Opacity Control for Google Maps in official demo gallery

klokan@klokan.cz (Klokan Petr Přidal) — Mon, 03 Nov 2008 08:21:00 +0000

One of the results of the MapTiler/GDAL2Tiles is an extension of Google Maps API for new functionality related to tile overlays. In summer I created an Opacity slider control for Google Maps which lets the user drag a slider to change the transparency of a TileLayerOverlay on the map.

Recently I was contacted by Pamela Fox from Google and now she add my control to the official Google Maps API Demo Gallery.

I still should add similar control to OpenLayers, but till now there was no time for that unfortunately. The design of the control is finished (done in SVG in Inkscape, same as the Google one), so only the coding in JavaScript is missing. Christopher Schmidt from OpenLayers recommended to create a new OpenLayers Addin.

Google IP Geolocation

klokan@klokan.cz (Klokan Petr Přidal) — Tue, 26 Aug 2008 16:20:00 +0000

Google just published new AJAX API function ClientLocation for IP Geolocation.

This way you receive an JavaScript object with latitude and longitude and with address (city, region, country and country code) of your visitor.

It is cool and practical for use even without displaying Google Maps, as you can change behavior of your website according location of the visitor.

I wrote a typical example application Google IP Geolocation Map and Address which you can just copy and paste.

What IP database is Google practically using? Anybody knows? Is it their private or they are licensing one from another company?

Is the quality of IP geolocation better then free GeoLite City from MaxMind?

Klokan Technologies GmbH

Opacity Control for Google Maps in official demo gallery

Google IP Geolocation