A site-package created by Esri to expose ArcObjects to Python.

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How to perform a table look-up using Python in ArcGIS 10.0?

Using ArcGIS 10.1 the arcpy module has a TableToNumPyArray command, which converts a table into an array. Unfortunately I don't have access to 10.1 on my work PC. Is there a workaround which will ...
7
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2answers
825 views

Process a raster with multiple geoprocessing tools in arcgis 10 using python - flow between processes

I'm writing a short python script that includes processing rasters with different geoprocessing tools in ArcGis 10, for example, the three processes below, is this best way to use multiple tools ...
7
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2answers
483 views

Check validity of file geodatabase using arcpy

AS the title suggests, how can I whether a GDB file is valid using arcpy? One approach is, only checking the whether the name ends with .gdb, but that's not a robust approach. Because a normal file ...
7
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2answers
3k views

Modify raster layer display and symbology properties programmatically with arcpy or ArcObjects

I have over 1500 NITF files that I need to be able to modify the layer display and symbology of programmatically from within ArcMap. I need to set the properties outlined in red below: I've looked ...
7
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3answers
2k views

How to create a circle in arcpy

Suppose I have a dataset where each record has an x,y and r (the centroid and radius of a circle). How can I create a polygon feature class containing parametric circles? Sorry to those who have a ...
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3answers
177 views

How to perform a “mostly within” selection?

I'm looking for a way to determine if a polyline is "mostly within" a polygon. Since mostly within is arbitrary, I would need be able to enter a percentage at its execution. I thought there might ...
7
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2answers
200 views

Unusual results for geoprocessing speed tests

I have been observing unusual performance with a Python geoprocessing script. The (attached) script performs the following actions: Use a search cursor to look up UTM zone corresponding to polygon ...
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2answers
275 views

How to specify unit of measurement when accessing Geometry() object's 'length' attribute?

Using the CalculateField_management tool, one can specify the unit of measurement when calculating shape length: #Calculate polyline lengths in miles polylines = "C:\sampleShape.shp" ...
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Why can't I access a table in a personal geodatabase (.mdb) with arcpy after installing 64-bit geoprocessing?

I wrote and ran a simple script last year - it cycled through some line features, buffered them and then intersected with some other lines - it all worked fine. I'm now trying to tweak the file to ...
7
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1answer
1k views

Guidelines for organizing Python Toolboxes (.pyt) in ArcGIS

For one of my tasks I need to create a Toolbox with three tools (python scripts). Instead of ordinary tbx I've decided to write it as Python Toolbox (pyt). Everything is clear except the "good" way ...
7
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1answer
909 views

concurrent use of in_memory workspace in arcpy

i am using a python script that's eliminating small polygons from a feature class. this script creates temporary feature classes with fixed (hardcoded) names in the "in_memory" workspace. example: ...
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3answers
907 views

How to determine on which side of a line a polygon feature falls?

I have parcel data intersecting line data. In the parcel data there are some parcels that don't intersect the line. How could I programmatically figure out if the non-intersecting parcel is on the ...
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2answers
1k views

Change from layout view to data view using python? (ArcMap 10)

Is there a way to change from layout view to data view using python? I would prefer to do it using arcpy.
7
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1answer
591 views

ArcPy method to determine ArcMap document version

Is there a way with ArcPy to identify the version of a Map Document (MXD). I am working on a solution to inventory our MXD's and would like to know if a document is 8.1, 9.2, 10.0, etc. I am ...
7
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1answer
903 views

Inserting newlines in Rectangle Text elements via ArcPy causes overlap?

I ran across an issue the other day when I tried to use ArcPython's mapping module to edit rectangle text elements with newlines (\n) in an ArcMap document. Here's what the output looked like: ...
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2answers
584 views

Reordering polygon shapefile permanently?

I've written a script which produces a polygon shapefile of the extents of all the thousands of rasters in our library. I want to organise the FID so that the files with the largest extents are on the ...
7
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1answer
165 views

Reduce processing time in Erase function using Arcpy in IDLE

I am processing 18,000 feature classes (saved in a file GDB), each with ~500 records (polygon features) in ocean areas, and I am running a script to remove area overlapping with the coast, using the ...
7
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1answer
3k views

using arcpy outside arcmap

There may be something I'm missing, but is it possible to use the arcpy module outside arcmap? My situation is that we have one license on a computer which is shared over a network. I need to do ...
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4answers
5k views

'Import arcpy' error (RuntimeError: NotInitialized) when using IDLE

ArcGIS Version: ArcGIS 10, Python 2.6.5 Machine: Windows 7 64bit (Intel) I'm receiving the following error when importing arcpy using the the IDLE (gui and cmd prompt) and when using pythonwin. I ...
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2answers
408 views

How can I speed up my arcpy script?

I have written an application that does a lot of geoprocessing using arcpy. Once started, the application itself runs at an acceptable speed, but it is very slow to boot. It can take 30 seconds or so ...
7
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1answer
1k views

Edit End Points in Polyline (Python/ArcMap10)

I am trying to make a polyline endpoint snapping tool in python. using a Search Cursor I read in the values to an array of line objects (which contain the feature id of the line, and two "EndPoint" ...
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2answers
1k views

How to Refresh open attribute table in ArcMap using ArcPy rather than ArcObjects?

I am running the Calculate Field GP tool from the arcpy in ArcMap. When a row value is updated, it does not show up untill I use the Reload Cache tool (Table Options > Reload Cache). How do I refresh ...
7
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1answer
445 views

How to simulate moving vehicles?

I have a point layer (stored in SQL Server 2008) that is being served up by a map service in ArcGIS Server 10.1. I am consuming this service in a web client. Lets say the points are boats out at ...
7
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2answers
220 views

Conflict between ArcPy and GDAL/OGR?

TL;DR I can't get an installation free version of GDAL/OGR to work from within ArcMap 10.0. I get an ImportError: DLL load failed on _mod = imp.load_module('_gdal', fp, pathname, description). ...
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3answers
528 views

How to Receive an Email after a script has run?

I'm working my way through my first attempt at scheduled tasks with modelbuilder and python. So far I have: Created a model that reconciles our SDE versions and then compresses the database. ...
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2answers
174 views

How to access current job id from geoprocessing script running on esri server?

I want to programmatically access the current job id of a geoprocessing script running on ESRI 10.2. The script is what needs to know the job id, not the caller of the script. While searching, I ...
7
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1answer
204 views

Draw middle ordinate perpendicular to chord, out to curve, with arcpy

I've been assigned to find the radius of road curves. My boss found this article describing a pretty straightforward method of doing so: find the start/end points of the curve; create a chord; ...
7
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1answer
2k views

Python-arcpy : How make feature list from gdb and value list from field and use them in gaLayer function?

I'm not an expert in python, however I have to write a script to do geostatistical analyses with the GACreateLayer function from Arcgis. I have several data (>2000) and I want to use list of features ...
7
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1answer
221 views

Efficient Network Neighbors?

I would like to identify the Kth order neighbors of an edge on a network, specifically the neighbors of a large set of streets. For example, I have a street that I'm interested in looking at, call ...
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5answers
506 views

How to programatically identify the “Joined Field” in ArcMap?

Is it possible to programmatically identify the Join Field that is being used to Table Join two datasets together in ArcMap? I am currently using ArcGIS 10.0, SP5 and would prefer an ArcPy solution, ...
7
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3answers
942 views

python.exe has stopped working

A python script was written about 18 months ago by a person who has now left. It produced the required outputs then. I've been asked to run it again but with different (finer resolution) data ...
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4answers
2k 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 ...
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4answers
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Raster to Polygon Scripting Problems

I am trying to make a script which selects every .png file in a folder beginning with the letters "LG". I then want the scipt create a shapefile, replacing the "LG" with "SH", and then i want the ...
6
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2answers
4k views

How does one access a featurelayer in SDE via Python?

I am trying to use Arcpy to run the CopyFeatures_management script so that I can copy a featurelayer in SDE. What do I use for the input (and output, for that matter, since I'll be copying the layer ...
6
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3answers
2k views

Python - formatting path strings and checking if a path exists

I would like to use the following code to determine if a path exists. The path I would like to check is being passed to my code via parameter on a ArcMap 10.0 tool dialog box. The parameters data ...
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3answers
2k views

How can I select vector features that overlay raster in arcpy?

I have two datasets: point feature class and raster (stored in file geodatabase). The spatial extent of the raster is smaller than the point dataset. Is there a way I could select (or create new, ...
6
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2answers
1k views

Creating geodatabase from CSV using python

I have a file with weather data (daily) for multiple weather stations for multiple years. I am looking for some python script to automate the database creation process and its interpolation on a daily ...
6
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2answers
243 views

Python scripting- compute statistics

I'm new to Python but I've heard is a good way to automate tasks. I have thousands of point shapefiles and need to extract the maximum value of each one and put them in a new table. I'll appreciate ...
6
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1answer
2k views

In an arcpy script, how do I convert ArcGIS date value to a string reading in mm/dd/yyyy format?

I am writing an arcpy tool script in ArcGIS 10.0. In a fGDB feature class, I have a Date type field. I gather that the values in the Date field are stored as long integer dates, but they display in ...
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4answers
643 views

How to optimise and speed up Python code? [closed]

Again my lines of surface runoff... I made a script, solving the issue when lines cross other lines. Something like generalization. Like on the picture below. The problem is that I have to solve 30 ...
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5answers
170 views

How to access adjacent rows with cursor?

In the attached screenshot, the attributes contain two field of interest "a" and "b". I want to write a script to access the adjacent rows in order to make some calculations. To access a single row, ...
6
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3answers
1k views

Why is an extra field necessary when creating point shapefile from csv files in Python?

I have a Python script that creates a point shapefile from a csv file within a Python script. This script gives me a ValueError for the longitude field (LON) if there isn't an extra nonsensical field ...
6
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1answer
337 views

Are there any distinct advantages of creating a Python Toolbox over a Custom Toolbox?

I enjoy making different geoprocessing tools to practice Python and to become more familiar with the arcpy modules. I've just been using a Custom Toolbox and then importing the Python script and ...
6
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1answer
1k views

Counting number of points in a point shapefile - ArcGIS 10.0 / arcpy

I assumed this would be an easy thing to do. I'm loading a point shapefile into a map like this: layer = arcpy.mapping.Layer(file_name) Is there a way to get the number of points in the shapefile? ...
6
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2answers
266 views

How to replace a cyrillic symbol in an attribute table using python?

I've tried searching for an answer and I've already seen some similar themes here, but I still haven't been successful in replacing Cyrillic symbols in an attribute table, which is why I'm asking for ...
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2answers
645 views

How to refresh the ArcMap display using ArcPy?

Was trying to replicate a RePast Agent Analyst simulation using just Python and arcpy. The script was about urban expansion. The script just changes the values of a column in a shape file. ArcMap's ...
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3answers
3k views

Writing world file when exporting TIFF using ArcPy Mapping?

According to documentation, the options are: Syntax ExportToTIFF (map_document, out_tiff, {data_frame}, {df_export_width}, {df_export_height}, {resolution}, {world_file}, {color_mode}, ...
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2answers
1k views

Getting XY map coordinates on mouse clicks as input variables into a python script

This is my first time coding in python, so bear with me. I wrote a script to calculate an analytical solution to find the orientation of a plane based on three points. I'm using ArcGIS 10.1. # Input ...
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4answers
2k views

Efficient arcpy method of points in polygon

Coming from a background of Mapinfo and Manifold, I frequently find myself frustrated with the ArcGIS SQL toolset. In both these former programs it is trivial to write a query asking, for instance, ...
6
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1answer
182 views

How to call arcpy.RefreshActiveView() every 5 seconds using ArcGIS Python?

I have an Excel macro that generates random values after every 5 secs and I am reading it in ArcGIS for Desktop... to refresh the view I have to press f5 and the view gets updated. Now I want to ...