Hi Arnaud,
Thanks for your answer.
I tried directly with Google Charts and, indeed, I had the same error. So,
the issue is not owing to xwiki but to Google Charts. In fact, I discovered
that Google Charts has a maximum formula length of 200 characters. Perhaps
someone could add it to the documentation of Formula Macro. Because, when we
exceed this maximum with {formula} macro, nothing tells us that we switch on
SnuggleTex renderer.
Marine.
> Hello,
>
> I known nothing about Tex, but did you try your formula directly with
> Google Charts with some tools like curl or made a test page based on
> http://code.google.com/intl/fr/apis/chart/docs/post_requests.html
> When you are able to made it directly, then you can retry with {formula}
> macro.
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