arcgis cellstatistics (range) error

changkx

I want to calculate the range sequence, the Python script as follow：

1. #ndvi_R = CellStatistics(RList, "RANGE", "DATA")the results are 0, but when I run as follows, it's correct. 
2. ndvi_MAX = CellStatistics(RList, "MAXIMUM", "DATA")
   ndvi_MIN = CellStatistics(RList, "MINIMUM", "DATA")
   ndvi_R = ndvi_MAX - ndvi_MIN

DanPatterson_Retired

this weirdness with cell statistics has been reported before

https://community.esri.com/thread/179829

I will look at the rasters, but I suspect it is a nodata issue, an extent issue or similar related environment properties

EDIT

1. I can confirm that the problem remains if the inputs are 32bit tiffs or 32 bit esri grids
2. Your workaround does the the job.
3. I haven't gone to the effort of converting to a lower bit level... that could be a task for someone else.
4. your band 3 is pretty strange... calculate statistics, try viewing without a stretched symbology and have a look at its histogram
5. try scaling the values to integer (ie   Int('band1'*100) ) then determining the range

I would file a case with tech support, especially in light of esri's default grid format being tiffs in recent versions.