Re: [Qgis-developer] Map Canvas Current Zoomed Extent
Related to the second portion of my question regarding getting an image of the rendered canvas extent as an output i've tried to implement the following as modified from the pyqgis handbook from qgis.core import * from qgis.gui import * from PyQt4.QtCore import * from PyQt4.QtGui import * from PyQt4.QtXml import * output = r'C:\output.png' mc = iface.mapCanvas() rect = mc.extent() img = QImage(QSize(800,600), QImage.Format_ARGB32_Premultiplied) color = QColor(255,255,255) img.fill(color.rgb()) p = QPainter() p.begin(img) p.setRenderHint(QPainter.Antialiasing) render = QgsMapRenderer() render.setExtent(rect) render.setOutputSize(img.size(), img.logicalDpiX()) render.render(p) p.end() img.save(output,png) however the resulting image that I receive is simply a blank white image (from the im.fill step) in addition im not entirely sure how the size of the QImage can be related to the current extent rect? Again any help would be appreciated, Cheers, Bjorn -- View this message in context: http://osgeo-org.1560.x6.nabble.com/Map-Canvas-Current-Zoomed-Extent-tp5097678p5097818.html Sent from the Quantum GIS - Developer mailing list archive at Nabble.com. ___ Qgis-developer mailing list Qgis-developer@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-developer
[Qgis-developer] Processing Python Error on Startup
Hi, I have this error that keeps occuring and i've tried fixing it all afternoon but with no luck and its slowly driving me crazy. I tried to change the r scripts processing location to my r folder but after I changed those settings in the processing options I cant load the processing plugin! Somehow despite trying to delete every known qgis file and reinstalling either with the installer or through osgeo4w it keeps trying to create a folder in my R directory giving the error making me believe it somehow is remember that location somehow? temp PATH maybe? Couldn't load plugin processing due an error when calling its classFactory() method C:/PROGRA~2/QGISDU~1/apps/qgis/./python/plugins\processing\core\ProcessingUtils.py, line 97, in mkdir os.mkdir(newdir) WindowsError: [Error 123] The filename, directory name, or volume label syntax is incorrect: 'G:\\R-3.0.2\\scripts\r' I don't even really need R can I somehow prevent processing from even loading it? Any help would be appreciated, Cheers, Bjorn Couldn't load plugin processing due an error when calling its classFactory() method Traceback (most recent call last): File C:/PROGRA~2/QGISDU~1/apps/qgis/./python\qgis\utils.py, line 204, in startPlugin plugins[packageName] = package.classFactory(iface) File C:/PROGRA~2/QGISDU~1/apps/qgis/./python/plugins\processing\__init__.py, line 33, in classFactory return ProcessingPlugin(iface) File C:/PROGRA~2/QGISDU~1/apps/qgis/./python/plugins\processing\ProcessingPlugin.py, line 53, in __init__ Processing.initialize() File C:/PROGRA~2/QGISDU~1/apps/qgis/./python/plugins\processing\core\Processing.py, line 140, in initialize Processing.loadFromProviders() File C:/PROGRA~2/QGISDU~1/apps/qgis/./python/plugins\processing\core\Processing.py, line 151, in loadFromProviders Processing.loadAlgorithms() File C:/PROGRA~2/QGISDU~1/apps/qgis/./python/plugins\processing\core\Processing.py, line 174, in loadAlgorithms Processing.updateProviders() File C:/PROGRA~2/QGISDU~1/apps/qgis/./python/plugins\processing\core\Processing.py, line 158, in updateProviders provider.loadAlgorithms() File C:/PROGRA~2/QGISDU~1/apps/qgis/./python/plugins\processing\core\AlgorithmProvider.py, line 53, in loadAlgorithms self._loadAlgorithms() File C:/PROGRA~2/QGISDU~1/apps/qgis/./python/plugins\processing\r\RAlgorithmProvider.py, line 74, in _loadAlgorithms folder = RUtils.RScriptsFolder() File C:/PROGRA~2/QGISDU~1/apps/qgis/./python/plugins\processing\r\RUtils.py, line 55, in RScriptsFolder mkdir(folder) File C:/PROGRA~2/QGISDU~1/apps/qgis/./python/plugins\processing\core\ProcessingUtils.py, line 97, in mkdir os.mkdir(newdir) WindowsError: [Error 123] The filename, directory name, or volume label syntax is incorrect: 'G:\\R-3.0.2\\scripts\r' Python version: 2.7.4 (default, Apr 6 2013, 19:54:46) [MSC v.1500 32 bit (Intel)] QGIS version: 2.0.1-Dufour Dufour, 34139bc Python path: ['C:/PROGRA~2/QGISDU~1/apps/qgis/./python/plugins\\processing', 'C:/PROGRA~2/QGISDU~1/apps/qgis/./python', 'C:\\Users\\install.CIPR064108.000/.qgis2/python', 'C:\\Users\\install.CIPR064108.000/.qgis2/python/plugins', 'C:/PROGRA~2/QGISDU~1/apps/qgis/./python/plugins', 'C:\\PROGRA~2\\QGISDU~1\\bin\\python27.zip', 'C:\\PROGRA~2\\QGISDU~1\\apps\\Python27\\DLLs', 'C:\\PROGRA~2\\QGISDU~1\\apps\\Python27\\lib', 'C:\\PROGRA~2\\QGISDU~1\\apps\\Python27\\lib\\plat-win', 'C:\\PROGRA~2\\QGISDU~1\\apps\\Python27\\lib\\lib-tk', 'C:\\PROGRA~2\\QGISDU~1\\bin', 'C:\\PROGRA~2\\QGISDU~1\\apps\\Python27', 'C:\\PROGRA~2\\QGISDU~1\\apps\\Python27\\lib\\site-packages', 'C:\\PROGRA~2\\QGISDU~1\\apps\\Python27\\lib\\site-packages\\PIL', 'C:\\PROGRA~2\\QGISDU~1\\apps\\Python27\\lib\\site-packages\\win32', 'C:\\PROGRA~2\\QGISDU~1\\apps\\Python27\\lib\\site-packages\\win32\\lib', 'C:\\PROGRA~2\\QGISDU~1\\apps\\Python27\\lib\\site-packages\\Pythonwin', 'C:\\PROGRA~2\\QGISDU~1\\apps\\Python27\\lib\\site-packages\\wx-2.8-msw-unicode', 'C:\\PROGRA~2\\QGISDU~1\\apps\\qgis\\python\\plugins\\fTools\\tools'] -- View this message in context: http://osgeo-org.1560.x6.nabble.com/Processing-Python-Error-on-Startup-tp5082070.html Sent from the Quantum GIS - Developer mailing list archive at Nabble.com. ___ Qgis-developer mailing list Qgis-developer@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-developer
[Qgis-developer] OTB Configuration for Processing Toolbox
Hello, Has anyone configured a standalone OTB installation within the Processing toolbox before? I have tried to configure it in the following manner... OTB applications folder - ...\Monteverdi2-0.4\lib\otb\applications OTB Command line tools folder - ...\Monteverdi2-0.4\bin however everytime i try and run a script i receive the following error message '...\Monteverdi2-0.4\bin\otbcli_Segmentation' is not recognized as an internal or external command, operable program or batch file. Interestingly in my Monteverdi there is no file otbcli_Segmentation but rather otbapp_Segmentation so I do not know if that is the problem for me (i've tried to rename it though with no luck)? In addition I dont know if it should be running from the \bin folder considering that the .dll resides in the \applications folder. Any help would be appreciated, Cheers, Bjorn -- View this message in context: http://osgeo-org.1560.x6.nabble.com/OTB-Configuration-for-Processing-Toolbox-tp5081774.html Sent from the Quantum GIS - Developer mailing list archive at Nabble.com. ___ Qgis-developer mailing list Qgis-developer@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-developer
Re: [Qgis-developer] OTB Configuration for Processing Toolbox
Cheers, That was simple enough... however i've run into another problem which i hope is just as simple. Whenever i run an application with a vector output i receive the following error (this example from Mean Edision Segmentation). Segmentation -filter edison -in Users\INSTAL~1.000\AppData\Local\Temp\processing\73bc3696f1044433be48fa47d40f293b\-out.tif -filter.edison.spatialr 5 -filter.edison.ranger 15 -filter.edison.minsize 100 -filter.edison.scale 1 -mode.vector.stitch true -mode.vector.minsize 1 -mode.vector.simplify 0 -mode.vector.layername layer -mode.vector.tilesize 1024 -mode.vector.startlabel 1 -mode.vector.outmode ulco -mode vector -mode.vector.out C:\Users\INSTAL~1.000\AppData\Local\Temp\processing\601c72ba4790494694bbc4e28c6288ab\-mode vector -mode.vector.out.shp ERROR: option -mode.vector.out.shp does not exist in the application. This is the Segmentation application. (here it starts to describe the parameters for that application) Any ideas? Thanks Bjorn -- View this message in context: http://osgeo-org.1560.x6.nabble.com/OTB-Configuration-for-Processing-Toolbox-tp5081774p5081903.html Sent from the Quantum GIS - Developer mailing list archive at Nabble.com. ___ Qgis-developer mailing list Qgis-developer@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-developer
[Qgis-developer] Chain Temporary Algorithms
Hej Everyone, New to the mailing list here... and I am having some trouble writing a script that I was hoping someone could lend me a hand with. Mainly this is a script I use to get centerline's of a polygon that I used in ArcGIS before and I want to adapt it to work in QGIS. Anyways there are a sequence of algorithms from qgis that I want to use in memory before getting the final output as a series of points (which then need to be processed further) however chaining these algorithms simply fails after the first one where the output is simply not being created for the next step to process. Here is a snippet of that code - any help would be appreciated! Cheers, Bjorn #Definition of inputs and outputs #== ##[Example scripts]=group ##Polygon=vector ##Detail=number 1000 ##Scale=boolean True ##All_Paths=boolean False ##Output=output vector #Algorithm body #== import sextante as st densify = st.runalg(qgis:densifygeometries),inFC,Detail,None) extractNodes = st.runalg(qgis:extractnodes,densify,None) voronoi = st.runalg(qgis:voronoipolygons,extractNodes,None) voronoi_lines = st.runalg(qgis:polygonstolines,voronoi,None) polygon_lines = st.runalg(qgis:polygonstolines,inFC,None) clip = st.runalg(qgis:clip,inFC,voronoi_lines,None) out = st.runalg(qgis:difference,clip,polygon_lines,None) layer = st.getobject(out) features: = st.getfeatures(layer) Points = [] for feature in features: Points.append(features.geometry().asMultiPolyline()) -- View this message in context: http://osgeo-org.1560.x6.nabble.com/Chain-Temporary-Algorithms-tp5069057.html Sent from the Quantum GIS - Developer mailing list archive at Nabble.com. ___ Qgis-developer mailing list Qgis-developer@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-developer
