Andrew Zolnai Blog

Here are the maps promised at the end of the last post  c/w description in that post:

Esri just updated its World Vector Basemaps (v.2) . I updated below the notoriously complex and details Aalan Archipelago offshore Turku, Fi...

Last week was the inaugural post of my catalog , highlighting maps from this blog in (very) roughly reverse chronological order. The second...

More and more free data are available that are quality-controlled and verifiable. Guardian Data Blog 's @smfrogers (now at Twitter) was ...

[ Update: ESRI blog post here for clear explanation and treatment of same, thanks Eileen Buckley! See also my ArcGIS Online / Amazon Web ...

[Update 2:  layer package can now be found as  Teapot Dome Six Pack  on  PUG Online Update: RMOTC was sold off in 2015, their ftp site is ...

Satellite imagery has been around for almost as long as GIS, and the following may just make them so easy they finally gain momentum. The sa...

[ Update 2 :   thanks Greg Cocks for this  April 2019   update Update 1: Part III , more on plate boundary earthquakes] A year ago today...

Two anecdotes on remote sensing and environmental monitoring highlight some issues in measuring and predicting the current Gulf of Mexico oi...

Here the latest from bp itself at the current NOC show in London.

Building geoinfo from the ground up is patent in this Gov2.0 presentation on citizen-focussed geoweb at the Greater New Orleans Community ...

Eyjafjallajoekull volcanic ash blown southeastward caused air traffic disruption last week over the northern British Isles again. I post the...

I posted earlier an example of a simple Google Map reading a list of Olympic cities - this was part of a list of Google and OpenLayer maps ...

I spent a summer in the Arctic in 1986 , the year as Barry Lopez wrote a book titled as above. At a recent job in Kazakhstan, I met ice en...