daniel roberts

Hi all, Looking for some quick help if possible please I have mosaicked two DEM's in the Amazon region for both 2000 and 2014. When i try to compute a grid difference (2014-2000) i get a strong colour contrast where the scenes merge. Could anybody please suggest how to improve this colour contrast / smooth the image. (please see attached) Kind Regards Dan

Hi, i am new to SAGA: upon trying to create 4 classes after identifying thresholds for vegetation with the NDVI: I have: Water : -0.32 - +0.4 Barron Land: 0.4-0.5 Light Vegetation: 0.5- 0.6 Thick Forest: 0.6-0.73 Using the ifelse command through "grid calculator" could somebody please help me with the formula: i currently have : (ifelse(g1<0.40, 10, 0)) + (ifelse(g1>0.40, 20, 0)) + (ifelse(g1>0.40 , 10, 0)) + (ifelse(g1>0.63, 20, 0) could somebody please tell me where i am going wrong, i understand...