Error loading HomeRange plugin on Mac OSX[was: Re: [Qgis-user] Fwd: Hello, ]

[Carson Farmer]

Hi all,
> With all this, I was able to install and enable the HomeRange plugin 
> in Qgis 1.1.0 once - it loaded and showed up in the plugins menu.  
> After restarting Qgis, I got an error loading HomeRange:
>
> Traceback (most recent call last):
>   File "", line 2, in
>   File 
> "/Users/kyngchaos/.qgis//python/plugins/HomeRange_plugin/__init__.py", 
> line 32, in
>     from HRplugin_main import HRPlugin
>   File 
> "/Users/kyngchaos/.qgis//python/plugins/HomeRange_plugin/HRplugin_main.py", 
> line 40, in
>     from HRplugin_dialog import Dialog
>   File 
> "/Users/kyngchaos/.qgis//python/plugins/HomeRange_plugin/HRplugin_dialog.py", 
> line 44, in
>     from HRplugin_algorithm import *
>   File 
> "/Users/kyngchaos/.qgis//python/plugins/HomeRange_plugin/HRplugin_algorithm.py", 
> line 46, in
>     import rpy2.robjects as robjects
>   File "/Library/Python/2.5/site-packages/rpy2/robjects/__init__.py", 
> line 12, in
>     import rpy2.rinterface as rinterface
>   File 
> "/Library/Python/2.5/site-packages/rpy2/rinterface/__init__.py", line 
> 6, in
>     R_HOME = os.popen("R RHOME").readlines()
> IOError: [Errno 4] Interrupted system call
This appears to be a general PyQt problem with 'popen', and appears to 
be especially problematic for macs. I think what's happening is that 
PyQt is interrupting the (slower?) os.popen command, making it 
impossible for rpy2 to find RHOME. This is why things work when entered 
into a normal console...
I have yet to find a way to effectively fix it, but I'm going to look 
into it further tonight, so hopefully I'll have a solution in the next 
few days. It actually doesn't happen all the time, which makes it 
slightly harder to pin down. ...

Carson

-- 
Carson J. Q. Farmer
ISSP Doctoral Fellow
National Centre for Geocomputation (NCG),
Email: Carson.Farmer at gmail.com
Web:   http://www.carsonfarmer.com/
       http://www.ftools.ca/