Vjylku

I'm new to Python and just created a hard coded script for the process I want, and it works. Right now it calls on the one of three shapefile I have in this map document. I want it to do the same thing, but for each shapefile in this folder. I have no idea how to go about this! I always use ModelBuilder, so I know that is should be an iteration.

Does anyone have any idea how to go about this, or how I am supposed to change this code?

import arcpy



#Declaring Variables  

ID = arcpy.GetParameterAsText(0)  

OutputLocation = arcpy.GetParameterAsText(1)  



mxd = arcpy.mapping.MapDocument(r"C:Usersm3rexkacDesktopRename_TestDOE_auto.mxd")  



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



#Now to Create a Layer Object, the line of code below returns a list of all the layers in the dataframe, with this name.  The [0] returns the first layer with that name instead of the whole list  

Layer = arcpy.mapping.ListLayers(mxd, "Mary_Creek_Co_Parcels", df)[0]    



#This zooms the dataframe to the selected feature  

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

extent = lyr.getExtent()



df.extent = extent

df.scale = scale  





#Exporting map dataframe view to pdf, I have it set up to save  

arcpy.mapping.ExportToPDF(mxd, OutputLocation + "2.pdf", "Page_Layout", 640, 480)  



#Cleaning out memory by deleting the python objects  

del mxd

del df

del Layer  

First, you need to get a list of the shapefiles in the folder to iterate through. I like to use the Python library glob for this as it's pretty fast even when filtering for specific file naming conventions, but arcpy.ListFeatureClasses() or arcpy.da.Walk() would also work (note glob works for file system access and does well with shapefiles, but wouldn't work in a file geodatabase).

Documentation:

• da.Walk()


• glob


• ListFeatureClasses()

An example using glob and os:

shplist = glob.glob(os.path.join(pathtoshapefiles, "*.shp"))

shplist.sort() # glob returns an unsorted list

Esri's example using ListFeatureClasses:

import os

import arcpy



# Set the workspace for ListFeatureClasses

arcpy.env.workspace = "c:/base"



# Use the ListFeatureClasses function to return a list of

#  shapefiles.

featureclasses = arcpy.ListFeatureClasses()

Once you have the list of shapefiles, iterate through them. You will add the new layer, zoom to the desired extent, export the PDF, then remove the new layer. I've assumed based on your responses above that you will be using the same MXD each time, and used your code above as a base. I don't have a big stack of shapefiles to test so it may need some additional tweaking.

ID = arcpy.GetParameterAsText(0)  

OutputLocation = arcpy.GetParameterAsText(1)  



mxd = arcpy.mapping.MapDocument(r"C:Usersm3rexkacDesktopRename_TestDOE_auto.mxd")  



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



for shppath in shplist:

    # create a new layer

    newlayer = arcpy.mapping.Layer(shppath)

    # Add the new layer to the MXD

    arcpy.mapping.AddLayer(df, newlayer,"BOTTOM")



    #This zooms the dataframe to the selected feature  

    lyr = arcpy.mapping.ListLayers(mxd,"Mary_Creek_Co_Parcels", df)[0] # May need to change this line to reflec the correct layer name.

    extent = lyr.getExtent()



    df.extent = extent

    df.scale = scale  



    #Exporting map dataframe view to pdf

    mxd.save() 

    arcpy.mapping.ExportToPDF(mxd, OutputLocation + "_" + str(n) + ".pdf", "Page_Layout", 640, 480)  

    arcpy.mapping.RemoveLayer(df, lyr)

del mxd