CorridorDesign

Corridor Design Blog

News and views on wildlife corridors, linkages, and connectivity

Posted by
Dan Majka
on Oct 02 2009
1 comments

Common ArcToolbox Errors

Two errors have come up repeatedly so far when using the CorridorDesigner toolbox:

Patch Modeling error

PROBLEM: The Patch Modeling tool crashes, and gives a text string such as this:

Traceback Info:
File "C:\...\hab_patchConfigGeneral.py",
line 69, in groupPatches
suitPatches = groupIntoPatches(hsmAvg)

Error Info:
exceptions.RuntimeError:
An error was encountered while executing Reclassify.
Failed to execute (Reclassify).

SOLUTION: The Patch Modeling tool crashes in ArcGIS 9.2 when none of the service packs have been installed. To fix this bug (as well as a lot of others), you should downloaded the latest service pack for ArcGIS, service pack 4. This is available on ESRI's site (scroll down 1/3 of the way to download ArcGISDesktop92sp4.msp, the 176 MB file).

To determine if you have installed any of the service packs, open ArcMap, and go to Help > About ArcMap. If the build number is 1324, you haven't installed any service packs yet. See ESRI's site for more information.

Habitat Modeling error

PROBLEM: The Habitat Modeling tool crashes, and gives a text string such as this:

- PYTHON ERRORS: ---------------
Traceback Info:
File "H:\Dan\CORRID~1\CORRID~1\CORRID~1\CORRID~1\tools\ARIZON~1\
hab_hsmMain.py", line 63, in ? hab_hsmGeoprocessing.reclassFactors(specDirPathString, specName, workspace, activeFactorDict, gp)

Error Info:
exceptions.RuntimeError:
An error was encountered while executing ReclassByASCIIFile.
("esriGeoAnalyst.GridEngine") Unable to initialize reclass table
Error in executing grid expression
Failed to execute (ReclassByASCIIFile).

SOLUTION: The Habitat Modeling tool crashes when the directory path to the tools begins with the same word in consecutive nested folders. In the case above, we see the string:

File "H:\Dan\CORRID~1\CORRID~1\CORRID~1\CORRID~1\tools\ARIZON~1\
hab_hsmMain.py"

The tools were in a saved in the path H:\Dan\Corridors\CorridorDesign\CorridorDesigner\
CorridorDesigner_v02.
To fix this problem, make sure that each of the folders begins with a different word. For example, you might have H:\Dan\tools\CorridorDesigner\. Sometimes when you unzip the tools after downloading them from our website, you get two nested folders with the same name, such as this: C:\CorridorDesigner_Toolbox_v02\CorridorDesigner_Toolbox_v02\... If this happens, simply copy the tools to the uppermost directory, then delete the nested folder.

Comments

Connie Maxwell said on
Apr 24 2010
at 11:50 AM

Hello Corridor Design.

I am having trouble with creating the topographic position raster. I have done the tutorial, and it worked fine there. When I do it in my project file, I have tried using both DEM coverage at 30 meter resolution (1 arc second) and 10 meter resoultion (1/3 arc second), and I get the same results. The output raster file does not have the name I gave it, no matter what I name it, the new raster is called “slope_deg”. slope_deg does not seem to have four value and it does not create an attribute table. I got my DEM off of the USGS National Map seamless server, and it does not have attribute data, whereas your dem_m raster did. Is this the problem? And how can I fix it?

Thanks so much for your help. This is an amazing thing you have done, I feel like it makes GIS worthwhile.

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