Zonal Histogram

Discussion created by jollongksl on Feb 21, 2014
Latest reply on Feb 24, 2014 by xander_bakker
I have some problems using "Zonal Histogram" tool to find how many pixel values fail within each polygons (blue circles as shown in the figure). All polygons are a buffer of same distance, thus the area of the polygons would contain same pixels. So far, my problem is that the sum of pixels I got are not the same which should not be true. Could anyone tell me why? If I'm wrong, what can I use to summarize the number of pixels in this polygon?