topic Re: Removing ZM From Geometry Column Polygon Using ArcPy? in Python Questions

Removing ZM From Geometry Column Polygon Using ArcPy?

BruceGreen — Sat, 11 Dec 2021 13:09:12 GMT

sing ArcGIS 10.2 for Desktop, I have some Shapefiles which I have no idea why their Geometry column (shape) contain ZM! now I need to remove all those ZM and get a clean polygon instead.

I thought I can use the FeatureClassToShapefile_conversion() but not sure how to disabled both Output has Z Values and Output has M Values through following ArcPy

# Import system modules 
import arcpy from arcpy import env  
# Set environment settings env.workspace = "C:/data"  
# Set local variables 
inFeature = ["climate.shp"] outLocation = "C:/output" 
arcpy.FeatureClassToShapefile_conversion(inFeatures, outLocation)

Re: Removing ZM From Geometry Column Polygon Using ArcPy?

NeilAyres — Sat, 11 Dec 2021 13:09:15 GMT

Your input "climate.shp" is a shapefile not a feature class (a dataset inside a geodatabase).

I would recommend that you actually get all of your data into geodatabases first.

Use arcpy.FeatureClassToFeatureClass_conversion or arcpy.CopyFeatures_management to copy the input to the output and disable Z & M geometries using the flags available in environment settings:

See here :

ArcGIS Help (10.2, 10.2.1, and 10.2.2)

So your code might look like this :

import arcpy
from arcpy import env
env.workspace = "c:/Data/AGeodatabase.gdb"
inFeature = "climate"
outFeature = "climate2"
env.outputZFlag = "Disabled"
env.outputMFlag = "Disabled"
arcpy.FeatureClassToFeatureClass_conversion(inFeature, outFeature)

Re: Removing ZM From Geometry Column Polygon Using ArcPy?

BruceGreen — Thu, 20 Aug 2015 11:05:29 GMT

Thanks Neil but I have every thing in `.shp` and not `gdb` format. In that case how I can set the env workspace?

Re: Removing ZM From Geometry Column Polygon Using ArcPy?

BruceGreen — Thu, 20 Aug 2015 11:16:17 GMT

I mean In case of having the original file in directory "C:\\GIS\\ROR" and if I want to save the output in "D:\\Data\\Final\\" Do I have to set two env.workspace for both input and out puts?

Re: Removing ZM From Geometry Column Polygon Using ArcPy?

BruceGreen — Thu, 20 Aug 2015 11:37:24 GMT

I tried both this methods

import arcpy
from arcpy import env
env.workspace = "E:\\GIS\\Data"
inFeature = "band-tailed_pigeon.shp"
outFeature = "E:\\GIS\\Data\\band-tailed_pigeon-NOZM.shp"
env.outputZFlag = "Disabled"
env.outputMFlag = "Disabled"
arcpy.FeatureClassToFeatureClass_conversion(inFeature, outFeature)

import arcpy
from arcpy import env
env.workspace = "E:\\GIS\\Data"
inFeature = "band-tailed_pigeon.shp"
outFeature = "band-tailed_pigeon-NOZM.shp"
env.outputZFlag = "Disabled"
env.outputMFlag = "Disabled"
arcpy.FeatureClassToFeatureClass_conversion(inFeature, outFeature)

but I am getting this error in both case

FeatureClassToFeatureClass C:\Program Files (x86)\ArcGIS\Desktop10.2\arcpy\arcpy\conversion.py 1675
ExecuteError: Failed to execute. Parameters are not valid.
ERROR 000732: Output Location: Dataset E:\GIS\Data\band-tailed_pigeon-NOZM.shp does not exist or is not supported
ERROR 000735: Output Feature Class: Value is required
Failed to execute (FeatureClassToFeatureClass).

Can you please let me know what I am doing wrong?

Re: Removing ZM From Geometry Column Polygon Using ArcPy?

RebeccaStrauch__GISP — Sat, 11 Dec 2021 13:09:17 GMT

Re: your code above, the following will work to copy the shape, but not sure if it will do anything for your original question about removing the Z and M. You can use FeatureClassToShapefile of the FeatureClassToFeatureClass, but I remove the dashes and replaced with _ for the output of the FC2FC version.

import arcpy
from arcpy import env
theWorkspace = r"D:\Data\Final"
env.workspace = theWorkspace
env.overwriteOutput
inFeature = r"c:\GIS\ROR\"band-tailed_pigeon.shp"
outFeature = "band_tailed_pigeon_NOZM.shp"

#either of the next two will work to copy to new location...
#not sure if it will do anything for you ZM question
#arcpy.FeatureClassToShapefile_conversion(inFeature, theWorkspace)
arcpy.FeatureClassToFeatureClass_conversion(inFeature, theWorkspace, outFeature)

Re: Removing ZM From Geometry Column Polygon Using ArcPy?

ThomasEmge — Sat, 11 Dec 2021 13:09:20 GMT

Your parameters for arcpy.FeatureClassToFeatureClass are incorrect. Your are providing two parameters but you need at least three. Please take a look at

http://desktop.arcgis.com/en/desktop/latest/tools/conversion-toolbox/feature-class-to-feature-class.htm

This will work:

import arcpy
from arcpy import env
env.workspace = "E:\\GIS\\Data"
inFeature = "band-tailed_pigeon.shp"
outFeature = "band-tailed_pigeon-NOZM.shp"
env.outputZFlag = "DISABLED"
env.outputMFlag = "DISABLED"
arcpy.FeatureClassToFeatureClass_conversion(inFeature, env.workspace, outFeature)

or as an alternative you can use arcpy.CopyFeatures_management.