topic Re: Zoom to layer in Python Questions

Zoom to layer

Yaron_YosefCohen — Thu, 18 Sep 2014 07:21:52 GMT

I have a problem with the getExtent function on arcpy

I try to focus on layers that start with letters "ra" and then sets the scale of 50000. i try to use asterisk (*) but the code does not work

import arcpy, os, sys

from arcpy import env

env.workspace = r"C:\Project"

for mxdname in arcpy.ListFiles("*.mxd"):

print mxdname

mxd = arcpy.mapping.MapDocument(r"C:\Project\\" + mxdname)

df = arcpy.mapping.ListDataFrames(mxd, "Layers")[0]

lyr = arcpy.mapping.ListLayers(mxd, "*ra", df)[0]

ext = lyr.getExtent()

df.extent = ext

print 'getExtent'

df.scale = 50000

print 'scale'

mxd.save()

del mxd

Any help will be appreciated.

Re: Zoom to layer

DanPatterson_Retired — Thu, 18 Sep 2014 09:58:31 GMT

starts with would be "ra*" you have ends with "*ra" see the listlayers menu example

Re: Zoom to layer

Yaron_YosefCohen — Thu, 18 Sep 2014 10:18:14 GMT

it don't work.

import arcpy, os, sys

from arcpy import env

env.workspace = r"C:\Project"

for mxdname in arcpy.ListFiles("*.mxd"):

print mxdname

mxd = arcpy.mapping.MapDocument(r"C:\Project\\" + mxdname)

df = arcpy.mapping.ListDataFrames(mxd, "Layers")[0]

lyr = arcpy.mapping.ListLayers(mxd, "r*", df)[0]

ext = lyr.getExtent()

df.extent = ext

print 'getExtent'

mxd.save()

del mxd

Re: Zoom to layer

DanPatterson_Retired — Thu, 18 Sep 2014 10:30:32 GMT

Then the question is...did you get an error messages? What do you want listlayers within the for loop? it will return a list object and you can't get the extent of a list only individual layers.

Re: Zoom to layer

Yaron_YosefCohen — Thu, 18 Sep 2014 10:45:12 GMT

i want arcpy zoom to 2 lyr then get scale of 50k