Andrew Zolnai Blog

The last 6 blog posts over the last 3 months chronicled the use of dynamic maps using time attribute - years for historic ship tracks and wi...

Earlier posts chronicled the history  even the beauty of historic shipping and climate data from CLIWOC. British, Dutch, French and Spanis...

I showed recently  how CLIWOC weather data from ships captains logs dating 1662 to 1885 totalled almost 1/2M points. It started with a 1/4M ...

[ Update1 : longhand version posted on my map catalog blog Update 2 : companion Slideshare  delves into technical issues] This is the end...

Last month related the stumbling blocks in posting too much data on arcgis.com - time animation pushed the limits of stock web service even...

Last month I reported on posting on arcgis.com some time-stamped, time-slider or time-aware maps - I showed my WhereIsAndrew map - I also m...

I tell people "I know just enough java to be dangerous", and it has served my well in my prior attempts logged in my old web page ...

A 'handy' is what Germans call a mobile or cell phone. I uploaded free ArcGIS for Android on my  smartphone, which now has a decent ...

[ Update:  Part II is on my Medium professional channel 2½ year later: Almost open data ] A lot of (virtual) ink has flowed around opening...

Three months into posting data on my web service - Part V - I created a short list of free data for Great Britain on my Map Catalog called ...