Tagged Questions

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2
votes
1answer
51 views

How to catch invalid expression errors in Python?

I have a script that creates a new feature using arcpy.GetParameterAsText, but I'm having trouble creating an error message for incorrect user input. The input for a parcel # should be something like ...
0
votes
0answers
35 views

How can i calculate the width of the dam?

I am working with Reservoir design. Now I am facing problem to calculate the width of the dam. I need to calculate the width based on DEM and height of dam at various points using Python. I am working ...
-1
votes
0answers
25 views

How to use sub queries while inserting record into db using cx_Oracle in python? [closed]

I need to add a symbol with the value of self.wrkArea variable like this (select chr(182) from dual) || self.wrkArea || (select chr(182) from dual) i.e. ¶workarea¶ will be the result. how to ...
3
votes
2answers
150 views

How can you auto-increment in a Python Script (not Field Calculator)?

I want to autoincrement values in a field within a Python script. I've done this using Field Calculator and the code referenced here. I tried using this code in the Python script below but it is not ...
1
vote
0answers
105 views

Convert .mxd to .qgs, MXD2QGS fix?

I've had a look at the following thread about using MXD2QGS and so far I've figured out that this only works with version 10.0 and Python 2.6. I installed MXD2QGS on a machine with Arc10.0 and Python ...
3
votes
0answers
98 views

Exporting records from an attribute table and placing them in a txt file

I am trying desperately to grab records in a shapefile's attribute table and copy them, with additional formatting to a txt file. Below is the code I have developed thus far: I have used the ...
5
votes
1answer
75 views

Cursor only completes one loop

I am at the end of my rope here. This cursor runs fine for one iteration and then stops. It doesn't throw an error, it just completes. There are 3,000 rows in my table, so I don't know why it would do ...
1
vote
1answer
199 views

GRASS Geoprocessing in Python Script

I´m trying to get some GRASS geoprocessig tools running in a python script outside GRASS. I´m able to import grass.script, but I´m not able to get the tools running yet. Does anybody know what I´m ...
9
votes
1answer
199 views

Is there a way to use ArcPy and PyGRASS tools in the same Python script?

I´m trying to write a Python script, that includes different ArcPy / ArcGIS commands and want to combine it with GRASS geoprocessing tools. Unfortunately importing the GRASS libraries doesn´t work. ...
4
votes
1answer
100 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 ...
5
votes
2answers
294 views

Get X, Y coordinates in the center of a raster cell

I am trying to get the X, Y coordinates of all the cells of a raster file, using Python 2.6 and ArcGIS 10.0. I would like to get the X, Y coordinates in the center of the cell. Is there any way to ...
5
votes
2answers
234 views

Read an ArcGIS Feature dataset using GDAL

I am new to GDAL in Python and would like to use it to create a list of populated layers in a ArcGIS mdb Feature datasets. I have the code below that provides a list of all the populated layers but ...
3
votes
1answer
125 views

pair value comparison to generate new raster using arcpy/python

I want to write a function which takes in two arguments (from two rasters) and compare those 2 values against a set of hard coded pair values inside function. Then return a value which i want to use ...
1
vote
1answer
93 views

Rectangle for Clip_management using arcpy

I want to draw an interactive rectangle on screen which should be used as the extent for clipping geometry for raster datasets. Any suggestion?
2
votes
3answers
328 views

pop up message box before a tool execution with arcpy/python

I want to add a box message to pop up before execution of a button tool. When I click a button which will do geoprocessing, i want a box to appear on view before processing with message that i am ...

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