Questions tagged [sextante]
Spatial data processing framework historically utilized in QGIS pre-version 2.0. As of 2016, Sextante is now called Processing and has become a core feature of QGIS 2.0 and can be enabled by turning on processing. The sextante plug-in for QGIS is now officially deprecated.
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Couldn't load plugin sextantelwgeomprovider, QGIS 2.0.1 on Ubuntu 14.04.2
I'm getting this error message when I start QGIS
Couldn't load plugin sextantelwgeomprovider due an error when calling its classFactory() method
Traceback (most recent call last):
File "/...
- 21
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0
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Removing pseudo-nodes using QGIS Sextante plugin?
I have a road network (vector) that i'm interested in carrying out some space syntax analysis on.
Predictably my GIS data is in a pretty terrible state. For example, there are a bunch of roads on the ...
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1
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Last SEXTANTE (Processing) update results in missing RScripts examples
I have installed today the new version of the Processing plugin on QGIS 2.8 (on Windows 7 x64) and I cannot anymore find the RScripts example that were available (and functioning) before the udpate. ...
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QGIS algorithms do not work on copies of shapefiles?
I'm using QGIS 2.6.0. I'm trying to run various algorithms such as "SAGA/Shapes-points/remove duplicates" & "SAGA/Shapes-Grid/Add grid values to points" through the sextant toolbox.
When I run ...
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SAGA not working within sextante when QGIS processing installed in Ubuntu? [closed]
Recently i decided to start working in Ubuntu (version 14.04). My first step was to add the ubuntugis-unestable repository, and then proceed to install SAGA, GRASS, OTB, QGIS and the bindings between ...
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1
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Change QGIS Processing (Sextante) default arguments for r.out.gdal
Lately I've been using r.grow through the QGIS Processing Toolbox on several rasters which represent the whole world with 500m grid spacing. It takes many minutes to save the output. The reason seems ...
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1
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Superimpose OTB application via Sextante cannot load parameter
I am trying to perform a pansharpening using OTB via sextante. According to the cookbook I first need to superimpose the Pan and XPS images:
http://www.orfeo-toolbox.org/CookBook/CookBooksu36.html
...
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1
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Iterating over selected features in QGIS Processing
I used to be able to iterate over selected features using the following script in v2.0.
import processing
features = processing.getfeatures(layer)
for feature in features:
#Do whatever you need ...
- 23
1
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1
answer
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Using R scripts with sextante processing framework?
I want to use R scripts from the module Sextante treatment QGIS , but I have many difficulties to configure the module in Sextante . Following the procedure described in the official documentation of ...
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Converting models from QGIS to Python scripts?
I want to automate some tools for QGIS 2.0.2 using Python.
Previously I have used ArcMap for automating tools and now i want to use QGIS.
In ArcMap I used the ModelBuilder, and more specifically the ...
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2
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Finding AniMove in QGIS 2.x? [duplicate]
I've just upgraded to Valmiera in QGIS, the only way to do spatial analyses appears to be with the experimental AniMove plugin (?) which is not appearing in my GUI.
Can anyone tell me where to find ...
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1
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How to install OTB/Sextante plugin on QGis 2.0 (OSX)
I remember the Sextante plugin used to be available for my previous version of QGis. When I got a new computer however, I downloaded QGis again and got 2.0. Searching for "Sextante" or "OTB" yields no ...
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Sextante plugin
I'm looking for the sextant plug-in which is supposed to be showing in Plugin Manager under Manage and Install plugins. I currently have 30 plugins installed and enabled in QGIS 2.0 and 121 more ...
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Error running SEXTANTE in QGIS on Scientific Linux
I've installed SEXTANTE into qgis on my Scientific Linux machine and I am getting the following when attempting to run Warp;
INFO|Mon Feb 24 2014 15:56:20|GDAL execution console output|/bin/sh: ...
- 93
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3
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How to access shapefile table in QGIS Modeler R scripts?
I need to develop .rsx scripts for QGIS 2.0.1 Modeler to do statistical elaborations on data tables of loaded vector layers.
In this case I am not interested in accessing shapefile geometries, I'd ...
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1
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Help interpreting Moran's I and Geary's C results
I've got some doubts about how to interpret some results for a work. And I) would like someone could confirm or improve my conclussions.
I made a correlation analysis with SEXTANTE software in gvSIG. ...
- 975
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2
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2k
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Unable to load 'nviz' through GRASS
I am using QGIS 2.0.1-Dufouron on Windows 7. When I try to load nviz via GRASS, I get the message "Module nviz not found". Weirdly enough, I can load it via the toolbox and be able to 'run' it (it ...
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How to use ggplot with Processing in QGIS 2.0?
I'm trying to use R scripts within QGIS thanks to Processing. There are some example scripts available and I achieved to plots different columns of the attribute table (with the plot built-in package)....
- 3,274
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Calculating longest flow path and avg. slopes for catchments with QGIS
I am a hydrologist and there are 2 important pieces of information I need for modeling. I need to know the longest flow path for each sub catchment in my area of interest and I need to know the ...
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1
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Atmospheric Corrections for Landsat 8 OLI Using Orfeo Toolbox
I am trying to correct some Landsat 8 OLI imagery using the Orfeo Toolbox Optical Calibration tool via QGIS. I've retrieved data from Aeronet as well as relative spectral response data for the OLI ...
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How to get the direction raster from r.walk or r.cost
I am trying to use r.cost and r.walk and r.drain to calculate the shortest path from an archaeological site to the nearest basalt source. I am using all this algorithms with the processing toolbox (I ...
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How to load memory output from QGIS processing?
Many processing algorithms have an option to save output as memory. If ran from toolbox, this works fine, because you can tick the "Open output file after running algorithm" box.
Looking at the ...
user23603
2
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1
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315
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How to handle plugins of two different QGIS installations on the same computer
I have a computer with 2 versions of QGIS. Both versions are running on Win 7 64 bits with 16 Mb of ram. One is Dufour 32 bits and the other one is version 2.1 OSgeo4W 64 bits.
I am experimenting ...
- 3,002
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1
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Using in-memory vector layer with QGIS processing / SEXTANTE
I'm trying to run the qgis:clip algorithm from console, but am getting an error when using an in-memory layer as the overlay parameter. Is this to be expected, or am I doing something wrong?
Code:
...
user23603
7
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1
answer
3k
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How to select features based on multiple values in graphical modeler?
I'm trying to create a basic model using QGIS, the QGIS graphical modeler and the sextante toolbar. In part of the model, I need to select features based upon multiple attribute values (for example - ...
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1
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Is it possible to create and run custom R scripts in QGIS 2.0?
I am new to QGIS and most of the tutorials I have found are for 1.x and the overhaul has me confused.
I would like to create R scripts and run them in QGIS. I have read here that it's possible using ...
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0
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Problems with SEXTANTE
maybe the answer is somewhere, but i can't find it right now... I'm getting problems with SEXTANTE and algorithms with GRASS, SAGA...
Always is the same, they can't open the files, the error is the ...
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Access all plugin from QGIS Modeler (Sextante)
I read that it is not possible to access to all of the installed QGIS plugins from the Graphical Modeler (QGIS 2.0.1).
It would be great, in defining the model in the Graphical Modeler, if the user ...
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votes
1
answer
307
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fTools "Join Attributes by Location" missing in SEXTANTE/Processing Toolbox
I am working with the new Processing Framework in QGIS 2.0.1.
I really like the graphical modeler, because it allows my to make my own tools without having to be able to write pyhton or any other ...
user14956
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votes
2
answers
3k
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Installing qgis 2.0 and saga 2.1 on ubuntu 13.04
I have been trying to get this working for a few weeks now. I am trying to install QGIS Dufor (2.0.1) and Saga GIS from the Unstable branch of the UbuntuGIS PPA. When I attempt to do this I get the ...
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2
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How to link R script to Algotithm output in QGIS modeler?
I constructed a simple R script for QGIS modeler (.rsx) that calculates groupwise summary statistics of a vector layer table (sum by field "subject" and "FRC").
The script correctly works. When ...
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votes
1
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291
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grass algorithms no longer run in QGIS/Sextante [closed]
I used to be able to run GRASS algorithms in QGIS 2.0 via Sextante (Ubuntu 12.04) but not anymore. Initially I would double click on any grass algorithm and the execution would stop with:
"...
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Where can I find a good Sextante Modeller tutorial?
I'd like to enrich my knowledge of the Sextante Modeller. Do you have any good suggestion of a book/workshop etc. to dig into the modeller?
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How can I refer to a model variable in a Field Calculator or Pyculator formula?
I am new to QGIS 2.0.1 Modeler (Sextante) and not very able in Python programming.
My question regard the use of field calculator (or advanced python field calculator) inside the modeler.
Is it ...
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votes
2
answers
804
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Access Sextante (processing) in standalone QGIS app?
Sextante is addressable via python using the QGIS python console (unfortunately not from outside QGIS). I´m writing a standalone app and want to include Sextante geoprocessing functionality. In QGIS ...
- 1,263
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2
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825
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How to use SEXTANTE in a script outside QGIS?
I´m trying to do some geoprocessing using the QGIS Sextante plugin outside of the QGIS application (and integrate it with different other libraries like arcpy, etc.).
import sys, os
from PyQt4.QtGui ...
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0
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SEXTANTE Saga-grid normalisation and KBS
I tried to use the saga tool grid normalisation. The result is ok but the KBS has changed. Is this an error?
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GRASS v.rast.stats missing in SEXTANTE toolbox
I am new in the QGIS world and also with GRASS. I am really interested in using v.rast.stats as it is doing exactly what I need. My problem is that I am not able to find it inside SEXTANTE in QGIS and ...
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How to install Sextante in QGIS 1.8 without Plugin Installer?
How can I install sextante (and where can I download it) if the Plugin Installer doesn't works?
As I work for a corporation, I have some problems conecting to the official repository, and I cannot ...
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Setting "R Folder" Path in QGIS Sextante
I have installed R via the R-Project website. I have QGIS installed via OSGEO4W (currently 1.9.0 Master), and have Sextante plugin installed and working with GRASS and SAGA providers. I am now trying ...
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1
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Instructions for installing Sextante plugin
As a follow-up to the question I recently asked on PyQGIS, can someone please point me to a document, webpage or thread that provides me with step-by-step instructions as to how to install an external ...
- 1,193
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351
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Tools in the Sextante toolbox in QGIS 1.8 for interpolation?
What tools in the Sextante toolbox in QGIS 1.8 can be used for interpolation (kriging and spline)?
I have looked at every single one and could not figure it out.
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10k
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How to clear attribute columns from a Shapefile?
I want to clear all columns from a SHP. Only need geometry of features. I use QGIS and Sextante with grass and saga. Is there any tool for this job...
- 607
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2
answers
207
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Sextante modeler feature selection
I am trying to select grids (polygon geometry) that intersect with a building layer. I can do it by using "Select by location" tool and then I generate centroids from the selected grids. There is no ...
- 607
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votes
1
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Grass algorithms do not appear in Sextante toolbar of QGIS
I was having problems with some sextante algorithms in my QGIS 1.8, something related with wrong "os" name, I found a post in which reccomend to install the 1.9 master version.
I clean uninstalled ...
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GIS Maximum area coverage problem
I want to find optimum antenna location for an area. Every antenna can cover an circular area. These areas diameter is 750meter. So how can i find minimum number of antennas and locations.
NOTE: I use ...
- 607
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1
answer
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Problem executing Mean Shift Segmentation: could not open the output layers
I have a problem executing the Mean Shift Segmentation in QGIS with Orfeo Toolbox. I put all the parameter to execute and then, nearly 5s after appear the message that SEXTANTE could not open the ...
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votes
2
answers
2k
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saga & grass configuration in sextante (ubuntu)
I have some trouble in running saga and grass algorithms in sextante. When I double click it appears a pop-up saying:
Missing dependency.This algorithm cannot be run :-(
This algorithm requires SAGA ...
- 3,274
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0
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Sextante Modeler Error "global name os is not defined" [duplicate]
I want to generate a model whic reclassify radter values. So i added Saga reclassify grid values tool to Modeler and saved the model. When i run the model i got this error both on Ubuntu OSgeolive 6.0 ...
- 607
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2
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1k
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SAGA, GRASS Raster values to null
I want to make the cells which values "1" to null in QGIS with Grass or Saga tools (exactly Saga).
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