As the years passed, I came out with a number of other documents in the series: How do I do that in Manifold SQL, How do I do that in...

GIS Programming students presented their programming projects to ESRI. First, I cannot say enough to thank ESRI for taking time out of...

I thought I would show you how I’ve been working with my students in my GIS Programming class, and showing them SQL, Python, and ArcGIS....

I love using forms in Manifold GIS to rapidly create applications for users.  Sure, you can create world class forms and applications...

Most of you know, I love spatial SQL.  I also love PostGIS and ArcGIS – can’t we just all get along?  Well, yes we can.  In this case,...

This is something I’m sure many of you already know, but it was new to me, so I figured that I’d share it here.  My student, Carl Flint,...

I’ve always been proud of our Salisbury University GIS students, and love to push them as far as their little minds can handle it.  You...

This review of made by a former student, Brady Woods.  Brady is a GIS Analyst, and after taking my Open Source GIS course, he immediately...

A seminar on spatial SQL at Stirling University (October 31) A lightning talk at the 6th Annual QGIS User Group Meeting (November 3) A...

Have you ever sat in a lecture and been totally confused?  I know I have.  I wished the Professor would either slow down, or that I had a...

It’s been awhile since I’ve done any Manifold stuff, so I thought I would show you how to break up a vector file based on a unique...

Just thinking out loud here.  I’ve always been bothered by the complexity of Moran’s I.  Actually, it’s not complex, it’s just math....

On the Manifold GIS discussion board, someone asked about updating a polygon layer with the distance of the farthest pair of vertices for...

Today my students got to present some of their work at the Maryland Geographic Information Committee Quarterly meeting.  On Monday we...

This summer I am working with three talented undergraduates as part of a National Science Foundation (NSF) program called Research...

Just wanted to announce that there are now 6 online gisadvisor.com courses for learning GIS along with the coupon codes for a discounted...

Once again, I am continuing my role as a mentor in a National Science Foundation (NSF) Research Experience for Undergraduate program....

We are now into our 4th week of my Open Source GIS class at the University of Maryland at College Park.  We’ve covered desktop GIS with...

CLICK TO VIEW Jeff Scarmazzi presenting on h0w to create editing rules and triggers using Postgres and PostGIS Today I want to introduce...

The Open Source Implementation This is a continuation of Mark Balwanz’s blog posts on his creation of web mapping sites using both ESRI...