[Qgis-developer] MCELite: An experimental tool for multi-criteria evaluation (MCE)

[JP Glutting]

Ok, just found the menu reindex bug - fixed (new package uploaded).


On Sat, Jan 8, 2011 at 3:47 PM, JP Glutting <jpglutting at gmail.com> wrote:

> Hi Paolo,
>
> I see what happened. You were using the configuration files included in the
> distribution, and it was trying to write to a directory that only exists on
> my computer (because the full path names are used in the config files - I
> haven't figured out how to do this cross-platform with relative paths). It
> checks to see if there is a value in there, but it didn't check to see if
> the directory existed. Fixed that. I also made it check all input files to
> make sure they exist as well.
>
> To make the plugin work, you are going to have to enter a new filename that
> can be written in your computer. I should probably leave the results file
> out of the configuration file all together (but it saved me time in
> development).
>
> There is still a minor bug where the interface does not reset the factor
> dropdown menu to the number of correct number of loaded factors when reading
> a Boolean configuration file (the others work properly). This should work,
> but it doesn't seem to be causing a problem, although it is irritating. I
> will try to fix this.
>
> Do I need to increment the version number every time I upload a new
> package, or is the date enough to push the new code out to users?
>
> Thanks for the feedback!
> JP
>
>
> On Sat, Jan 8, 2011 at 8:40 AM, Paolo Cavallini <cavallini at faunalia.it>wrote:
>
>> Il giorno ven, 07/01/2011 alle 17.43 +0100, JP Glutting ha scritto:
>> > Hello All,
>> >
>> >
>> > I just wanted to let you know that I have uploaded my tool, MCELite,
>> > to the PyQGIS repository. I had to try a few times to get it uploaded,
>> > but it seems to work when downloaded from the repository.
>> >
>> >
>> > MCELite takes raster files representing decision criteria and analyzes
>> > them using three types of multi-criteria evaluation (MCE): Boolean
>> > overlay, weighted linear combination (WLC) or ordered weighted
>> > averaging (OWA). It also does sensitivity analysis of the results of
>> > an analysis. It hasn't been extensively tested, so it is marked as
>> > experimental, but it does run on Windows, OS X and Linux. The package
>> > includes documentation and soem sample data data sets and
>> > configuration files (it reads configuration files in addition to
>> > having interactive input).
>> >
>> >
>> > Because I wrote it for a study project, I didn't use any existing code
>> > (it turns out it wouldn't have been a problem, but I wanted to be
>> > safe) and I rolled my own Raster object to do the overlay instead of
>> > using rastercalc or something like that. I can still rewrite the back
>> > end, but it would be a lot of work.
>> >
>> >
>> > The big thing missing from the tool is any kind of fuzzy set
>> > membership analysis. I couldn't find any plugins for QGIS, so you need
>> > to create the input rasters with another tool, if you want to do any
>> > kind of interesting analysis.
>> >
>> >
>> > Anyway, feel free to try it out, and let me know when it breaks. I am
>> > sure it still has tons of bugs.
>>
>> Tried, got an error:
>> =======================================================================
>> Traceback (most recent call last):
>>  File "/home/paolo/.qgis/python/plugins/mcelite/MCELiteDialog.py", line
>> 755, in accept
>>    self.runAnalysis(snd)
>>  File "/home/paolo/.qgis/python/plugins/mcelite/MCELiteDialog.py", line
>> 780, in runAnalysis
>>    self.qm.runQuery(self.progress)
>>  File
>> "/home/paolo/.qgis/python/plugins/mcelite/mcelite/QueryManager.py", line
>> 700, in runQuery
>>    self.writeMCEConfig()
>>  File
>> "/home/paolo/.qgis/python/plugins/mcelite/mcelite/QueryManager.py", line
>> 572, in writeMCEConfig
>>    fHandle = open(filename, 'w')
>> IOError: [Errno 2] No such file or directory:
>>
>> '/Users/jpg/pyGIS/qgismcelite/examples/bool_osx_example_configuration_Bool.txt'
>>
>> Versione Python:
>> 2.6.6 (r266:84292, Dec 26 2010, 22:48:11)
>> [GCC 4.4.5]
>>
>>
>> Versione di QGIS:
>> 1.7.0-Trunk Trunk, 14993M
>> =======================================================================
>>
>> Thanks for including the documentation. It would be useful if you could
>> add an help/about button to read it directly form the plugin menu,
>> better if in html.
>> All the best.
>> --
>> http://www.faunalia.it/pc
>>
>>
>
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