I had a great semester working with my students using desktop, server, and developer tools with Free and Open Source Software for...

In my previous post, I showed how my GIS students were able to adapt to QGIS as a desktop GIS, and also the model building capabilities...

In my last post, I showed that my lower level undergraduate students were performing quite well in their online transition, when learning...

We're now about 6 weeks into our experiment of transitioning our University instruction to an online environment. Because we...

I just started working with the Time Manager plug-in with QGIS to create an animation of recent COVID-19 deaths in Maryland: The map...

Due to the COVID-19 virus, many of our schools are struggling to turn their courses into online delivery. I just found out that our...

Due to the COVID-19 virus, many of our schools are struggling to turn their courses into online delivery. I too am getting my courses...

If you're like me, you've enjoyed using the ESRI Tutorial Building a Geodatabase. It's a great tutorial that steps students through some...

If you are like me, you love writing spatial SQL. But what can you do if you have a geodatabase, some shapefiles, or any other data...

Previously, I blogged about creating bivariate maps with Postgres, and Arcpy. Pretty cool stuff, check it out! But, to be honest even...

In my previous post, I showed how to create a model in QGIS – I think that was pretty cool! But, as I say over and over, SQL is even...

Did you know that QGIS can design graphical models, similar to the way Model Builder in ArcGIS works? The following video is taken from...

Technical and Detailed. Great teacher explanation. Really good! Practical advice, in-depth enough to really learn something useful (most...

In my previous post, I showed how to prepare the data for a bivariate choropleth map using PostGIS and QGIS. I also indicated that there...

A friend recently asked me about the cool looking bivariate maps produced with ArcOnline, lamenting that the capability seemed lacking...

I just got off the phone with a very large developer. I want to call him a GIS developer, but really that’s not was he does. Rather, he...

A friend is doing some research on estrogen and estrodial in water samples in Delaware. We have about 50 sub-watersheds that show the...

As promised, let’s walk through the code I wrote to create the multiprocessing of my Postgres/PostGIS task.  You may recall that I said...

NYC taxi cab pickup locations for October, 2012 OK, let’s cut to the chase: I used Python’s parallel processing capabilities with...

two successful Keeping Up with GIS Technology workshops out in Denver.  This was a week mixed with sadness and joy: sadness in that my...