But I still think the plain canvas approach uses less cpu

Oh, I totally agree. If the graph is only ever to be displayed in Tk, and not re-used as an image elsewhere, a Canvas does make sense.

That said, GD::Graph does do some stuff with scaling and ticks, labels and pie-charts that are not trivial to reproduce.

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
Lingua non convalesco, consenesco et abolesco. -- Rule 1 has a caveat! -- Who broke the cabal?
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

In reply to Re^4: Which tk to use and how to show images? by BrowserUk
in thread Which tk to use and how to show images? by Sinatra

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