topic Raster Overlay Analysis: Scale Value in ArcGIS Spatial Analyst Questions

Raster Overlay Analysis: Scale Value

CraigEissler — Thu, 04 Dec 2014 02:49:33 GMT

In the Overlay Analysis tool, do you need to set a Scale Value to a Field Value to Rasters already Reclassified?

And what about the Evaluation Scale; If I've already Reclassified the Rasters to a Common Scale, why do I need to set this?

Thanks!

Re: Raster Overlay Analysis: Scale Value

DanPatterson_Retired — Thu, 04 Dec 2014 07:23:49 GMT

Are you in this toolset? and following this workflow?

Re: Raster Overlay Analysis: Scale Value

CraigEissler — Thu, 04 Dec 2014 15:34:03 GMT

Yes, sorry, I'm in the Weighted Overlay tool.

It's not clear to me how I relate my already Reclassified Input Rasters (on a scale of 1 to 10) to the Weighted Overlay tool's 'Scale Value' and 'Evaluation Scale'..?

Thanks.

Re: Raster Overlay Analysis: Scale Value

CraigEissler — Sat, 06 Dec 2014 18:39:36 GMT

Hello, anybody?

Re: Raster Overlay Analysis: Scale Value

DanPatterson_Retired — Sat, 06 Dec 2014 22:04:38 GMT

From the link I sent you, step 4 has been completed by you. Your remaining task appears to decide on how to weight your input variables so that they total 100%. Is this what you are needing help with?

Re: Raster Overlay Analysis: Scale Value

CraigEissler — Sat, 06 Dec 2014 22:51:29 GMT

The Weighted Overlay tool contains more Input sections than the weights, themselves. My Question is about the 'Scale Value' and 'Evaluation Scale' inputs and how I relate and use them with my reclassified data. ...That's ok, I'll figure it out -- thanks anyway

Re: Raster Overlay Analysis: Scale Value

DanPatterson_Retired — Sat, 06 Dec 2014 23:28:29 GMT

ok..they are explainednin the "how weighted overlay works" section in the tool's help

Re: Raster Overlay Analysis: Scale Value

CraigEissler — Sun, 07 Dec 2014 00:58:15 GMT

I know -- thanks. I'm saying I don't understand it