Tagmap is a Views style plugin. We made a text marker API which we use to display a geo-coded tag cloud over Google Map.
There are two possibilities: to display taxonomy terms, or display previously imported external data.
The module provides admin settings page for some basic options. Some of them can be overridden with views style plugin options.
As additional possibility user can use cluster-marker to refine the display.
To be able to use this option you have to put file markerclusterer_packed.js (from http://gmaps-utility-library.googlecode.com/svn/trunk/markerclusterer/1....
) in the js directory.
You can also use the Clusterer to group several close markers together. This library hasa nice feature to list previously defined number of markers in every given cluster.Just go to
http://www.acme.com/javascript/Clusterer2.jsm (for packed version, rename it to Clusterer2.js) or
http://www.acme.com/javascript/Clusterer2.js (for human-friendly version)
and save the Clusterer2.js file in the js directory.
This module's main purpose is to visually present location related data where exact geographical borders are not available or where underlying geographical data need to be preserved. The module can accept numerical data either from an external source or from counting nodes (through taxonomy).
DRUPAL 7 notes: