Re: [Qgis-developer] External calls to SEXTANTE?
Hi everyone, I'm still hoping to get this working. Below is a sample script I would like, but the GRASS call via SEXTANTE does not produce an output or raise any errors, although it does print the help for the function. Any suggestions? Thank you, Martin import sys import os sys.path.append(/usr/share/qgis/python/plugins) sys.path.append(os.getenv(HOME)+/.qgis/python/plugins) import PyQt4 import sextante import qgis import qgis.utils def main(): app = PyQt4.QtGui.QApplication(sys.argv) qgis.core.QgsApplication.setPrefixPath(/usr/lib/qgis, True) qgis.core.QgsApplication.initQgis() sextante.core.Sextante.Sextante.initialize() run_script(qgis.utils.iface) def run_script(iface): this shall be called from Script Runner sextante.alglist() sextante.alghelp(grass:r.los) dem = sys.argv[1] out_uri = sys.argv[2] x = sys.argv[3] y = sys.argv[4] sextante.runalg(grass:r.los, input=dem, coordinate=,.join(x,y), output=out_uri) if __name__==__main__: main() On Tue, May 28, 2013 at 2:41 PM, Victor Olaya vola...@gmail.com wrote: Definitely that sounds interesting, and I guess that SEXTANTE is a right choice for reimplementing your ideas. about calling algorithms from python, if you are mainly going to use GRASS ones, you can probably do it without SEXTANTE, but using SEXTANTE will allow you to get more functionality. I would suggest you to start by writing a simple SEXTANTE algorithm that calls the algorithms needed for you model. I could help you on that, and then we can see how to maybe take it out of the normal QGIS/SEXTANTE framework to allow it to be executed without the full QGIS GUI (I uderstand that is what you are looking for) feel free to contact me if you need more help 2013/5/28 Martin Lacayo mlac...@stanford.edu: Hi Filipe and Victor, Yes, I am part of the software team working on InVEST. I am currently working on transitioning the aesthetic quality (viewshed) model from our 2.0 ArcGIS dependent framework to a 3.0 ArcGIS independent framework. Part of our 3.0 framework is a standalone QT based GUI, for which we hope to enable command line calls (see issue 813 in our repository invest-natcap.googlecode.com) eventually, but it currently set to a medium priority. I understand that once that is working it would be fairly simple to add a wrapper in SEXTANTE, right? There are a lot of factors that go into the development decisions for InVEST, so while I can't say specifically that there is a plan to bring InVEST to QGIS, but the changes we are making should make that very possible. In the meantime, I am faced with the challenge of transitioning the aesthetic quality model away from ArcGIS with the hopes that SEXTANTE can address this and other geoalgorithms needs. Any insight or advice would be much appreciated. Thank you, Martin On Tue, May 28, 2013 at 1:51 PM, Filipe Dias filipesd...@gmail.com wrote: Hi, you are working on InVest right? If so, have you considered making InVest inside Sextante Toolbox? In CC I'm copying Victor Olaya, who is the main developer of Sextante so he can help with that. As a QGIS user it's very exciting for me to know that you are working on bringing Invest into QGIS. Regards Filipe Dias On Tue, May 28, 2013 at 7:43 PM, Martin Lacayo mlac...@stanford.edu wrote: Hello, I would like to make external calls to SEXTANTE with a Python script or via the command line. I'm interested in using all the geoalgorithms, but in particular I am interested in the GRASS geoalgorithms, and specifically in r.viewshed at this moment. Is this possible? I found this post which seems very close to answering the question: http://gis.stackexchange.com/questions/28701/how-to-run-sextante-algorithms-outside-of-qgis-python-console/60725#60725 However when I try calling sextante.runalg I get an error seemingly related the fact that the code is not being run inside the QGIS Python console (qgis.utils.iface is None). Our FOSS software (naturalcapitalproject.org) is developed on Linux but packaged for Windows. Any suggestions or advice? We are hoping to reduce our development time and eliminate duplicated efforts. Thank you, Martin ___ Qgis-developer mailing list Qgis-developer@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-developer ___ Qgis-developer mailing list Qgis-developer@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-developer
[Qgis-developer] External calls to SEXTANTE?
Hello, I would like to make external calls to SEXTANTE with a Python script or via the command line. I'm interested in using all the geoalgorithms, but in particular I am interested in the GRASS geoalgorithms, and specifically in r.viewshed at this moment. Is this possible? I found this post which seems very close to answering the question: http://gis.stackexchange.com/questions/28701/how-to-run-sextante-algorithms-outside-of-qgis-python-console/60725#60725 However when I try calling sextante.runalg I get an error seemingly related the fact that the code is not being run inside the QGIS Python console (qgis.utils.iface is None). Our FOSS software (naturalcapitalproject.org) is developed on Linux but packaged for Windows. Any suggestions or advice? We are hoping to reduce our development time and eliminate duplicated efforts. Thank you, Martin ___ Qgis-developer mailing list Qgis-developer@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-developer
Re: [Qgis-developer] External calls to SEXTANTE?
Hi, you are working on InVest right? If so, have you considered making InVest inside Sextante Toolbox? In CC I'm copying Victor Olaya, who is the main developer of Sextante so he can help with that. As a QGIS user it's very exciting for me to know that you are working on bringing Invest into QGIS. Regards Filipe Dias On Tue, May 28, 2013 at 7:43 PM, Martin Lacayo mlac...@stanford.edu wrote: Hello, I would like to make external calls to SEXTANTE with a Python script or via the command line. I'm interested in using all the geoalgorithms, but in particular I am interested in the GRASS geoalgorithms, and specifically in r.viewshed at this moment. Is this possible? I found this post which seems very close to answering the question: http://gis.stackexchange.com/questions/28701/how-to-run-sextante-algorithms-outside-of-qgis-python-console/60725#60725 However when I try calling sextante.runalg I get an error seemingly related the fact that the code is not being run inside the QGIS Python console (qgis.utils.iface is None). Our FOSS software (naturalcapitalproject.org) is developed on Linux but packaged for Windows. Any suggestions or advice? We are hoping to reduce our development time and eliminate duplicated efforts. Thank you, Martin ___ Qgis-developer mailing list Qgis-developer@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-developer ___ Qgis-developer mailing list Qgis-developer@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-developer
Re: [Qgis-developer] External calls to SEXTANTE?
Definitely that sounds interesting, and I guess that SEXTANTE is a right choice for reimplementing your ideas. about calling algorithms from python, if you are mainly going to use GRASS ones, you can probably do it without SEXTANTE, but using SEXTANTE will allow you to get more functionality. I would suggest you to start by writing a simple SEXTANTE algorithm that calls the algorithms needed for you model. I could help you on that, and then we can see how to maybe take it out of the normal QGIS/SEXTANTE framework to allow it to be executed without the full QGIS GUI (I uderstand that is what you are looking for) feel free to contact me if you need more help 2013/5/28 Martin Lacayo mlac...@stanford.edu: Hi Filipe and Victor, Yes, I am part of the software team working on InVEST. I am currently working on transitioning the aesthetic quality (viewshed) model from our 2.0 ArcGIS dependent framework to a 3.0 ArcGIS independent framework. Part of our 3.0 framework is a standalone QT based GUI, for which we hope to enable command line calls (see issue 813 in our repository invest-natcap.googlecode.com) eventually, but it currently set to a medium priority. I understand that once that is working it would be fairly simple to add a wrapper in SEXTANTE, right? There are a lot of factors that go into the development decisions for InVEST, so while I can't say specifically that there is a plan to bring InVEST to QGIS, but the changes we are making should make that very possible. In the meantime, I am faced with the challenge of transitioning the aesthetic quality model away from ArcGIS with the hopes that SEXTANTE can address this and other geoalgorithms needs. Any insight or advice would be much appreciated. Thank you, Martin On Tue, May 28, 2013 at 1:51 PM, Filipe Dias filipesd...@gmail.com wrote: Hi, you are working on InVest right? If so, have you considered making InVest inside Sextante Toolbox? In CC I'm copying Victor Olaya, who is the main developer of Sextante so he can help with that. As a QGIS user it's very exciting for me to know that you are working on bringing Invest into QGIS. Regards Filipe Dias On Tue, May 28, 2013 at 7:43 PM, Martin Lacayo mlac...@stanford.edu wrote: Hello, I would like to make external calls to SEXTANTE with a Python script or via the command line. I'm interested in using all the geoalgorithms, but in particular I am interested in the GRASS geoalgorithms, and specifically in r.viewshed at this moment. Is this possible? I found this post which seems very close to answering the question: http://gis.stackexchange.com/questions/28701/how-to-run-sextante-algorithms-outside-of-qgis-python-console/60725#60725 However when I try calling sextante.runalg I get an error seemingly related the fact that the code is not being run inside the QGIS Python console (qgis.utils.iface is None). Our FOSS software (naturalcapitalproject.org) is developed on Linux but packaged for Windows. Any suggestions or advice? We are hoping to reduce our development time and eliminate duplicated efforts. Thank you, Martin ___ Qgis-developer mailing list Qgis-developer@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-developer ___ Qgis-developer mailing list Qgis-developer@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-developer