http://www.esri.com/news/arcuser/0111/charmsnake.html
ListLayers returns a Python list object containing layer objects. The str
function converts a value (e.g., integer) to a string.
Hi everyone,
I'm trying to adapt the script on this page to return the workspace of
every layer within an ArcGIS MXD… I think the stumbling block I'm up to is
that I have a python list object and from there I'm having problems getting
to the properties of the indivual layers. This is the code I have so far..
very messy in the middle!
import os
import sys
import arcpy
import arcpy.mapping as mapping
# get input parameters
outDir = arcpy.GetParameterAsText(0)
packageMap = arcpy.GetParameter(1)
checkBrokenLayers = arcpy.GetParameter(2)
mxd_path = arcpy.GetParameter(3)
# get the map document in which this code is running ("Current" keyword)
mxd = mapping.MapDocument(mxd_path)
# build a pathname to the output report (text file)
reportPath = outDir + '\\' + 'test.txt'
# open the file (will be created if it doesn't exist)
reportFile = open(reportPath, 'w')
arcpy.AddMessage('Writing report to ' + reportPath)
# start writing report text to a string variable
reportText = 'Title: ' + mxd.title + '\n'
reportText += 'Author: ' + mxd.author + '\n'
reportText += 'Description: ' + mxd.description + '\n'
reportText += '~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~' + '\n'
# if the user chose to do so, create map package
if packageMap:
packagePath = outDir + '\\' + mxd.title.replace('.', '_') + '.mpk'
if (os.path.exists(packagePath)):
arcpy.AddMessage('Map package already exists (' + packagePath + ')')
else:
arcpy.AddMessage('Creating map package (' + packagePath + ')' )
arcpy.PackageMap_management(mxd.filePath, packagePath)
# loop thru all data frames in the map
dataFrames = mapping.ListDataFrames(mxd, '')
for frame in dataFrames:
# report data frame name and spatial reference
reportText += '\nData Frame: ' + frame.name + '\n'
reportText += 'Spatial Reference: ' + frame.spatialReference.name + '\n'
# get all layers in this data frame
# "*" ''
layers = mapping.ListLayers(mxd, '', frame)
i = 0 # layer index position
# loop thru all layers in the data frame
for lyr in layers:
# report index position and name - ' + lyr.longname +
# so a python reference to the layer has been created
#
http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#/Layer/00s300000008000000/
# now need to call it???
# here a list is being returned rather than the layer object itself?
objLayer = arcpy.mapping.Layer(lyr) # i.e get object from layer
reference LYR
reportText += '\tLayer ' + str(i) + ': ' + lyr.name + ':' # +
objLayer.workspace + '\n'
i += 1 # same as i = i + 1
# if the user has requested it, check for layers with a missing data source
if checkBrokenLayers:
arcpy.AddMessage('Checking for missing data sources')
brokenList = mapping.ListBrokenDataSources(mxd)
# report the count of broken layers
reportText += '\nFound ' + str(len(brokenList)) + ' layers with missing
data.'
# loop thru all broken layers in the list
for broken in brokenList:
# report broken layer name
reportText += '\t- ' + broken.name + '\n'
# write the text stored in the reportText variable to the output file
reportFile.write(reportText)
reportFile.close() # close the file
del mxd # delete the mxd object
Any help appreciated! Dan,
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