topic Re: A little help with some python code please. in Python Questions

A little help with some python code please.

TonyAlmeida — Wed, 09 May 2012 19:27:24 GMT

I have tried run this script but i get the following error,
<type 'exceptions.IndexError'>: list index out of range
Failed to execute (Script).

I would like to enter a Parcel number and have it select and zoom to that parcel. I would like to make a script tool out of this.
ACCTEXT is the filed i am searching in are are follows. P12345, P12346, P98745 etc..
TAXPARCELS is they layer i am searching in.

import arcpy arcpy.AddMessage("Starting") pu = arcpy.GetParameterAsText(0) arcpy.AddMessage(pu) mxd = arcpy.mapping.MapDocument("CURRENT") df = arcpy.mapping.ListDataFrames(mxd, "Main Map")[0] lyr = arcpy.mapping.ListLayers(mxd, "TAXPARCELS", df)[0] arcpy.AddMessage(lyr.name) expression = "ACCTEXT = '"+p+"'" arcpy.AddMessage(expression) arcpy.SelectLayerByAttribute_management(lyr,"NEW_SELECTION",expression) df.extent = lyr.getSelectedExtent() df.scale = df.scale*1.1 for elm in arcpy.mapping.ListLayoutElements(mxd, "TEXT_ELEMENT", "P"):     if elm.name == "P":         elm.text = (p) arcpy.SelectLayerByAttribute_management(lyr,"CLEAR_SELECTION") arcpy.RefreshActiveView() arcpy.AddMessage("Completed")

Re: A little help with some python code please.

DarrenWiens2 — Wed, 09 May 2012 19:41:12 GMT

expression = "ACCTEXT = '"+p+"'"

This probably isn't the problem, but is the above 'p' supposed to be 'pu'? I assume the problem is either there is no data frame called "Main Map" or there is no layer called "TAXPARCELS". Which line is throwing the error?

Re: A little help with some python code please.

MathewCoyle — Wed, 09 May 2012 20:25:31 GMT

Hey Tony, sorry forgot about getting back to you. You can do something like this.

import arcpy  arcpy.AddMessage("Starting")  acc_val = arcpy.GetParameterAsText(0) arcpy.AddMessage(acc_val) df_name = "Main Map" lyr_name = "TAXPARCELS" field_name = "ACCTEXT"  mxd = arcpy.mapping.MapDocument("CURRENT") df = arcpy.mapping.ListDataFrames(mxd, df_name)[0] lyr = arcpy.mapping.ListLayers(mxd, lyr_name, df)[0] arcpy.AddMessage(lyr.name)  datasource = lyr.workspacePath field_delim = arcpy.AddFieldDelimiters(datasource,field_name) expression = "{0} = '{1}'".format(field_name,acc_val) arcpy.AddMessage(expression)  arcpy.SelectLayerByAttribute_management(lyr,"NEW_SELECTION",expression) df.extent = lyr.getSelectedExtent() df.scale = df.scale*1.1  for elm in arcpy.mapping.ListLayoutElements(mxd, "TEXT_ELEMENT", "P"):     if elm.name == "P":         elm.text = (acc_val) arcpy.SelectLayerByAttribute_management(lyr,"CLEAR_SELECTION") arcpy.RefreshActiveView()  arcpy.AddMessage("Completed")

Re: A little help with some python code please.

TonyAlmeida — Wed, 09 May 2012 20:45:43 GMT

dkwiens you were right my data frame was "Layers".

mzcoyle thank you very much for that code.
I changed the
df_name = "Main Map"
to
df_name = "Layers"

and it zoomed to it.

My next questions how do you get to highlight they feature you searched for.

Re: A little help with some python code please.

MathewCoyle — Wed, 09 May 2012 20:48:42 GMT

dkwiens you were right my data frame was "Layers".

mzcoyle thank you very much for that code.
I changed the
df_name = "Main Map"
to
df_name = "Layers"

and it zoomed to it.

My next questions how do you get to highlight they feature you searched for.

Highlighting is cleared at the end, remove this line to retain highlighting.

arcpy.SelectLayerByAttribute_management(lyr,"CLEAR_SELECTION")

Re: A little help with some python code please.

TonyAlmeida — Wed, 09 May 2012 21:26:34 GMT

Thank you!