How to specify the x-y rotation point when using animateTransform?

Question

I want to use animateTransform to rotate an SVG image continuously. So here we go:

Answer 1

http://www.w3.org/TR/SVG/animate.html#AnimateTransformElement

The ‘from’, ‘by’ and ‘to’ attributes take a value expressed using the same syntax that is available for the given transformation type:
(...)
For a type="rotate", each individual value is expressed as [ ]

You can specify the center for the rotation if you provide 2 additional values, cx and cy.

So, for your piece of code, I add "50 50" in the "from" and "to" attribute :

It work with latest version of Opera, Safari and Chrome, also Firefrox 4 Beta and Batik.