


i have already calculated mean max and min value of ndvi but i want to calculate polygone(zone) wise NDVI >.5(%) and also same in clouds.

  1. NDVI value of 1 is a valid (if unlikely) case, you might consider another value to assign as denoting 'cloud'
  2. If you are looking for zonal statistics then you could select those Cloud and NDVI>.5 and run them separately for your study area.
  3. You may also be able to select the min and max from a clipped image using the raster attribute table.

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