Python is an open source interpreted programming language used in many GIS programs.

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2
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1answer
786 views

How to display local file's geometries as rubber bands in QGIS

I'd like to get geometries from a local file (e.g. GML) displayed as rubber bands (QgsRubberBands) in QGIS. However, I wouldn't like to load the layer into the map because in the real scenario there ...
6
votes
1answer
407 views

Changes in synchronized replica not shown in ArcMap or ArcCatalog without refreshing

I am synchronizing a one-way replica in ArcEditor using Python. I tried adding RefreshActiveView and RefreshCatalog to the code, but I still need to refresh the synchronized database to see the ...
2
votes
3answers
7k views

Python script: Access data from databases [closed]

I need to access data that is inside an oracle database using a python script. Its a Unix server running oracle 10g. I dont have much access to the database server. It works fine on model builder ...
2
votes
1answer
1k views

Batch intersect from a text file using Python (ArcGIS)

I am attempting to modify my code below which reads from a text file of shapefiles and executes an intersect and outputs them to a user specified location: import arcpy, sys, os from arcpy import env ...
4
votes
2answers
1k views

GEOS Python: Taking Union of several geometries

I am using the GEOS/OGR library in Python. I have files full of geometries that overlap, and I want to convert these to files of geometries that don't overlap. The way I have been approaching this ...
6
votes
1answer
629 views

Using python, how do you “reload cache” an opened Attribute Table

Used python to update a shapeFile through cursors. The Shapefile is updated, but there could be an opened Attribute Table. Manually you can hit "reload cache" to update the Attribute Table and see ...
3
votes
1answer
2k views

Unable to change data source path for group layer file

I am having some difficulty changing the data source for a group layer. Below is the code that I am using. It processes a LYR file successfully that has a single data source but if LYR file has more ...
2
votes
1answer
168 views

Merge section polygons in PLSS

I am trying to merge quarter quarter sections of polygons from PLSS into a quarter section. However, I also want it assigned to correct Township/Range/Section while merging. I know I can hand merge ...
1
vote
1answer
108 views

How do I retrieve an arc ascii grid file from NED 1/3 second data using python and OWSLib

I have my bounds, and have been able to connect to the server http://imselev.cr.usgs.gov:80/wmsconnector/com.esri.wms.Esrimap/USGS_EDC_Elev_NED_3? in python. What I don't know how to do is send a ...
3
votes
2answers
592 views

Using Batch Project Script to read from a text file as Input

I was wondering how I would modify the code of the Batch Project script shown below, to read from a text file of shapefile names as input. A sample of the textfile is shown under the code: #Import ...
6
votes
1answer
2k views

Reproject script in Python with GDAL

I'm having a lot of trouble with GDAL. Besides just the at times lacking documentation, there seems to be little support in Python. Anyways this is just a batch reproject script that goes thusly: ...
3
votes
1answer
323 views

Python SQL connection causes crash in ArcMap

I have the following code which I have striped down to just included the part that is causing a crash in ArcMap. import pymssql # Connect to the Research db using Windows Integrated Authentication. ...
2
votes
0answers
147 views

OpenLayers Issue: plugin crash during opening [closed]

I've encountered problems while loading the OpenLayers plugin in Quantum GIS 1.7.4. My hardware: Windows 7 Home basic 64 Bits My Python crash window: Traceback (most recent call last): File ...
1
vote
2answers
497 views

FieldPyculator Plugin - How to Classify Fields?

Could someone tell me how to classify/populate fields with QGIS FieldPyculator Plugin? In the Attribute Table, I have a field named POPULACAO with population data: I want to apply a weight to ...
15
votes
3answers
7k views

How can I iterate over map layers in QGIS python

I'm having trouble figuring out how to iterate over map layers. I can access the currently highlighted layer in the table of contents via iface.activeLayer() but I want my code to operate on all ...
8
votes
0answers
412 views

Two machines running the same arcpy based software - only one is leaking memory [closed]

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 ...
1
vote
2answers
217 views

Toggle editing option in plugins

I am working on python plugins for QGIS.I developed the plugins same as RT SQL LAYER plugins. When we draw the layers using query builder of "Add Postgis Layer" option,toggle editing option is ...
2
votes
1answer
5k views

How to Clear Selected Features in Arcmap using Python

I would like to Clear Any Selected Features using python since it causes an error if I run my tool and the user has a recorded selected. I need some thing here that runs ("CLEAR_SELECTION") first ...
0
votes
1answer
816 views

Python: 'Select by Attribute' in ArcMap 10

I would like to get the search the field value 'SURFACE LOCATION%' in column 'RefName' in layer '*.dwg Annotation' This is what I have so far... # Find the Dataframe df = ...
2
votes
1answer
609 views

Python: Run script when opening an MXD in ArcGIS 10

This post is related to Run a Python Script when opening an MXD? I would like a python script to run every time a .mxd is opened. However, the link above uses VBA to do it, which ESRI suggests ...
0
votes
1answer
610 views

Defining projection in arc toolbox (JSON to shapefile) in python

I have a arc toolbox which converts JSON txt file to a shapefile but we have to define the projection. How can I hard code the defined projection so that user don't have to input the projection ? ...
2
votes
2answers
4k views

How can I save raster dataset using arcpy

I'm trying to save filled raster object to geo database by my specified filename. import arcpy from arcpy import env from arcpy.sa import * env.workspace = r"C:\GIS ...
2
votes
1answer
1k views

Outputting results message from spatial statistics tool to text file using Python?

I'm using the following tool in ArcGIS 10 - Calculate Distance Band from Neighbor Count (Spatial Statistics). I'm using a python script to execute this tool several times on different shapefiles: ...
2
votes
3answers
1k views

Python and CalculateField

I am having trouble with using Python together with my gp.Calculatefield tool in my python script, and I am not sure why.. Heres the code (UPDATED) import arcgisscripting, os, sys myTempWorkspace = ...
10
votes
2answers
516 views

Aggregating Polygons To Meet Privacy Requirements

I have a point feature class representing office locations of all employers in a certain industry. The feature class has an attribute for storing the number of employees working at each office. ...
4
votes
3answers
3k views

'NoneType' object has no attribute

I am new to python geospatial programming. i ran the following script and got the corresponding error message >>> import osgeo >>> import osgeo.ogr >>> shapefile = ...
4
votes
1answer
1k views

How to create an offset polyline in arcpy?

I am trying to create an offset polyline using arcpy, identical to the function in ArcObjects (constructoffset). After trying to access ArcObjects in arcpy, which I found difficult for those not ...
5
votes
2answers
2k views

Converting text file with coordinates to database table in ArcGIS Desktop with Python?

How do I convert a text file with point coordinates to database tables in the dBase (*.dbf) format in Python? I am using ArcGIS Desktop.
7
votes
1answer
997 views

Use Python to find the pathname of “Current” Arcmap

I am trying to find the path name of the current ArcMap document that the python script is currently running in. For Example: "F:\2012\1111\MyArcMap.mxd" I tired using sys.argv[0] as shown ...
15
votes
4answers
2k views

The best language to program with GDAL

I'm going to start to create programs to handle geographical data from a PostGIS server, and going to use GDAL. According to your experience, with the best language to program with it? I can program ...
7
votes
1answer
2k views

How can i create sectors for telecom towers

friends i am seeking advice from the GIS community I work in the Mobile networks industry and i took up a task to create a plugin for QGIS using c++/python that does the following: step 1: Create ...
1
vote
1answer
88 views

Filegeodatabase fanout and Python problem

I have fme wb which does fanout with gdb. It means that in the end as output sets of data I get few new created gdb. But If I start this fme wb within python script It does not do fanout. Just write ...
4
votes
2answers
1k views

Get a pixel value

How can i do this operation: I want to get a pixel value fro the satellite image (Landat, GeoTIFF, 7 bands) using qgis-python. What operators should i use? (for example in qgis's Python Console) ...
3
votes
3answers
1k views

Adding shapefile directly to geoserver

I have py script which is creating shapefiles using shapefile.py. Once the shapefile is created I have to add them manually to the geoserver. Is there a way to add it dynamically to the geoserver? ...
1
vote
1answer
282 views

Using Python in Arcmap to partition strings [closed]

I have a title "Text that remains Proposed Thing to replace" var_a = New Text I want the output to be "Text that remains Proposed New text" Currently outputs this "(u'Text that ...
1
vote
1answer
150 views

Button that allows project search and zooms to site once executed

I am trying to create a button that will execute a Python script. I have limited Python experience. What we are trying to accomplish is to recreate these steps: Query on project Site and Radius ...
9
votes
5answers
6k views

How to workaround large mosaic process which is failing?

I need to mosaic about 550Gb of tif imagery together and the software I have tried keeps failing. The area has been split into zones so that the smallest has approx 200 tiles. I have used the latest ...
11
votes
3answers
5k views

Exporting features with attachments for use outside ArcGIS?

ArcGIS 10 features the new ability to add attachments to individual features to feature classes stored in a geodatabase. One use of this would be to add multiple pictures to a specific location, fire ...
6
votes
2answers
1k views

Big Satellite Image Processing

Im trying to run Mort Canty's http://mcanty.homepage.t-online.de/ Python iMAD implementation on bitemporal RapidEye Multispectral images. Which basically calculates the canonical correlation for the ...
1
vote
1answer
1k views

The table was not found error - ArcGIS 9.3.1, Python

I have a python script that does the following on multiple tables maketableView - not shown in code Addjoin Copyrows MakeTableView it was working ok, until all of a sudden it stopped. Heres ...
3
votes
1answer
224 views

Problem with precision when convert from WKT to shapefile

I have a problem with converting from WKT to shapefile in pygdal. In wkt I have fields with precision (for example real 7.2). When I create a shapefile I have field numeric with no precision (numeric ...
7
votes
3answers
6k views

Splitting lines automatically at specific distances using ArcGIS Desktop?

I have a set of polylines which I need to split at varying distances from their starting points. In general, I'm looking for a something similar to the SPLIT function within the editor tool. There ...
5
votes
1answer
4k views

Exporting .jpg files from data driven pages in Arcmap

I have generated about 90 maps through data driven pages(ArcGIS 10.0). I now want to export them as .jpg files in either landscape or portrait format. I tried python but it is not working, it worked ...
3
votes
1answer
212 views

How to unload() a plugin in QGIS 1.7?

I am writing a python plugin for QGIS 1.7 (started it on QGIS 1.6 but switched to 1.7 recently). Since I switched to 1.7 my unload function doesn't seem to be working anymore. Whenever I implemented ...
3
votes
2answers
923 views

Python Widget Wrapper to extend basewidget class in ArcGIS Viewer for Flex?

I'd like to create a flex wrapper for python code run locally (utilizing arcgis data and outputting data that can be displayed on the flexviewer). I'd like to use gdal or pyproj modules to process ...
1
vote
2answers
1k views

How to automate relative filepath when adding a new toolbox to the arcmap catalog?

So I'm creating an arcpy script for a custom toolbox and I want to make it so that a user can essentially utilize the script in that toolbox without having to change the source path (which I made ...
5
votes
2answers
1k views

How to check if domain already exists?

I am trying to check the existence of domains in my file geodatabase which contains 4 domains (automatically populated after I created some annotation feature classes). My code is as follows: import ...
6
votes
3answers
3k views

Saving *.dbf as *.xls using Python?

i've been let loose in the workplace to learn python to do things in Arcmap10. so, i've learning python as i go and trying to remember the programming i have done. where i am in this project is ...
2
votes
2answers
1k views

Moving all shapefiles (SHP) in MXD to new File Geodatabase (*. gdb) using ArcGIS Desktop?

What I need to do is to move all the shapefiles in an mxd into a newly created gdb, checking prj, and update mxd reference. I have ArcGIS 10 SP4, license ArcView. I studied a bit of Python and get ...
3
votes
2answers
722 views

Adding VBA into a Python script generated by ModelBuilder

I have created a model that does a calculate field and have used VBA in the code block. But when I export it to Python, it doesn't work. Here is the VBA code: new_value = ...