It is also available today a new update (v 2.1.0) of GE-Graph.
Make bars graph
Make graph with geometrical shapes (circles, squares, triangles, etc).
Set the shape size according to each placemark value
Also set the shape color according to a placemark value
Graph's title and color scale as GE screen overlays
Different choice of label content (place name and/or value)
Different color scales to be chosen
Paste files from other applications (Word, Excel, Access,...)
Export data to Excel
Sort and filter placemark data (coordinates, names and value
New:
-Save file as kmz
Images for the color scale and graph title and the kml files are saved in a single zipped file
-Choose minimum and maximum values for color scale
If your input file is too large you can split it in several smaller files keeping the same color scale for each one.
-Transform values to square root