What I do without iteration is the following:
1-Change radiance to reflectance for band 3 with raster calculator
2-Samething as #1 on band 4 (the values in the formula are different from #1)
3-Calculate NDVI with band 3_ref and band 4_ref with raster calculator
4-Extract by mask with a polygon (the site of interest)
5-get the mean and the std of the final raster
6-Put in manually in a table with the attributes: #scene, mean, std
I am looking for a faster way to analyse over 75 scenes. I tried with iterate raster on #4 but it seem to not work on other tasks. The difficulty is that I have to change the input values in the formula for every scene for #1 and 2 than input both output in a formula in #3. Then for #5 and #6 I do it manually. Maybe I can do it with create statistics table? I am not sure How to create a template.dbf?
Thanks!
أكثر...
1-Change radiance to reflectance for band 3 with raster calculator
2-Samething as #1 on band 4 (the values in the formula are different from #1)
3-Calculate NDVI with band 3_ref and band 4_ref with raster calculator
4-Extract by mask with a polygon (the site of interest)
5-get the mean and the std of the final raster
6-Put in manually in a table with the attributes: #scene, mean, std
I am looking for a faster way to analyse over 75 scenes. I tried with iterate raster on #4 but it seem to not work on other tasks. The difficulty is that I have to change the input values in the formula for every scene for #1 and 2 than input both output in a formula in #3. Then for #5 and #6 I do it manually. Maybe I can do it with create statistics table? I am not sure How to create a template.dbf?
Thanks!
أكثر...