QGIS User0014 - Multi Spectral Imagery
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- Опубликовано: 23 май 2019
- Using QGIS without plugins to manage multi spectral imagery from satellites, airplanes or drones.
In this video I use virtual layers to create true color imagery and the raster calculator to create NDVI images for agriculture.
You can do all this in QGIS without plugins and in many cases the data is also available free of charge.
I've been using scihub.copernicus.eu/ but you can get imagery from a lot of other sources as well. 
Наука
you are a great teacher. Nice job and keep doing this! its awesome!
i am stuck with landsat8 and scp plugin,but your method works great. you are wery generos man.thank ypu and hello from Ukraine
This is my location : Near Montpellier In South of France. The red field in your NDVI are salt marshes or swamp area with some fields. But anyway, thanks for the probative demo.
Tack så mycket
Jättebra lektion
Sir pls make a playlist on different topic so that we can learn from basic function to advanced
Thank you
Thanks for a great tutorial. Just a question for your Symbology tab, where you discussed the importance of having the range going from -1 to +1. This makes sense according to the NDVI value range, but I have tried changin this to extreme off-set levels (-8 to +8). Running af raster statistics analysis shows exactly the same values (mean, range etc). Am I doing something wrong or why is this?
It only influence the visual style. Not analysis values.
Hey, good day! May I asks where can I get the best satellite image of ASIA specially Philippines? can you help me, please? thank you.
The source described in the video does have world coverage.
If you want higher resolution, there's a lot of commercial companies that sell imagery. Try "Planet" for really up to date imagery.
Can you use this method to know soil composition under the top soil such as clay or iron rust.
Short answer, no. You need sensors that "see" the things you want to analyse. However, it might be possible to "infer" properties under ground based on what is found on top.
god job but what is the mothod for drone or airplanes what is the NDVI for that i am not farmer bro