Hi I would like to ask, can the calculation of NDVI process after doing the supervised classification? And how you process the image that you use for the NDVI process? I’m a beginner and I’m not quite understand
I noticed there are slight differences in the values between the two NDVI methods. From the band maths the min value is -0.59742975 and max value is 0.515567128. From the vegetation radiometric indicies the min value is -0.60189227 and the max value is 0.522966611. Do you know a reason for the differences?
Hello, thanks for the videos, they are really helpful! Using Sentinel-2 Data, I would like to calculate the Urban Index with the formula (B12-B8)/(B12+B8) but it doesn't work. The error message is "Please check the band maths expression you have entered. It is not valid." which I don't have an explanation for.
The radiation is NOT absorbed by the water but reflected. This is called specular reflection. Thus, nothing is reflected back to the sensor and the water appears black as no values can be captured for that area.
For applying atmospheric-, terrain and cirrus correction of Top-Of- Atmosphere Level 1C input data Watch this video for applying Sentinel-2 correction using Sen2cor plugin ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-ZDjY1eJ-9kg.html