Reiterating through features

Anna_Anna — Mon, 07 Feb 2022 17:00:04 GMT

I'm trying to reiterate though polygons of a shape file to extract seperate rasters through the function extractionbymask.

This is the code right now but it ends in the error code ER000732: Input Raster does not exist or is not supported. I ran this in the python window and can see that both inputs show up, but the output is empty.

I'm a beginner so I have probably missed something obvious but have been unable to figure out what.

# First import arcpython and set environment

import arcpy
import os
arcpy.env.workspace= "E:\\GIS_Work\\Python"
arcpy.env.overwriteOutput = True
from arcpy.sa import *
from arcpy import env
print("Environment set")

#Define variables

S_M_Map= Raster("SLUMFKKlassad.tif")
Zone = "Split.shp"

print ("Variables defined")

Check out license
arcpy.CheckOutExtension("Spatial")

#Create Iteration #Extract Raster to Polygon
i = 1
with arcpy.da.SearchCursor(Zone, 'Shape@') as cursor:
for row in cursor:
name = "Location"+str(i)
i = i+1
print (name)
outExtractByMask = ExtractByMask(S_M_Map, row)
outExtractByMask.save(name)

Re: Reiterating through features

DanPatterson — Mon, 07 Feb 2022 17:23:29 GMT

Code formatting ... the Community Version - Esri Community

to provide line numbers and proper indentation

The output files should be rasters but I suggest *.tif files

name = "Location"+str(i) +".tif"

and you can use row for the extraction you have to use the file... name

but you need a layer or raster not the shape so you will either have to make a feature layer or do a select by attribute to select on the object id field

Make Feature Layer (Data Management)—ArcGIS Pro | Documentation

not sure what you want to do in that regard

ExtractByMask(S_M_Map, zone)

Extract by Mask (Spatial Analyst)—ArcGIS Pro | Documentation

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Reiterating through features

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