Andrew Zolnai Blog

In my ongoing suite of posting webmaps in my new and fresh Mind the Map blog, here is another take on loading global vectore megadatasets b...

My previous post on this topic stated how careful documentation and appropriate metadata high-grades any information that is shared online ...

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

Happy New Year! Don't you think that 175 blog posts and almost 150,000 page views over 7.5 years merit a catalog of my maps? This a...

It took five days (after hours) to stand up, learn, tweak and display my East Anglia Fenlands project on Mapcentia's web service . It st...

Here are some free datasets useful for petroleum mapping. Links didn't transfer in SlideShare so here they are: AAPG GIS Open Files

[ Update 2 : this map gallery is now the first pane of my personal portfolio ] [ Update 1: Apple iOS doesn't support Flash, please try...

[ Update: this was summarised into a story map here  posted also on this blog here ] Two years then one year ago I QC'd UK Ordnanc...

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

... at least in oil&gas. I always wondered why petroleum was only 5% Esri's market (unofficial from my tenure as petroleum manager t...