Digital Geography

Some ways to produce topographic swath profiles

For a geomorphological study that I am working on I want to produce topographic swath profiles across a mountain range, that is, I want the average elevation along a profile plus the min and max values within a certain distance of said profile. I have used three different methods to achieve that and found some nice resources that I’d like to share with you: GMT – Generic Mapping Tools GMT is a powerful suite of command-line small programs to manipulate all kinds of geographic data (Wessel and Smith, 1998; Wessel et al., 2013). A walk through on how to produce…

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 below tend to be larger providers of regional to global level data, however, please post suggestions in the comments if there are other sources you like and think should be added. I had initially planned to include vector data here, but I think that will be another post as this one got quite long. SAR Data Free Synthetic Aperture Radar data can be some of the hardest to find, but it is…

QGIS Plugins — OpenLayers

Click for previous article in this series about RasterCalc How often have you been working on a project in QGIS and wanted some nice background imagery, perhaps for a quick and dirty evaluation of your own data? I find I need this with growing frequency and a great way to do it is through the OpenLayers plugin for QGIS. Of course, if you know of a good WMS for your area of interest you can always go that route, but the OpenLayers plugin is a great addition to your QGIS toolbox. The OpenLayers plugin is available through the official QGIS…

LTE: Link to Earth OS

LTE is the new OS available in a beta version for all geoscientists and interested fellows. But stay calm… There is a huge need for scientists, students and institutions for reliable, free and well documented programs in geo-related applications. So what’s better then to use Ubuntu. Actually this is a good solution as Ubuntu provides not only the biggest Linux distribution but also one with special releases called LTS which stands for Long Term Support. So you can be sure to use it longer than only two years… But one downpart was the implementation of other geo-related software. There was…