Extracting cells using a categorical raster with raster calculator

[SusanneWagner]

Hello,

I have some problems for a raster query. Can somebody help me please?

I have 2 raster files: parcels with different id (1-7) and landuse also with different ids 1-4).

I want to use the raster calculator for query to create an own raster layer with parcel == 2 and including all kind of landuse (1-4) which exists on those parcels....

But I don't know how to form that query. I tried it with pick and con but without success.....

Thanks in advance!!!

[DanPatterson_Retired]

Use the Combine tool which will produce all the unique combinations which is more useful that doing one query at a time.

http://desktop.arcgis.com/en/desktop/latest/tools/spatial-analyst-toolbox/combine.htm

[GabrielUpchurch1]

In addition to Dan's suggestion (which should do what you need), this map algebra expression applied in Raster Calculator should yield all of the land use cells that overlap with Parcel 2 cells:

Con("Parcels" == 2,"Landuse",SetNull("Parcels","Landuse"))

Alternatively, instead of setting all of the parcel cells not equal to 2 to NoData, you could simply set them to 0.  It just depends on your needs.  Here is that syntax:

Con("Parcels" == 2,"Landuse",0)

[curtvprice · Accepted solution]

If you don't apply a false expression, you get NoData, so this will work:

Con("Parcels" == 2, "Landuse")

[SusanneWagner]

Thank you for all help!!!