I was wondering if anyone knows what exactly zonal statistics sum does if all my input value raster have the same values.
For e.g. Lets say I have a finer resolution raster with 10 pixel each having the value of 10. I also have another coarser raster so that it perfectly overlaps the finer raster. I use the coarser raster as a zone to calculate the sum of all the 10 grids using zonal statistic sum. The resultant raster should have a value of 100 if I run the zonal statistics sum. But instead it has a value of 10.
I do not understand. Is it something that I am doing wrong or is it that unique values are required to do a zonal statistics sum?