topic Re: Conditional evaluation with Con in ArcMap Questions

Conditional evaluation with Con

GJB — Mon, 10 May 2021 19:38:12 GMT

Hello, in ArcGIS 10. used geologic boring logs and the topo to raster tool to create a BedrockElevation raster. However, some bedrock outcrop areas were interpolated to be at an elevation ‘higher’ than the GroundDEM, so I need to adjust these areas to actual ground elevation. What is the best way to accomplish this? It seems easy in concept but I’m having trouble making a formula to work in Raster Calculator. Any insight would be greatly appreciated. Thank you.

Concept: New Raster =

IF: "BedrockElevation" > “groundDEM”

THEN: assign elevation value from "groundDEM"

OTHEWISE: keep the elevation value of "BedrockElevation"

I tried: CON("BedrockElevation" > "GroundDEM", "GroundDEM", "BedrockElevation")

Re: Conditional evaluation with Con

JayantaPoddar — Mon, 10 May 2021 21:04:26 GMT

Functions are case-sensitive. Could you test

Con(("BedrockElevation" > "GroundDEM"), "GroundDEM", "BedrockElevation")

Let us know if you have any further issue?

Re: Conditional evaluation with Con

DanPatterson — Mon, 10 May 2021 22:34:50 GMT

Do you have a screengrab/text result of the actual expression?

Presumably you got an error or an unexpected result. Could you report which and what.

Re: Conditional evaluation with Con

GJB — Tue, 11 May 2021 14:07:24 GMT

Yes! That was it, thank you for the response!

Re: Conditional evaluation with Con

GJB — Tue, 11 May 2021 14:08:54 GMT

Thank you for the response!! It was solved as above.