Tagged Questions

0
votes
1answer
15 views

UnboundLocalError: local variable referenced before assignment

I have following simple function to get percent values for different cover types from a raster. It gives me following error: UnboundLocalError: local variable 'a' referenced before assignment which ...
2
votes
1answer
55 views

Quick way to make a convex hull

I am using Python and ArcGIS 10.1. Is there a function or very quick way to extract points out of point feature class into an array without looping through a search cursor (as I have millions of ...
2
votes
2answers
85 views

Help with Python and adding a grouplayer to arc, renaming it from a folder name, then adding layers to it from that folder

I am trying to use os.walk to go through a directory tree, pull out all the .shp files in it, create a grouplayer in the mxd, rename the grouplayer the folder name, then add the layers from that ...
1
vote
1answer
48 views

Make Table View with field_info Output

I am using Make Table View to copy data from one table to a table view object and in the process hide and/or rename some fields. When I output the data to a dbf it hides and/or renames the fields ...
0
votes
0answers
72 views

ArcMap runs custom script once and then it crashes on second run

So I made a script that takes data from an MSSQL database and inserts it into a featureclass. I added the script to a toolbox and am able to run the tool from within ArcMap 10.1. The problem is that ...
3
votes
2answers
93 views

Concatenate only when all fields to be concatenated have values

I have two fields that I want to concatenate. Field1 contains null values and Field2 has values for every record. I want to concatenate only when both fields have values. I tried using a function ...
3
votes
1answer
166 views

Import functions in python Add-In logic script

I am running into an error. I have a set of functions which I want to import in the python Add-In script at the time of execution, but when I built Add-In with "import stats" line then tools are ...
2
votes
1answer
57 views

How to declare folder name as global?

I have asked similar question at stackoverflow but posting here as well since it involves ArcGIS and python Add-In. Following code shows first step where i have to declare output folder as global so ...
3
votes
2answers
226 views

Read specific column and row value from a text file using Python [closed]

I have a text file as following: 1.25 177. 1.50 220. 2.00 272. 5.00 427. 10.00 556. 25.00 763. 50.00 916. ...
3
votes
2answers
249 views

How to draw rectangle to clip layers using python addin in ArcGIS 10.1?

I want to clip rasters in data view using interactive rectangle (to define Area of Interest) and add them to current dataframe. Following is a piece of code which is not returning anything. Any ...
0
votes
1answer
177 views

zonal histogram fails to create output table when looping

Using python I'm having problems when trying to attempt a FOR LOOP with the ZonalHistogram function of ArcGIS 10.1. It works fine if I use it only for one image but it gives me this error while for ...