I am using Google motion-charts in a web-site developed in python/django. Is there a way to save the rendered view of a google motion-chart as an image (server-side)?
For the more basic chart types - such as scatter diagrams - the command chart.download('scatter-random-marker-sizes.png')
works fine, but I have not found an equivalent for motion charts.
You can't (they are all flash). but you can save and restore the state of a visualization you create (it's saved in a string, which you could store locally). See Setting Initial State in the doc:
http://code.google.com/apis/visualization/documentation/gallery/motionchart.html
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