Tagged Questions

A python API created by ESRI to perform geoprocessing and layer management.

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4
votes
1answer
441 views

Sorting a table on multiple fields using ArcPy

I'm trying to sort a table based on three fields with ArcPy (which should be only one line of code), and I had a "tool is not license" error. I just saw that sorting with multiple fields as parameters ...
4
votes
3answers
542 views

Questions on smooth lines on soil polygon?

In a couple of weeks I am going to do QA/QC on soil polygons and I'm wonder if there is a way for me to run a script or a tool box that allow me to find the jagged lines ? Alternative, my plan would ...
4
votes
1answer
340 views

How to write code for downloading a file in ArcGIS 10?

I have an offline database which has lat & long coordinates. The functionality I need to provide is to have a (latitude, longitude) point which will have country and city in it. Once the user has ...
4
votes
2answers
470 views

arcgis 10, python update raster of mxd file

i wanted to update the raster file in a mxd file using python. for example, i created a.mxd which contains b.tif file in it. now, i obtained c.tif and want to update the a.mxd, i.e. want to delete ...
4
votes
1answer
238 views

ArcPy or FME for adding history to an object?

I have a very specific problem and I'm looking for a solution for it. I need to add some sort of history to an object. The history will be stored like this: begin_date end_date previous_id Suppose ...
4
votes
1answer
690 views

occasionally empty search cursor looping through a raster list with arcpy

I'm looping through a raster list, to export cell counts (from "Count" field in the table) to a text file, I'm only interested in cases where the field "Value" = 1, so I have included this in my ...
4
votes
1answer
88 views

Using ArcPy to batch merge based on shapefile name?

ArcGIS 10 SP4 Python 2.6.5 I have quite a few shapefiles that are in many different directories. I'd like to pull out groups of like shapefiles, merge them, and move the results into a FGDB. I've ...
4
votes
1answer
131 views

Geographic transformations and arcpy

I have a script that goes through all the rasters in a particular folder and then reprojects it to another coordinate system, using arcpy. My problem is that i keep on getting the following ERROR ...
4
votes
2answers
178 views

Randomly select a record to update using arcpy.da.UpdateCursor

This question is related to my question here. What I would like to do is use a cursor with a where clause to select a number of records. For each row, the values in two fields, TYPE_A and TYPE_B ...
4
votes
1answer
86 views

How to select points within polygon constrained by field?

I've created a polygon from a raster dataset: arcpy.RasterToPolygon_conversion(RasterInt, "C:/arc/poly_int.shp", "NO_SIMPLIFY", "Value") The 'value' field has numbers 1-37, which map to the ID ...
4
votes
1answer
87 views

convert a dbf into a raster image using python? work around for arcpy

ArcGIS' arcpy does not have a function to add a table to a layout. I was thinking that maybe taking that table (e.g. a dbf), there may be some python script command to turn it into a raster (e.g. do ...
4
votes
1answer
92 views

Map automation, create and populate inset maps for densely-labelled areas

I would like to know if it is possible to automate the example in the picture below, unlike the picture below i'm using vector data. I would like for a fixed scale generate map, but when labels are ...
4
votes
1answer
203 views

How to write values from arcpy statistical output to table?

The attached script is my stalled attempt to perform the following workflow: Create a table and create fields Loop through a folder of point shapefiles and perform average nearest neighbor analysis ...
4
votes
1answer
91 views

How to join MySQL data with GIS data using arcpy?

Here is my problem, I have a MySQL database with table in it that has 4 columns: ID, Owner, Address, Legal. And I also have an ArcGIS GDB that has a parcel layer that has in it a PID field. I am ...
4
votes
2answers
188 views

Arcpy's replaceDataSource Error

I've checked the other answers here and none of the answers worked for me... It's a "simple" matter of finding a layer by name in a map and changing it's datasource. Here's my script: #-- New ...
4
votes
2answers
440 views

Why is Layer missing from Export to PDF?

I am using the arcpy module to loop through a number of map features (community areas), zoom to them, title the map with the name of the community area, and export to pdf. The trouble is that while ...
4
votes
2answers
112 views

Keep nonintersecting polygons during clip

I am using ArcMap 10. I have two datasets, one of which consists of many small contiguous polygons, and one which has many small non-contiguous polygons. The first dataset is census blocks, and the ...
4
votes
1answer
339 views

Problem getting the arcpy mapping module to export a layout view map

I'm using the arcpy mapping module to create a series of images and am having trouble exporting a map document to PNG in layout view; I can only get the script to export the data frame view. I've seen ...
4
votes
2answers
229 views

Programmatical Setting of 'Store Relative Pathways' for multiple MXDs ArcGIS 10.1

I am looking to move large number of mxds to a different location on the same drive. Many mxds haven't got 'Store relative pathways' option checked therefore this operation will result in broken links ...
4
votes
1answer
194 views

focal statistics with variable radius

is there an easy way to do focal statistics on a raster, with a variable radius for the neighbourhood to be searched? As in: that search radius would be stored in another raster? i tried something ...
4
votes
1answer
879 views

Lidar - Automated building extraction (Improve Process)

I have the following process for automatically creating building outlines/footprints from Las files and was wondering if anyone can help improve it or has suggestions for other processes to use? ...
4
votes
1answer
148 views

Counting and Storing Event Data Contained Within a Polygon (Using Python)

I have a fairly large project and I would like to automate some tasks using Python. Problem is, I don’t have any experience with Python for ArcGIS. And I rarely use ArcGIS until something big like ...
4
votes
2answers
1k views

How to send long JSON objects (polygon geometry, table rows) in POST request to Geoprocessing Service?

I am seeking to understand my options for sending long JSON objects in a request to a Geoprocessing Service. In particular, I am looking for some example code to illustrate how to include two long ...
4
votes
1answer
2k views

Setting Output Parameter in ArcPy for Server Tool

I have published the following script tool (which is wrapped in a model, i.e. just the script tool and all of its parameters) to ArcGIS Server 10. The GP service succeeds when run, but I cannot ...
4
votes
2answers
151 views

Spawning a process from ArcGIS ToolValidator

I attempted to spawn a separate process from the ArcGIS ToolValidator script. Unfortunately, it launches another instance of ArcCatalog. What is going on behind the scenes that causes ArcCatalog to ...
4
votes
2answers
1k views

Batch conversion of netCDF to Raster in ArcGIS using Python

I'm having trouble using the Dimension Values (Optional) argument in arcpy.MakeNetCDFRasterLayer_md. Whatever I seem to do the output raster is always the first layer which is the default value. ...
4
votes
1answer
869 views

Create overlapping polygons from contour lines

Working in ArcGIS 10, I have a set of contour lines representing density of commercial square footage, and I have a set of points representing local maxima for each peak of the dataset. For each ...
4
votes
1answer
3k views

Thiessen Polygon delineation within a Feature

Greetings! I am trying to create Thiessen (Voronoi) polygons, based on points within a defined shapefile extent. The output should be inclusive to the feature. The output I receive now is the ...
4
votes
1answer
141 views

Is it possible to run an arcpy execute SQL method without connecting to any database or server?

I want to simply process a layer by writing a tool script in a toolbox without having to connect any database, so I think I may have to set up a workspace environment in ArcMap, but I'm not sure if I ...
4
votes
1answer
403 views

Append, Insert or load Data into geodatabase table field

I am attempting to calculate point stationing (footage) along a pipeline at a set interval via python script, thing is I'm just now learning to code in Python, I come from a VBA programming ...
4
votes
1answer
177 views

Controlling time slider using arcpy

I am trying to control the time slider object through my code in the python console. As given in couple of examples, the time property of a data frame could be controlled by Data frame time property. ...
4
votes
1answer
275 views

Solution to automate alignment sheet band-data on map with ArcMap 10.0 and Arcpy

Anyone have some logic or code samples to automate creating band data for alignment/integrity pipeline sheets showing various point/polyline events along the pipe in configurable way or otherwise. ...
4
votes
1answer
189 views

Removing a Table from several MXD-Files using ArcPy

I'm trying to remove a certain Table (xlsx-File) from some MXD-Files using python, but I can't finguring out how. I tried the code sniplet for removing: import arcpy, os from arcpy import env ...
4
votes
1answer
378 views

Can you use arcpy.RasterToNumPyArray() to Graph a Raster with matplotlib?

Can you use arcpy.RasterToNumPyArray() to Graph a Raster with matplotlib? I'm looking to graph a raster with X, Y, and Z values in a 3D bar graph. I just can't seem to translate the numpy array to ...
4
votes
0answers
71 views

Make Graph (Data Management), Changing item names in legend

I'm having python produce a multi-series graph. How do you change the series name in the legend, the default being Vertical Bar, Vertical Bar1, Vertical Bar2.... Thanks for the help ...
4
votes
0answers
94 views

Getting buffer wizard-like speed in Python (vs using MultipleRingBuffer_analysis)

I've got a script that takes a single input polygon feature, throws 10 buffers around it at tenths of a specified input distance, and then symbolises the output based on an existing layer file. ...
4
votes
0answers
228 views

ArcGIS Cost Path Analysis - How Is Arcpy Cost Path Analysis Tool So Much Faster Than ArcObjects

Although I love slinging some python to create geoprocessing scripts/services, I was under the impression that using ArcObjects to do the equivalent operation(s) will have better performance. I've ...
4
votes
0answers
511 views

Multiline VBScript Label Expressions in Arcpy

I am able to set simple label expressions, but when I try to set multiline expressions (which all VBScript expressions are) it does not get copied into the expression box properly. I have tried using ...
3
votes
4answers
971 views

ArcMap 10.0 Python script tool - Have the script tool dialog box stay open past successful completion of script

Is there a way to have the script dialog box have the radio button that says "Close this dialog when completed successfully" unchecked for any user who runs the script tool? Is there configuration ...
3
votes
3answers
135 views

How to convert geometry to WKT using ArcPy?

I would like to be able to convert a single feature (or potentially many features) in an ArcGIS layer into Well Known Text (WKT) format during a geoprocessing operation using Python and ArcPy (no ...
3
votes
4answers
662 views

Arcpy: Calculate new field from user input and existing data

Can't seem to figure out what is wrong with this create fields from a calculation. The code creates the new field in the shapefile as selected by the user but I keep getting a 9999 error on every ...
3
votes
3answers
149 views

How do I sort polygons by their latitude?

We have a set of polygons which we would like to sort and number according to their latitude. This will make it easier for local authorities to relate to the numbers of the objects. I have looked ...
3
votes
1answer
445 views

How do I correctly use 'MultiValue' in Python script parameters?

Good evening My script works fine with a single feature class selected for clip_fc = arcpy.GetParameter(0) . However when I set clip_fc to MultiValue in the script properties and then select several ...
3
votes
4answers
444 views

Renaming a field using arcpy

What I need to do: rename a field name of a table/feature class copy all values to the new field So far I have done following code as artwork21 suggests: EDIT: import sys import traceback import ...
3
votes
2answers
218 views

arcpy.SearchCursor row.var

In arcpy.SearchCursor for row in rows I can return row.fieldname statically, but if fieldname is a variable, I don't know how to return the row.value of that variable dynamically. for example: ...
3
votes
2answers
3k views

Change Symbology of layers from within ArcMap

Cheers, In an active Arc Map session - I want to change the symbology of a layer which is repeated multiple times in the mxd. Can I do this? The basic code I have for getting the layers is below. ...
3
votes
2answers
140 views

Process every 100 records in list

An arcpy merge process is failing due to the size of the datasets and I need to just merge every 100 tiles before it goes on to the next 100 tiles. I wrote the following snippet but it is just ...
3
votes
5answers
1k views

arcpy : Add Raster Layer layer without lyr file

i wonder how i can add a raster layer to a remote (not the current) mxd file with arcpy. I need to not use a lyr file for that. For vector Layer i have the following lines working fine : mxdPath = ...
3
votes
3answers
992 views

How to create a copy of a feature class that is vertically and horizontally offset by a given distance?

I want to duplicate a polygon feature class and offset all of the polygons by about 10 feet in both the x and y directions. Is this possible to do using arcpy, or are there any geoprocessing tools ...
3
votes
3answers
461 views

Copy dbf data into a shapefile in Arcpy

Basically it's to perform a one-to-many join in a python script, from a dbf to a shapefile. I saw (Greg Krakow's method) using QGIS, but I can't use it (I'm working on it, but QGIS is not yet ...

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