For example, A .tiff file of 400*200 size, I can read it as a 2-D array(400 x 200) in python. I want to change the tiff size to 200 x 100 or other ratio. How to realize that in Python or GIS soft...

Is there any open source alternative for Zonal Statistics tool (ArcGIS Spatial Analyst)? What is the best tool (which I can use in script) dor counting statistics of raster files?

What do I need to do to upgrade an existing Qt4 application to work with retina displays on OS X? The Qt blog says that Qt 4.8 "has good support, and backports of some of the Qt 5 patches are ...

I am now have a shape file and I want to add value to fill it with color but now I have a problem http://www.qgis.org/pyqgis-cookbook/vector.html#add-features feat = QgsFeature() feat.addAttri...

So, I've been following Mike Bostock's tutorial on creating a map. To create the subunits.json GeoJSON file using ogr2ogr and ne_10m_admin_0_map_subunits.shp (which is the input) I typed: ogr2ogr...

Does India have a .geoJSON file? I want to make data visualization using d3.js for the states, cities and hence need the GEOJSON File representing India. Where should I start from or what should be...

I tried to make a plugin on qgis with Python 2.7.3 and there is a error happend and I find a way to install bsddb3 to replace bsddb but when I try $sudo easy_install bsddb3 it's give ...

Does anyone know if there's support for WMS-T in QGIS? Through the app I can add WMS layers, but I can't work with WMS-T (there's no place to set the time parameter). I been going through the the...

I have created for my plugin a start GUI with 3 buttons. This works very well and if I click on one of the buttons a specific action is started. So far this works. If I click on one of the buttons ...

I am working on Python26,pyqt4 designer and QGIS. My code file (.py file)contains this: import sys from PyQt4 import QtGui, QtCore from qgis.core import * from qgis.gui import * but when i t...