Archive for 'GIS'
Merge Subdirectories of Shapefiles Using OGR
As a follow-up to my post “Merge A Directory of Shapefiles Using OGR,” I came across a similar problem today. I had a bunch of data in subfolders inside a parent folder. I wanted to merge all of these shapefiles into one, without manually moving them into a single directory (and since they all had [...]
Posted: May 18th, 2010 under GIS.
Comments: none
Merge A Directory of Shapefiles Using OGR
Here’s something that may seem obvious to power users of GDAL/OGR, but not to those that are just new to using these great free tools. This is something that I use on an almost daily basis, and works when a lot of other options (QGIS, Kosmo, etc.) seem to fail. Essentially, this sequence of commands [...]
Posted: May 7th, 2010 under GIS.
Comments: 4
“It’s Turtles All The Way Down”
All I can say is that Paul Ramsey is a genius. This is the best presentation I’ve seen in a long time, so despite it being posted elsewhere, I’m posting it here again anyway: Why Your Data Sucks Please upgrade your browser
Posted: April 9th, 2010 under GIS.
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OSM/Potlatch Easter Egg for Easter Weekend
Happy Easter for all of you out there celebrating! For those that aren’t; enjoy the time off work if you get it. I know I will! Matt and I spent some time the other night playing with Open Street Map, updating roads in the Perth area, and just generally investigating how it works. Using Potlatch [...]
Posted: April 2nd, 2010 under GIS.
Comments: none
Never Underestimate the Humble Spatial Index
This is more a reminder to myself than anything else, but will be a good reminder for everyone out there in OSGEO land. When performing any geoprocessing task in QGIS, don’t forget to build a spatial index first. It really does help! Save the hours of frustration and waiting by clicking that one little button! [...]
Posted: March 31st, 2010 under GIS.
Comments: 1