The act of setting up computing instructions, usually stored in a file and interpreted at run time.
31
votes
9answers
2k views
Alternatives to using Arcpy
I seem to use ESRI's Arcpy site package for virtually all of my python geoprocessing. To ESRI's credit, these are an incredible suite of tools that can help accomplish a great deal. However, I would ...
18
votes
6answers
3k views
Has anyone found any informative documentation about ESRI's ArcPy Python module?
Has anyone found any informative documentation about ESRI's ArcPy Python module?
13
votes
1answer
1k views
How to have a python script self terminate in ArcMap10?
I have tried sys.exit, but it doesn't seem to work in ArcMap. Anyone know how to do it?
12
votes
5answers
4k views
How to get the extent of each polygon in a shapefile?
In arcgis 10 and python I want to get the extent (xmax, ymax, xmin, ymin) info of each of the polygons in a shape file.
I can get the extent of the whole shape file using
...
12
votes
6answers
3k views
Bulk field rename in file geodatabase
I have a file geodatabase with several hundred feature classes in it.
Some feature classes have a field that got named incorrectly, and it got named "SCHEMA_FEATURECLASS_ENTITY" instead of just ...
12
votes
1answer
584 views
How do you write a Python script for repairing data sources in ArcGIS 10
So, I have about 50 mxd's with all broken layers that I have been going through and manually resetting. The data was moved from another computer and the folder structure was changed so it isn't just ...
11
votes
2answers
269 views
Measuring Script Writing Competency
I've been asked by my manager to come up with some sort of competency measure for an employees understanding of scripting/programming. Because I am a self taught programmer, I really don't have a ...
11
votes
1answer
578 views
How can I display raised error messages to the user in the ArcGIS geoprocessing results window?
Question:
Can print statemnts raised from a custom exception be displayed in the gp results window?
Background:
I modified a script that I found that takes two inputs from a user, finds the ...
9
votes
7answers
736 views
Are there any “highly customizeable” GIS platforms out there or am I doomed to manual labor?
I'm new to this site which I find useful and refreshing until now.
And to my question ( WARNING: it's a bit long, so you can skip right to the question two paragraphs down).
I was educated in GIS ...
9
votes
2answers
533 views
Python scripts that run inside ArcMap vs ones that run outside?
I'm just starting to get into Python scripting for work..
I'm currently creating a script to automate a process.
Basically, it asks the user the client name, gets a projection if available, creates ...
9
votes
2answers
3k views
How to make a button that calls a python script as a command rather than a script tool?(ArcMap 10)
I believe that in Arc9.3, commands could be created using VBA scripts. To add a custom command, you would navigate to Customize > Toolbars > Customize... and click UIControls. However, UIControls is ...
9
votes
3answers
2k views
Setting parameters in Script Tool using Python
I hate to bug you all with the same problem over and over again but I run into a new problem everytime I make a slight change to the code. All I did to the code below was to replace field names to ...
8
votes
3answers
1k views
How do I use variables from one Python script in other Python scripts?
I want to set up a single python file containing variables that have the locations of all my data sources. This would then be used by all my other scripts, then as a data source changes, I only have ...
8
votes
1answer
326 views
How to make a new raster using con() script in Python?
I'm new to Python and have been trying to code a raster calculator style script. Basically, I want to convert a raster that has values 0 to -10,000 into a raster that is populated by 1s between ...
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
2answers
825 views
Automatic batch update a file geodatabase from shapefiles
Every week I need to update the same shapefiles that are used to produce up to date maps. The files are downloaded from 3 different web-servers.
The thing I want to do is to have a script that can ...
7
votes
1answer
848 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
262 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 ...
6
votes
2answers
1k views
How to calculate XY coordinates in Decimal Degrees from projected dataset in model or script?
Is it possible to calculate points XY coordinates in Decimal Degrees in model or script when a feature class is in projected coordinate system?
It's easy when a FC is in geographic coordinate system:
...
6
votes
1answer
761 views
Setting units in python using ArcGIS 10
I want to calculate the area of each polygon in a shapefile. How do I control what the units of measurement are?
def getArea(shapefile):
"""Print area of polygons"""
Rows = ...
6
votes
1answer
779 views
How to write standalone Python scripts using QGIS?
I've been learning how to use the Python Console in QGIS using references from qgisworkshop.org. I'm familiar with writing standalone scripts in ArcGIS and want to learn how to do the same with QGIS.
...
6
votes
1answer
1k views
ArcMap Field Calculator syntax (again)
I'm trying to string together a field calculator script that will populate all the records of a field at once based upon values in a number of fields. I can't even get the first part of the command ...
6
votes
1answer
635 views
ArcGIS median value from a layer
I've been hunting around ArcGIS 9.3 and having no success at finding a tool/function that can give me the median (not the mean/avg) tabular value of a spatial database. For example, if I have a data ...
5
votes
3answers
180 views
Methods for lat/lon quality control?
I have a database with fields including latitude, longitude, city, state, and country.
When mapped, it is clear that a number of the sites are in the wrong location - most commonly because of a sign ...
5
votes
2answers
252 views
Better “ESRI recommended” method other than Pythonscript for filling in patterns into attribute table column?
Attribute tables in ArcGIS are not nearly as easily editable in comparison to something like Excel. For example, you have sorted the table based on some column value, and now want to fill in the ...
5
votes
2answers
456 views
How to use QGIS Zonal Stats Plugin from Python Console?
I am using the Zonal Stats plugin in QGIS to extract raster statistics from overlaying polygons (I have shapefiles of species distribution and I want to extract environmental data from within each ...
5
votes
1answer
130 views
Error using con in Map Algebra in Python script
I am experiencing a painful problem in the middle of a Python script I am writing. When I get to a Map Algebra function, I have tried two different options and both return a different error.
At first ...
5
votes
1answer
267 views
Postgres/postgis cursors
I have a road network with StreetName and min/max address ranges for each segment (ie- StreetName = 'Main St', Min = 100, Max = 199). I also have individual address points with similar information ...
5
votes
1answer
541 views
arcpy.mapping.ListLayoutElements() takes longer in a tool than in ArcMap
Has anyone else noticed that accessing elements from arcpy.mapping.ListLayoutElements() through a tool script takes longer than within ArcMap? Whether using a specific name, wildcard or nothing, the ...
5
votes
2answers
1k views
(New at Python Scripting) Creating a Loop so i can replace text in page layout in multiple mxds instead of one mxd at a time
I found some code on a website that will perform a search and replace on page layout text elements. Currently you can only do it one MXD at a time. I was hoping to change the code so I can do a search ...
5
votes
1answer
404 views
Working around the raster calculator in ModelBuilder - ArcGIS
I am experiencing a problem with the raster calculator in the Model Builder under ArcMap 10.
I need to combine two layers: a drainage map (issued from a series of previous operations on a DEM) and a ...
5
votes
1answer
511 views
Script tool Value error
I've been struggling to get my script tool to run without receiving the following error:
<class 'arcgisscripting.ExecuteError'>: Failed to execute. Parameters are not valid.
ERROR 000735: ...
4
votes
1answer
695 views
FIELD CALCULATOR VB scripting
In my attribute tables field. I am trying to get rid of the "&" in between names i.e. "John Adams & wife" and want it to say "John Adams and Wife" in all the attributes with "&". What is ...
4
votes
2answers
257 views
How to import GDAL in Jython?
I'm trying to use jython with GDAL on Windows. Python and GDAL are installed through MS4W and work perfectly together. Jython is installed manually, but I can not import GDAL. I tried to update ...
4
votes
3answers
3k views
ArcGIS 10/arcpy: Help needed with syntax for CalculateField_management in Python script
I need to use CalculateField_management in a Python script, and the calc expression needs to concatenate a runtime variable, a string, and a field (string) value. I have searched all over for ...
4
votes
5answers
282 views
Python loop Polygon to raster not working
I want to convert a large number of different shp polygons to raster in ArcGIS 10.1, using an existing field column "class" for the new raster classes. I am not very fluent in python but I thought ...
4
votes
5answers
365 views
Can a new point automatically be populated with data from the containing polygon
I need some help to create a script.
Imagine that I'm using 3 shapes: 1 point and 2 polygons. When I create a new point I want it to assume some attributes of the polygons in which that point is ...
4
votes
3answers
2k views
Batch shapefile merge, with adding and calculating field
I have over 60 shapefiles, all in their own folders. I'm looking to add a field titled "Name" and then populate it with the name of the shapefile. I want to be able to do this so that I can then ...
4
votes
2answers
826 views
Check if shapefiles exists in folder
In ArcGIS modelbuilder I want to check if a shapefiles exists, if not I want to create the shapefile in that folder. I guess the calculate value tool within ArcGIS modelbuilder can be used, but I need ...
4
votes
3answers
874 views
How to send someone a file of a custom python script with all parameters for the popup interface already defined?
I have a python script in ArcGIS 10 that when clicked, has a popup for a user to choose parameters. I would like to send this file to someone else. While I could send them the python code and have ...
4
votes
3answers
2k views
Python: Combine multiple Shapefiles
i have got a lot of Point-Shapefiles (r20010101.shp, r20010202.shp, r20020101.shp...).
Each of them has the same amount of points at exactly the same location. In a column that is named after the Date ...
4
votes
6answers
1k views
script for automated line drawing procedure for set of start and end points
A colleague conducted a field survey and recorded the start and end points of the transects with a GPS. These points have been imported to ArcMap 9.3 as 2 point layers. Both layers have a "transect ...
4
votes
2answers
229 views
Describing a coordinate system in arcpy
I have a python script in ArcGIS 10.1 which takes in a few inputs from the user. One of the inputs is a coordinate system. I would like to test whether the coordinate system the user chose was ...
4
votes
2answers
167 views
ToolValidator not doing anything
I have created a simple script tool which has a single parameter of type "String". I have written the tool validation to disable the input field (simply trying to learn tool validation). The ...
4
votes
2answers
1k views
How does one build a Python script that exports to several output files?
I'm trying to build a Python Script that will receive one feature layer that will be clipped by several adjacent grid squares (each in a different shapefile) and output several shapefiles.
Now, I've ...
4
votes
3answers
151 views
ogrinfo bash script failure
I need to recursively document a bunch of Shapefiles using orginfo in many directories. For example,
$ tree -P *.shp
.
├── acfish2s
│ └── acfish2.shp
├── airports
│ ├── airport_runways.shp
│ ...
4
votes
1answer
2k views
How to change a text element's font size using python? (ArcMap 10)
I need my script to change the font size of a text element if the string is too long to fit in the title section of the map. I've looked into it using Arcpy, but haven't had any luck. Does anyone know ...
4
votes
2answers
894 views
How to create a checkbox parameter in a ArcGIS custom Python tool?
I am working on creating an ArcGIS tool from a Python script I am writing. I am wondering if it is possible to have a checkbox parameter. Basically what I want to do is have a parameter where the ...
4
votes
2answers
2k views
Any idea how to resolve “ImportError: No module named arcgisscripting”
I am trying to run a ESRI python script from eclipse and get the following message:
"ImportError: No module named arcgisscripting"
I can run this in IDLE... any ideas?
4
votes
2answers
186 views
How to select a subset of separate bands in GRASS GIS?
As you know landsat data has separate files for different bands. Creating a
subset is a wise option to work on region of our interest. Therefore, I used
this method to subset my image -
d.zoom || ...
