Just a note about the Spqr plugin. I had a few problems in the install that were not necessarily related to itself, but were certainly a pain in the rear, and required some tracking.
First off, it requires rpy, which is all well and good, except that the rpy package does not have a totally exhaustive list of modules that are needed for compatibility with every version of R. My system had R 2.5.0 installed, and the set of .pyd files only had one for 2.5.1. This yielded an error when loading the plugins menu (with the last line containing the crucial information): Traceback (most recent call last): File "", line 2, in File "C:/Program Files/Quantum GIS/./python/plugins\spqr\__init__.py", line 5, in from spqr import Spqr File "C:/Program Files/Quantum GIS/./python/plugins\spqr\spqr.py", line 6, in import doHistogram File "C:/Program Files/Quantum GIS/./python/plugins\spqr\doHistogram.py", line 6, in import opsR File "C:/Program Files/Quantum GIS/./python/plugins\spqr\opsR.py", line 7, in import rpy File "C:\Python25\lib\site-packages\rpy.py", line 134, in """ % RVERSION) RuntimeError: No module named _rpy2050 So, I upgraded to 2.5.1 (even though I could have gone higher, I didn't want to risk breaking any of the packages that I have gotten together thus far). However, when I opened QGis after upgrading, I was met with a flood of errors during the plugin load process, all having to do with the "Rconsole" file (in the R/R2.5.1/etc/Rconsole). After OK'ing the final error, QGis refused to load. The errors were all in BLANK lines however, which turned out to be a problem because it (who IT is I can only guess, maybe python??) wanted Rconsole to be in Unix format, not PC format as is the default for this Windows install. So, I saved it as Unix format, and then all was fine, Qgis loaded without incident, and the stats package ran. r.b. Robert W. Burgholzer Surface Water Modeler Office of Water Supply and Planning Virginia Department of Environmental Quality [EMAIL PROTECTED] 804-698-4405 Open Source Modeling Tools: http://sourceforge.net/projects/npsource/ -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Alessandro Sarretta Sent: Sunday, May 04, 2008 4:35 PM To: Maciej Sieczka Cc: qgis Subject: Re: [Qgis-user] calculate statistics on an attribute table With the spqr (http://www.maths.lancs.ac.uk/~rowlings/Software/Spqr/) python-R plugin you can calculate some simple statistics. Ale Maciej Sieczka ha scritto: > Mars Sjoden pisze: > >> Is there a way to quickly calculate statistics on an attribute table >> column? > > Not that I know of. A workaround for doing this with external software: > > 1. open attrubute table in QGIS > 2. select all rows (select first one, go to bottom of the table, press > ctrl selecting the last row) > 3. ctrl+c > 4. open some spreadsheat/statistics software > 5. paste > > If your layer is PostGIS you can use PostgreSQL advanced stats > features directly. If you want to put your SHP into PgSQL use the QGIS > SPIT plugin or shp2pgsql CLI utility. > > Best, > Maciek > > P.S. > > Please don't hi-jack threads. > > _______________________________________________ > Qgis-user mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/qgis-user > . > _______________________________________________ Qgis-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/qgis-user _______________________________________________ Qgis-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/qgis-user
