Geographic Information Systems Asked on April 13, 2021
I’m having trouble creating a looping function that looks through a geodatabase, clips each feature class to a "study_area" polygon, and puts the clipped files in a separate geodatabase. I keep getting "Could not clip feature classes". The features can all be clipped individually but trying to run this loop doesn’t work.
What am I missing here?
I tried to search for similar questions but only found answers regarding raster clips. Code below.
from arcpy import env
# setting my source and target geodatabase
SourceWorkspace = r"E:UFD Commercial CorridorRoosevelt.gdb"
TargetWorkspace = r"E:UFD Commercial CorridorClipped.gdb"
#setting my clip feature (which is a polygon)
clipfeature = r"E:UFD Commercial CorridorClip area.gdbstudy_area"
env.workspace = SourceWorkspace
try:
fclist = arcpy.ListFeatureClasses()
for fc in fcList:
outClipFeatureClass = targetWorkspace + "//Studyarea_" + fc
arcpy.Clip_analysis(fc,clipfeature,outClipFeatureClass)
except:
arcpy.AddError("Could not clip feature classes")
print ("could not clip feature classes")
print arcpy.GetMessages()
I see two problems:
you are defining TargetWorkspace
though you are calling targetWorkspace
. Python is case-sensitive.
You need to properly join together strings to create paths. I highly recommend becoming familiar with os.path.join()
. For example
Instead of:
outClipFeatureClass = targetWorkspace + "//Studyarea_" + fc
Use:
outClipFeatureClass = os.path.join(TargetWorkspace, "Studyarea_" + fc)
import arcpy
import os
# setting my source and target geodatabase
SourceWorkspace = r"E:UFD Commercial CorridorRoosevelt.gdb"
TargetWorkspace = r"E:UFD Commercial CorridorClipped.gdb"
#setting my clip feature (which is a polygon)
clipfeature = r"E:UFD Commercial CorridorClip area.gdbstudy_area"
env.workspace = SourceWorkspace
fclist = arcpy.ListFeatureClasses()
for fc in fcList:
outClipFeatureClass = os.path.join(TargetWorkspace, "Studyarea_" + fc)
arcpy.Clip_analysis(fc,clipfeature,outClipFeatureClass)
Correct answer by Aaron on April 13, 2021
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