Видео

Checkout my latest video

Open QGIS and press Ctrl+Alt+T

It reclassifies a raster band by assigning new class values based on the ranges specified in a fixed table. That is a comparison rules for the classification: the expression "min <= value < max" means that the value is greater than or equal to the minimum value (min) and strictly less than the maximum value (max). In other words, it falls within the range defined by min (inclusive) and max (exclusive).

You can find dem data of anywhere in GEE

Sure

There are two methods to terrain analysis in GEE, 1st method: // A digital elevation model. // use NASA, USGS/SRTM, or ASTER dem product// var dem = ee.Image('NASA/NASADEM_HGT/001').select('elevation'); // Calculate slope. Units are degrees, range is [0,90). var slope = ee.Terrain.slope(dem); // Calculate aspect. Units are degrees where 0=N, 90=E, 180=S, 270=W. var aspect = ee.Terrain.aspect(dem); // Display slope and aspect layers on the map. Map.setCenter(-123.457, 47.815, 11); Map.addLayer(slope, {min: 0, max: 89.99}, 'Slope'); Map.addLayer(aspect, {min: 0, max: 359.99}, 'Aspect'); 2nd direct method: // Use the ee.Terrain.products function to calculate slope, aspect, and // hillshade simultaneously. The output bands are appended to the input image. // Hillshade is calculated based on illumination azimuth=270, elevation=45. var terrain = ee.Terrain.products(dem); print('ee.Terrain.products bands', terrain.bandNames()); Map.addLayer(terrain.select('hillshade'), {min: 0, max: 255}, 'Hillshade'); //obtain and display ‘slope’, ‘aspect’ same as Hillshade. To export the terrain data to google drive: // A digital elevation model. var dem = ee.Image('NASA/NASADEM_HGT/001').select('elevation'); var terrain = ee.Terrain.products(dem); // Define the region of interest as a geometry. // var roi = // Export the terrain data to Google Drive. Export.image.toDrive({ image: terrain, description: 'terrain_data', scale: 90, // Adjust the scale to your needs. region: roi, folder: 'your_export_folder', // Specify your export folder. maxPixels: 1e13 // You may need to adjust this value based on your image. });

@@KapildevAdhikari thank you very much 🙏🏻🙏🏻🙏🏻🙏🏻

DM at kapildevadk@gmail.com

NZURI SANA

Do you notice that there are values starting from 0 and ending with 9 @console.

@@KapildevAdhikari It starts from 0 to 8, but after I changed the scale to 50 (randomly) I got all the 10 classes. Could you explain the reason?

@@babitamalakar829 it may depend on study area (geometry) size.

@@KapildevAdhikari ok. Can you help me to get the legend displayed? I am not able to do it

@@babitamalakar829 simply provide me your script.

Ok

Please provide me with your email if you don’t mind. I have a few questions and i think you might be able to help me.

@@boi_ratie kapildevadk@gmail.com

By system, you have to categorize from symbology

ruclips.net/video/KyjNhAvQS2s/видео.html

Yes, just try it.

I am also looking for similar functionality, have you figured out anything?

Pro tip : you can watch series at Flixzone. I've been using them for watching loads of movies these days.

@Pedro James Definitely, been using flixzone for months myself :D

@Pedro James Yup, I've been watching on Flixzone for years myself =)

@Pedro James Yup, I've been using Flixzone for since december myself :)

@Pedro James Yup, have been watching on Flixzone for months myself :)

Dinh Nhan Ngo Sure

@@KapildevAdhikari thank you, Can you leave an email for me to contact you?

Wesley Carvalho see in the video description

Jean Randri yes, it’s for Qgis 2.18

you will have to polygonise

can you find it? I need it too.

Wait for few months to use this tool in qgis 3.x version

Divide / Split polygon into equal parts or equal area polygons in QGIS 3.x ruclips.net/video/M0dzHhjZJuQ/видео.html