On Jul 7, 2012, at 2:54 AM, Phil Cummins wrote:
> Hi,
>
> I am using QGIS 1.8.0 in Mac OS Lion. I have installed the Openlayers plugin
> and made a map I am happy with. But now I have to make about a dozen similar
> maps so I'd like to automate the process. I am used to writing Python
> scripts, but am new to pyqgis.
>
> I have added /Volumes/Macintosh\
> HD/Applications/QGIS.app/Contents/Resources/python to my PYTHONPATH, and set
> LD_LIBRARY_PATH to /Volumes/Macintosh\
> HD/Applications/QGIS.app/Contents/MacOS/lib. So I can now import qgis.core
> and qgis.utils with no problem. But I can't seem to access any plugins. E.g.
>
You don't need the disk name at the beginning of the pythonpath, just:
/Applications/QGIS.app/Contents/Resources/python
> In [70]: qgis.utils.loadPlugin('openlayers')
> Out[70]: False
>
> and:
> In [71]: qgis.utils.plugins
> Out[71]: {}
>
> The open layers plugin is installed in ~/.qgis/python/plugins, and other
> plugins appear to be in /Volumes/Macintosh\
> HD/Applications/QGIS.app/Contents/PlugIns.
>
> There appears to be a qgis.utils.plugin_paths, and a
> qgis.utils.pluginDirectory, as well as things like findPlugins() and
> loadPlugin(). Can anyone please tell me if these are what I need to use, and
> if so does anyone know the correct calling sequence to get my plugin loaded
> properly?
>
> Also, I have seen that pyqgis scripts should use QgsApplication.setPrefixPath
> to set the QGIS 'installation directory', and then call
> QgsApplication.initQgis(). But what is the 'installation directory':
> QGIS.app, QGIS.app/Contents, QGIS.app/Contents/MacOS? Perhaps someone could
> please tell me what subdirectories the installation directory should contain?
>
I don't think you need to set the prefix path, it's set when QGIS starts. But
if you are running a python script without QGIS running, I guess it would need
to be set... I think it's the MacOS subdir.
-----
William Kyngesburye <kyngchaos*at*kyngchaos*dot*com>
http://www.kyngchaos.com/
"This is a question about the past, is it? ... How can I tell that the past
isn't a fiction designed to account for the discrepancy between my immediate
physical sensations and my state of mind?"
- The Ruler of the Universe
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