UMD provided me with enrollment numbers, and we are getting a pretty full class.  However, a few people on the “outside” have asked for a...

This is a continuation of Mark Balwanz’s blog posts on his creation of web mapping sites using both ESRI and Geoserver.  Today he will...

Also, notice the title says Arcserver AND Geoserver, not Arcserver VS. Geoserver!!  This isn’t a competition or a benchmark.  It is one...

This summer I was asked to teach a 10 week course on Open Sourc Master of Professional Studies in Geospatial Information Sciences...

I am putting up a new course on udemy.com about learning GDAL – and, it is going to be FREE.  I’ve been so happy with the uptake and...

our merry band of 12 undergraduate GIS students presenting their research posters at SUSRC. Today was the Salisbury University Student...

Well, even though you didn’t ask for it, I decided to create a k-nearest neighbor analysis in PostGRES/PostGIS.  This has lots of...

I wanted to give you another look at some features that Radian Studio will offer. I’ve shown how we can use SQL to replicate the ARC/INFO...

How I used SQL to generate an accumulated sum of spatial data My friend Tomas does work with business analytics, and wanted to find a way...

A friend recently asked me to help him generate polyline shapefiles with Z and M values that he could deliver to a customer.  The problem...

My Dad passed away this morning. It is an odd feeling, because no matter how old you are, Dad is still Dad. He was my best friend, and...

Just yesterday, a Professor wrote: I use your textbook for our required “Statistical Research Methods in Geography” course at [Name of...

Merry Christmas and Happy Holidays to all of my friends.  Today, Manifold announced their procedures for participating in the beta for...

It has been awhile since I’ve done anything with the gisadvisor.com site.  I was waiting for a new release of Manifold GIS.  For now,...

One of the best things about working at a University is that I get to work with some of  the best colleagues – not only are they...

In my statistics class, I was helping the students understand the difference in one, two, and three or more sample (ANOVA) tests.  When...

Many of you know that I have been working with parallel processing for GIS in the form of video card general purpose, graphical...

I found a mistake in the How do I do that in PostGIS book on page 4.  When updating a field with results from a related table, I...

As most of you know, I am a big fan of spatial SQL.  It is my go-to tool whenever working with GIS.  But, I have seen too many people...

My good friend Stuart Hamilton gave me a fun conundrum to try out. He has a file of province boundaries (400 areas) and lidar derived...