topic Re: Problem adding large number of 1-bit rasters in Data Management Questions

Problem adding large number of 1-bit rasters

ChristopherStrother — Tue, 11 Sep 2012 13:07:42 GMT

I have >9000 binary rasters that I've created. I want to add them all together to arrive at a frequency of events for each cell. I've tried using Model Builder and the Iterator to run Cell Statistics. I've also tried Greater Than Frequency. The process completes without error, but each time the result is a raster with all 0 values (not NoData). I've tinkered around with some Python scripts as well to no avail. Anyone have any ideas? I am suspicious of the 1 bit data in the original rasters as the culprit.

Re: Problem adding large number of 1-bit rasters

JamesKelly2 — Mon, 27 Oct 2014 19:33:56 GMT

Hey Christopher,

Did you ever resolve this issue? I am running into the same issue now and was wondering if you could add any insight. I suspect it has something to do with the NoData setting, but I am not sure how to correct it.

Thanks!

Re: Problem adding large number of 1-bit rasters

DanPatterson_Retired — Mon, 27 Oct 2014 20:39:27 GMT

For the Cell statistics tool there is the optional parameter

ignore_nodata

(Optional)

Denotes whether NoData values are ignored by the statistic calculation.

DATA — Only cells that have data values will be used in determining the statistic value.If a NoData value exists at a certain location, the NoData value will be ignored. Only cells that have data values will be used in determining the output.
NODATA — All input cells at each location, including those with a value of NoData, will be used in determining the statistic.