Re: [Qgis-user] Stratified stats of Raster map by vector map in QGIS?
Carson, Sorry I did not answer to this. Yes, this would be a workaround (just have to figure out how to get the centers of the pixels, probably an R function will be the best), but just in the case pixels are a lot smaller than polygons, which is not always the case. Note that many thematic maps are developed from RS images in which pixels are (at least, should be) very small compared to the resulting polygons (which are produced either by digitizing and interpretation, as the Habitat maps in Europe, which are developed from 1:25M and 1:5M orthoimages with sub-meter resolution; or by (best segment-based) classification and subsequent raster to vector conversion). But an important additional use of RS imagery is to actually get information from other sources of imagery for each type of polygon, and these RS images can be much coarser than the images used to generate the polygons. For example, I use time series of NDVI, which are 300m to 1000m resolution only, to derive phenologic attributes. In this application, you get that the boundaries of polygons intersecting pixels very often, and the program must provide the user the choice of (i) weighted mean, (ii) ignoring any not fully included pixel or (iii) count any partially included pixel as if it were fully included. The application of transferring information from raster images to vector thematic maps is crucial for RS applications in the GIS world and, IMO, cannot be left to v.rasts.stats, we need a native tool within QGIS itself. It would be great if you could consider including this functionality in fTools. Thanks a lot for your plugins, they are very useful. Agus Carson Farmer wrote: Agus, Given a vector map (i.e., a land cover map) and a raster of a continuous variable (i.e., height), is there any plugin calculating a table of average (and perhaps other stats) of the raster for each category in the vector? I don't know of any plugins that will do this directly, but here is one possible solution: If you are able to convert your raster to points (i.e. extract the centre of each raster cell as a point), then you could use the 'Join attributes by location' tool in fTools to extract the info that you need (and you can opt to calculate the mean values). Hope this helps, Carson -- Dr. Agustin Lobo Institut de Ciencies de la Terra Jaume Almera (CSIC) LLuis Sole Sabaris s/n 08028 Barcelona Spain Tel. 34 934095410 Fax. 34 934110012 email: [EMAIL PROTECTED] http://www.ija.csic.es/gt/obster ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] QGis proxy settings
Hi
Craig Leat wrote:
Borys Jurgiel wrote:
I've just uploaded the new proxy-friendly version of the Plugin Installer
with
Barry's patch (0.06.5). Proxy users, Could you upgrade and test it please?
In a python console I tried:
import urllib
urllib.getproxies()
{'http': 'http://craig:[EMAIL PROTECTED]:8080/', 'no':
'localhost,127.0.0.0/8,*.local'}
My http proxy requires authentication and I see that my username and
password are returned. I tried adding the following to QPHttp:
self.proxy.setUser('craig')
self.proxy.setPassword('')
But I must be missing something because the repos are still unavailable.
I have upgraded to revision 9552 and now my patch to QPHttp works.
Cool, nice work guys.
Craig
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[Qgis-user] the table manager for the trunk
Hi! I'm using the QGIS 1.0 Preview 1 Windows Build on XP SP3 I installed the new Table Manager Plugin 0.1.5 from http://bwj.aster.net.pl/temp/tablemanager-2008-10-27.zip When I tryed to use it on any ESRI Shapefile I got the same error as Dr. Agustin Lobo reported: Pithon error An error has occured while executing Python code: Traceback (most recent call last): File C:/Documents and Settings/konsulat/.qgis//python/plugins\tablemanager\tableManager.py, line 58, in run if layer == None or layer.type() != layer.VectorLayer: AttributeError: VectorLayer Python version: 2.5.2 (r252:60911, Feb 21 2008, 13:11:45) [MSC v.1310 32 bit (Intel)] Python path:['D:/QGIS-Dev/./python', 'C:/Documents and Settings/konsulat/.qgis//python/plugins', 'D:/QGIS-Dev/./python/plugins', 'C:\\Program Files\\ArcGIS\\bin', 'D:\\QGIS-Dev\\python25.zip', '', 'D:\\QGIS-Dev', 'C:\\Documents and Settings\\konsulat\\.qgis\\python\\plugins\\fTools\\tools'] Regards, D. Vasilev GIS-Sofia EOOD Bulgaria ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] the table manager for the trunk
Tuesday 28 of October 2008 09:53:49 Димитър Василев napisał(a): Hi! I'm using the QGIS 1.0 Preview 1 Windows Build on XP SP3 I installed the new Table Manager Plugin 0.1.5 from http://bwj.aster.net.pl/temp/tablemanager-2008-10-27.zip When I tryed to use it on any ESRI Shapefile I got the same error as Dr. Agustin Lobo reported: The zip I've provided above is for recent trunk QGIS version. For the 1.0-Preview-1 you should use the 'ordinary' table manager from my repository (you may need to enable the 3rd party repositories). ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] the table manager for the trunk
No module named psycopg You need to istall psycopg http://pypi.python.org/pypi/psycopg/1.1.21 take care -- Giovanni -- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] the table manager for the trunk
Tuesday 28 of October 2008 11:22:31 Giovanni Manghi napisał(a): No module named psycopg You need to istall psycopg http://pypi.python.org/pypi/psycopg/1.1.21 No, you don't need it :) This Table Manger version doesn't include the PostGIS export yet, so I'm removing the dependence. Wait few minutes and upgrade to the 0.1.4 please ;) ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] the table manager for the trunk
Borys Jurgiel написа: Tuesday 28 of October 2008 11:22:31 Giovanni Manghi napisaЕ‚(a): No module named psycopg You need to istall psycopg http://pypi.python.org/pypi/psycopg/1.1.21 No, you don't need it :) This Table Manger version doesn't include the PostGIS export yet, so I'm removing the dependence. Wait few minutes and upgrade to the 0.1.4 please ;) ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user Hi, Borys! I installed version 0.1.4. Installation was successful but when I tryed to use it I got an error: Python error An error has occured while executing Python code: Traceback (most recent call last): File C:/Documents and Settings/konsulat/.qgis//python/plugins\tablemanager\tableManager.py, line 61, in run dialoga = doTableManager.TableManager(self.iface) File C:/Documents and Settings/konsulat/.qgis//python/plugins\tablemanager\doTableManager.py, line 171, in __init__ self.setupUi(self) File C:/Documents and Settings/konsulat/.qgis//python/plugins\tablemanager\tableManagerUi.py, line 271, in setupUi self.retranslateUi(Dialog) File C:/Documents and Settings/konsulat/.qgis//python/plugins\tablemanager\tableManagerUi.py, line 294, in retranslateUi self.butSaveAsPostGis.setToolTip(QtGui.QApplication.translate(Dialog, To be implemented..., None, QtGui.QApplication.UnicodeUTF8)) AttributeError: butSaveAsPostGis Python version: 2.5.2 (r252:60911, Feb 21 2008, 13:11:45) [MSC v.1310 32 bit (Intel)] Python path:['D:/QGIS-Dev/./python', 'C:/Documents and Settings/konsulat/.qgis//python/plugins', 'D:/QGIS-Dev/./python/plugins', 'C:\\Program Files\\ArcGIS\\bin', 'D:\\QGIS-Dev\\python25.zip', '', 'D:\\QGIS-Dev', 'C:\\Documents and Settings\\konsulat\\.qgis\\python\\plugins\\fTools\\tools'] Regards! D. Vasilev GIS-Sofia EOOD Bulgaria ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] the table manager for the trunk
Borys Jurgiel написа: Hi, Borys! I installed version 0.1.4. Installation was successful but when I tryed to use it I got an error: Try to reinstall the 0.1.4 once again. Now it should work. Yes, now it works fine. Regards! ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Any errors when installing plugins under XP ?
Tuesday 21 of October 2008 22:06:47 Tara Athan napisał(a): I am using a QGIS 1.0 windows build on XP. I am trying to install the Geoprocessor plugin. I get the error message Python error An error has occured while executing Python code: Traceback (most recent call last): File C:/Program Files/QGIS-Dev/./python/plugins\plugin_installer\installer_gui.py, line 202, in requestFinished un.extract(tmpPath, pluginDir) # final extract. File C:/Program Files/QGIS-Dev/./python/plugins\plugin_installer\unzip.py, line 29, in extract os.mkdir(dir) WindowsError: [Error 3] The system cannot find the path specified: u'C:/Documents and Settings/Tara/.qgis/python/plugins' Another words, it seems Pluigin Installer can't create missing directories (python/plugins). Has anybody else experienced such error? Unfortunatelly I can't replicate it, though I'm doing what only crosses my mind ;) The Installer always creates missing directories. Regards, B. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] QGis proxy settings
I have upgraded to revision 9552 and now my patch to QPHttp works. Cool, nice work guys. Hi! I've just uploaded Installer 0.06.6. Now it uses QGIS proxy settings from the options window (including login password). Could you test it? ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] iLocalize
hi list! A new translator is using (mainly?) iLocalize to translate (MacOS) Software. Now a few questions: Is it possible to use iLocalize for the QGIS Project on a Mac for translation? Does anyone have experience with it? Is it possible to get somewhat a live preview of Qgis during translation? (Like it seems to be possible with iLocalize) Is anyone translating using MacOSX and is able to give a brief description.. something like a HOWTO? thx in advance regards Werner ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Any errors when installing plugins under XP ?
2008/10/28 Borys Jurgiel [EMAIL PROTECTED]: Tuesday 21 of October 2008 22:06:47 Tara Athan napisał(a): I am using a QGIS 1.0 windows build on XP. I am trying to install the Geoprocessor plugin. I get the error message Python error An error has occured while executing Python code: Traceback (most recent call last): File C:/Program Files/QGIS-Dev/./python/plugins\plugin_installer\installer_gui.py, line 202, in requestFinished un.extract(tmpPath, pluginDir) # final extract. File C:/Program Files/QGIS-Dev/./python/plugins\plugin_installer\unzip.py, line 29, in extract os.mkdir(dir) WindowsError: [Error 3] The system cannot find the path specified: u'C:/Documents and Settings/Tara/.qgis/python/plugins' Another words, it seems Pluigin Installer can't create missing directories (python/plugins). Has anybody else experienced such error? Unfortunatelly I can't replicate it, though I'm doing what only crosses my mind ;) The Installer always creates missing directories. ... maybe you need to call os.makedirs() instead of os.mkdir() as it has to create first python and then plugins directory? Martin ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Any errors when installing plugins under XP ?
... maybe you need to call os.makedirs() instead of os.mkdir() as it has to create first python and then plugins directory? Martin Thanks. I've implemented it as an additional security. However it's not very elegant way... ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] proportional symbols
It seems to be a more common feature than I thought. Still I don't understand the use if this (I think double size should mean double population) but I guess I can live with the clutter. Goyo El lun, 27-10-2008 a las 23:21 +0100, G. Allegri escribió: It's very strange to me that it seams so strange to have proportional point size symbology on the base of attributes values. It's a basic feature of cartography... Some example references I can give: http://mapserver.gis.umn.edu/docs/howto/cartosymbols/#scaling-of-symbols http://demo.mapfish.org/mapfishsample/1.0/examples/geostat/proportionalSymbols.html http://www96.reliefweb.int/tools/details/geospatial-analysis/symbols-and-markers 2008/10/27 Goyo [EMAIL PROTECTED]: OK I read the ticket and I think I've got the point now. First of all you'll want to know that the lower size limit is gone in 1.0 but I don't think you're going to get good looking results with your data anyway. So you want to tell the sizes for maximum and minimum field values (whatever they are) and get the size for any value computed by linear interpolation. To be honest I don't see this useful enough (in general) as to justify the additional clutter in UI. On the other hand that's the way colormaps are handled in rasters, more or less. Just some thoughts. Goyo El lun, 27-10-2008 a las 21:49 +0100, Goyo escribió: Hi Giovanny, it scales the symbol size, not the attribute values. Since your attribute values are big you're getting big symbols. Goyo El dom, 19-10-2008 a las 21:15 +0200, G. Allegri escribió: I migrate here a discussion started in a ticket https://trac.osgeo.org/qgis/ticket/960 I change the question asking the following: how to make proportional symbols, i.e. with the size based on a certain attribute? I thought I should use the Area scale fields in the Properties window. It does the work, but it doesn't scale the sttribute values, so if the they are big the symbols overlay each other even covering the entire screen. I show two images about this: Property dialog: http://www.geospatial.it/allegri/property.png Result: http://www.geospatial.it/allegri/graduated.png I've used the lower allowed Dimension (=3)... Am I using a tool that wasn't supposed to do this work? Or am I using it in the wrong way? Giovanni ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] proportional symbols
Yes, it's very common, and in my field it's very useful too. For example it is used to visualize wells water chemical monitoring... 2008/10/28 Goyo [EMAIL PROTECTED]: It seems to be a more common feature than I thought. Still I don't understand the use if this (I think double size should mean double population) but I guess I can live with the clutter. Goyo El lun, 27-10-2008 a las 23:21 +0100, G. Allegri escribió: It's very strange to me that it seams so strange to have proportional point size symbology on the base of attributes values. It's a basic feature of cartography... Some example references I can give: http://mapserver.gis.umn.edu/docs/howto/cartosymbols/#scaling-of-symbols http://demo.mapfish.org/mapfishsample/1.0/examples/geostat/proportionalSymbols.html http://www96.reliefweb.int/tools/details/geospatial-analysis/symbols-and-markers 2008/10/27 Goyo [EMAIL PROTECTED]: OK I read the ticket and I think I've got the point now. First of all you'll want to know that the lower size limit is gone in 1.0 but I don't think you're going to get good looking results with your data anyway. So you want to tell the sizes for maximum and minimum field values (whatever they are) and get the size for any value computed by linear interpolation. To be honest I don't see this useful enough (in general) as to justify the additional clutter in UI. On the other hand that's the way colormaps are handled in rasters, more or less. Just some thoughts. Goyo El lun, 27-10-2008 a las 21:49 +0100, Goyo escribió: Hi Giovanny, it scales the symbol size, not the attribute values. Since your attribute values are big you're getting big symbols. Goyo El dom, 19-10-2008 a las 21:15 +0200, G. Allegri escribió: I migrate here a discussion started in a ticket https://trac.osgeo.org/qgis/ticket/960 I change the question asking the following: how to make proportional symbols, i.e. with the size based on a certain attribute? I thought I should use the Area scale fields in the Properties window. It does the work, but it doesn't scale the sttribute values, so if the they are big the symbols overlay each other even covering the entire screen. I show two images about this: Property dialog: http://www.geospatial.it/allegri/property.png Result: http://www.geospatial.it/allegri/graduated.png I've used the lower allowed Dimension (=3)... Am I using a tool that wasn't supposed to do this work? Or am I using it in the wrong way? Giovanni ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] More Projection Issues - Shapefile appears in wrong spot
Hello all, I've followed the posts and read the archives and cannot seem to find any solutions to my problem. I have a raster layer drg in NAD83 that seems to display in the correct spot. When I import custom shapefiles the points overlay in the correct spots relative to the raster. When I import a tiger file (shapefile, roads layer) from the census bureau, it will appear but not in the right spot. It appears as if the shapefile has the correct coordinates, but has been saved with the units as latlon. So instead of appearing at (35.944 degrees North, -83.2983 degrees East) it appears at (35.944 meters, -83.2983 meters). Does this make sense? Is there a simple fix to this? Also, not sure if it is a related issue, but I cannot change the project units in the project properties page. No matter which units I choose and then save, the next time I open the project properties page it is always back to meters. I have tried reinstalling several times and OTF has always been selected. I have also tried every conceivable combination of CRS es on each dataset, to see if I could get a wierd selection to make it magically appear to no avail. I have a WinXP machine and I have had the same problems in both QGIS 0.11.02 and in the Preview version 1.0. Thanks in advance for any help, -Jon L QGIS User ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
