Calculate unique values vs classification statistics?

MårtenKarlson — Thu, 19 Mar 2015 08:29:57 GMT

hi,

i've encountered a weird thing with raster data in Arcmap 10.2. I use the classification statistics dialog box to get information about raster data properties like sum, mean etc (via Table of contents, [right click] properties> symbology...). For instance, i plot the sum of the raster data vs some other parameters and later i do regression analysis in excell..

when i display a raster and enter the classification statistics dialogbox i get some statistics. I work with floating point rasters do i can't do this via an attribute table. BUT, if i let arcmap calcualte unique values before i enter the classification statistics dialog box, i get different (higher) statistics!?

for the analysis, i've decided to let arcmap calculate unique values before i get the statistics i need, but i guess the trend im looking for would have been there anyways..

How can this be possible, and for which purpose does arcmap work like this?

Best,

Mårten, Sweden.

topic Calculate unique values vs classification statistics? in ArcGIS Spatial Analyst Questions

Calculate unique values vs classification statistics?

Re: Calculate unique values vs classification statistics?