Beautiful Watershed Polygons in QGIS
As the title sugests I am showing you, how to create beautiful watershed polygons. We will start with some raster files and use a nice GRASS tool for…
Tag: raster
Create A Raster Layer Index With QGIS And GDAL
When working with raster datasets, it is hard to keep an overview of the raster files in use and their coverage. Most raster data providers may keep metadata…
Short Announcement: “Quality Check” on SRTM1
Well, I was expecting this. Damn, those new SRTM1 raster files provided via EarthExplorer by the USGS are sweet. You can download them right away just by creating…
Raster Comparison using ArcGIS
In one of the biggest groups of geoscientists in Germany, Austria and Switzerland the question arose how to do a raster comparison in ArcGIS. I’ve already mentioned some…
regular spaced points… interpolation madness…
The geodata department of the city of Berlin offers a great portfolio of free geodata for everyone to use. One dataset is the result of some LIDAR measurements…
reproject and filetype change in python/pyqgis for QGIS plugin
In my current work on the qgis2leaf plugin I had the idea to place raster data on a leaflet map as an image overlay. With this in mind…
short announcement: TopoToolbox 2: Geomorphometry made easy in MATLAB
< p align=”justify”>Digital elevation models (DEMs) exist today for the entire globe with consistent quality. Improvements in sensors and data processing give a clue that in the future…
OpenSource QGIS + PostGIS installation: “the Windows way”
A short time ago I’ve posted an article on the installation of QGIS in combination with a PostGIS database in the background. As we all know, Windows is…
Free Sources of Geospatial Raster Data
I’m always looking for good sources of free data, so I thought I would post a few here in case they were useful to others. The sources listed…
Map Projections, spatialreference.org and gdalwarp
Map Projections The question of map projections and how to reproject data is one that comes up often in discussions with both experienced colleagues and those new to…
QGIS Plugins – Point Sampling Tool
Previous posts in this series QGIS Plugin – RasterCalc QGIS Plugin – OpenLayers Point Sampling Tool I have recently been working on a project that has required the…
The End of the Landsat 5 Era
If you have been working in the space remote sensing community for any length of time you have almost certainly crossed paths with Landsat 5. After 29 years…