Hi all I have been making further optimisations to the wxwidgets backen, as I have still been finding it painfully slow for plshade calls. It turned out that almost all the time within the backend (>99%) was spent selecting pens and brushes and allocating memory for every fill within the plshade call. Less that 1% was actually spent within the rendering call to wxWidgets. I have made some good improvements here.
However, in addition to this, about 50% of the total execution time is spent in the setlocale function. This is called before and after each polygon fill in the core plplot code. I wondered if anyone really knows the purpose of these calls? Perhaps they are to ensure we have consistent numeric representations across regions? If so, then I don't really understand why they are needed for polygon fills. Any thoughts would be welcome Phil
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