cptcd and i say okay that will bring me all the presets from color ramps and what i'm dealing you can see there's all the coloramps there's pathe there's the blue the discord the greens the red grays the qg's the precipitation is going to deliver preservation data but i'm dealing with topography so i mean select topography then there is one default for elevation so i'm going to select that elevation i'm just going to say okay and then i'm going to leave my classes to 5 and then i'm going to click on classify then i'm going to click on apply okay and you can see i have actually classified that and now you can see the higher areas which are above two thousand two hundred and thirty two meters are the darker regions so when i zoom in you can actually there are these are the darker areas and then the lower areas are the ones that are in light blue which is the ocean is the ocean so that's how you download dem data for any region in the world using there the srtm downloader if you found this video useful and you want to learn more on qgis subscribe to my channel hit the bell icon so that you can get a notification when i upload the next lesson otherwise i'm just happy you're here see you in the next lesson [Music] you

Channel: WiseGIS

Views: 1,451

Keywords: movavi, movavi video editor plus, qgis, qgis 3.14, gis, opensourcesoftware, opendata, srtm downloader, FOSS, qgis3, qgis tutorial, pi, vector data, raster data, how to download DEM, training, education, diy, ai, gis application, open source, mapping, data visualization, big data, remote sensing, usgs earth explorer, srtm, raster, plug ins, qgis plugins

Id: XXbLtuOWM5s

Length: 13min 54sec (834 seconds)

Published: Thu Aug 13 2020