geospatial things and stuff

Working on a large 4 county area around Houston, TX. Wanted a single image to analyze parcel data to do a vacant land analysis.  This is a t...

After mosaicing all the Travis county DEMs (10meter) you can see the abrupt white squiggles that represent areas that have NoData. After r...

This is a slope analysis. It's fairly simply to produce in ESRI ArcGIS.  Download the elevation data and process it using the Spatial A...

QGIS is open source GIS at it's most user friendly state.   GRASS is a more powerful open source GIS suite that's been in developm...

A few counties in Texas are very user friendly and keep their our data online and update frequently. Tarrant County is very good about t...

This was my first stab at creating a heat map of drive times based off a network of streets. I chose to populate a speed limit field with k...

One of the many things I do is make public information requests for permit data from cities and counties. Then geocode and aggregate them a...