A python API created by ESRI to perform geoprocessing and layer management.
8
votes
2answers
263 views
Generate near table for x number of neighbours using arcpy
There are 3 likely scenerios that I am trying to capture near distances for:
An interchange subway station, which has 2 or more neighboring stations. That is, the station in question connects 2 or ...
8
votes
2answers
240 views
Create a summary table of the symbology of all datasets in multiple mxd's
This is related to the following Retain ESRI symbology in Mapinfo TAB . As an initial step (in arcpy) I want to access the symbology of all the datasets and create a document which has the details of ...
8
votes
2answers
221 views
How to determine storage type (ST_Geom/Oracle) from arcpy/python
We're migrating some feature classes from SDELOB (or some older binary format) to ST_Geometry. As we write our arcpy script to use the ESRI Migrate Storage Tool we'd like to test whether or not ...
8
votes
1answer
593 views
arcpy.geometry __geo_interface__ and AsShape() function: loss of precision and holes
I'm serializing my arcpy geometries as geojson so that I can 'hydrate' them back as geometries later and I'm having 2 problems in the cycle.:
PROBLEM 1: Precision
R0 = ...
7
votes
4answers
3k views
How to remove a feature layer in an ArcPy Script
So, I have an arcpy based script where I'm trying to intersect two layers where one layer must have its centroid in the other layer. Since I need to know that one layer (feature_layer below) includes ...
7
votes
3answers
860 views
What is the proper syntax and usage for ArcGIS “in_memory” workspace?
I am unclear how best to use the in_memory workspace in ArcGIS. The best resource I have found on the subject is from ESRI on Using in-memory workspace. Unfortunately, the help section is not very ...
7
votes
1answer
878 views
How to find the mid-point of a line in arcpy
How can the mid-point of a polyline be calculated using the geoprocessing framework, eg in a Python script?
The polyline.centroid property returns The true centroid if it is within or on the feature; ...
7
votes
2answers
172 views
How to create a solar intensity map for a garden plot?
I'm interested in creating a raster surface that depicts the average solar intensity per unit area for a small garden plot. I imagine the inputs into the model would be the following:
Plot ...
7
votes
1answer
452 views
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
votes
4answers
380 views
python.multiprocessing and “FATAL ERROR (INFADI) MISSING DIRECTORY”
While trying to do multiprocessing with arcpy, I am occasionally running into this error:
FATAL ERROR (INFADI)
MISSING DIRECTORY
I have no clue what is triggering this error, and it crashes the ...
7
votes
4answers
2k views
Get all the points of a polyline
I have some polyline feature objects in python. Now I want to get all the points of polylines.
For example, if a polyline has start point [0,0] end point [5,5].
Result: ...
7
votes
2answers
397 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 ...
7
votes
1answer
838 views
How to export only certain columns to a CSV file in ArcGIS?
I've written a python script using arcpy which outputs a polygon feature class into a File Geodatabase. I have added a function to export the attributes to a separate CSV file. I am using the code ...
7
votes
1answer
77 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
votes
2answers
1k views
Rotate features in ArcGIS 10
I have a series of polygons that I want to rotate. Each polygon has a rotate angle field and an anchor point xy coordinate fields. All anchor point xy's are on a node of the polygon. What is the ...
7
votes
1answer
948 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 ...
7
votes
1answer
786 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" ...
7
votes
1answer
259 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
votes
2answers
1k views
Python Geoprocessing Service Script - how to use SetParameter
I have a script that needs to be published to ArcGIS Server as a geoprocessing service. This script computes a set of records in table form. I need to set an output parameter so that it returns the ...
7
votes
2answers
112 views
How to remove spikes in polygons with ArcGIS 10/Python?
In the picture below you can see a polygon layer, representing steep slopes, extracted from a TIN. The polygons have a lot of spikes in them. I would like to remove these spikes while the rest of the ...
7
votes
1answer
193 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 ...
7
votes
0answers
182 views
Two machines running the same arcpy based software - only one is leaking memory
Ok, so I'm running a rather large Python application based on arcpy on two separate machines - one of them is leaking memory and one is not. Both are running the same operation in the software.
The ...
6
votes
4answers
1k views
How to create arcs between two points in Python?
I've been working on an python script automating the visualization of live point data. I have a table with two coordinate pairs. I'd like to connect these two point with an arc of a circle or similar ...
6
votes
3answers
1k views
How to delete feature class features faster (ArcPy)
I have written this script that recurses through all feature classes in a given set of feature datasets and deletes all their features. It appears to do the job but it runs pretty slowly. Is there ...
6
votes
2answers
412 views
Can I get a list of my selected features in ArcGIS by using Python code?
I have a question regarding selections in ArcGIS. Assumed I have one layer in ArcMap and I have selected two of five features. Is it possible to get a list of all selected features by using Python? It ...
6
votes
2answers
731 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
votes
1answer
442 views
Fastest way to count the number of features in a feature class?
With the introduction of the Data Access module in arcpy (30x faster search cursors), I want to know if counting features matching sql criteria is faster than the traditional MakeTableView + GetCount ...
6
votes
2answers
165 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
votes
3answers
653 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
votes
3answers
453 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
votes
1answer
549 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
votes
2answers
445 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 ...
6
votes
4answers
1k 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
votes
2answers
721 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 ...
6
votes
1answer
337 views
Counting Files with a Spatial Reference using Python
I need to display a list of feature classes with an unknown spatial reference, and the number of feature classes with a spatial reference. I think I have the first part right, but having troubles with ...
6
votes
1answer
215 views
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 ...
6
votes
1answer
299 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:
...
6
votes
2answers
963 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.
6
votes
1answer
180 views
Why does tool take longer to run when in Python script?
I have written a python script that does some euclidean allocation. For that I use arcpy.gp.EucAllocation_sa() method. Now, my python script takes 30-40% extra time than spatial analyst euclidean ...
6
votes
1answer
193 views
Algorithm to fill the gaps adjacent to parcels
I would like to find a way to fill the gaps between the road and its surrounding parcels, like described in picture below:
I have different parcels like A and B , i want to fill the gaps by adding ...
6
votes
2answers
362 views
reorder a polygon shape file (not sort)
I've written a script which produces a polygon shape file 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 ...
6
votes
1answer
529 views
Is there anyway to make GPModels with python scripts execute faster?
I do not know if anyone else has this problem but my GPModels that include simple python scripts seem to take way too long to execute. One example is a model I built which is a simple select feature ...
6
votes
3answers
127 views
Are there any open source Python modules compatible with arcpy that will allow complex SQL queries?
I am trying to handle string (non-geometry) duplicates in a large attribute table of a shapefile without having to convert to gdb and back or connect to a postgres db. I need to be able to use a count ...
6
votes
3answers
238 views
Insert points into SQL Server?
I am collecting X and Y values from a web service (Twitter) via a python script. In the long run, this will run over a period of months and I intend on stopping at around the 6 million point mark.
...
6
votes
1answer
190 views
Why are results from Python tool not in Results window?
I am relatively new to ArcPy 10. and I want to return the list of feature class from a dataset. I can see them through the message, but cannot see them from the result window. Actually there are only ...
6
votes
1answer
471 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:
...
6
votes
1answer
312 views
With arcpy, how do I detect relationship classes in a file GDB (or can't I)?
I would like to be able to detect relationship classes in a file GDB. Because users of my script might have only an ArcView level license, they would not be able to manipulate the schema of a feature ...
6
votes
2answers
87 views
Refresh open attribute table in ArcMap (arcpy)
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 ...
6
votes
1answer
192 views
How to draw shapes with highest possible decimal accuracy
I am trying to read input of lat and long to draw the shape based on condition.The input is standard array of lat and long with 15 decimal accuracy. I am realizing - I am loosing some decimal accuracy ...
6
votes
1answer
871 views
ArcObjects C#: Create Random Points fails with ERROR 999999: Error executing function
I am having trouble running some ArcObjects C# code that calls create random points. I would not be doing this in ArcObjects, but I am suffering with the same issue using Arcpy as seen here:
...
