nav[aria-label="Primary Navigation"] { padding: 0; & ul { list-style: none; width: 100%; display: flex; flex-direction: row; justify-content: start; align-items: start; gap: 30px; padding: 0; & li { margin: 0; } & ul li { list-style: none; } } }

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!!!

Najděte více příspěvků označených jako

Accepted answers

curtvprice

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

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

All comments

SusanneWagner

Thank you for all help!!!

curtvprice

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

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

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)

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

Připojte se k diskusi

Přihlášení členové mohou přispívat, sledovat aktualizace a další. Jste tu noví? Zaregistrujte si bezplatný účet.

Rychlé odkazy

Community Help
Find useful guides, FAQs, and documents to help you navigate and make the most of Esri Community.