Draw points on curve with different symbols
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#75 Draw points on curve with different symbols
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nobody
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5
2015-07-11
2015-07-11
Anonymous
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Hello! I am using Qwt and my intention is to fit the curve with my own algorithm.
So I have a "regular" points and that ones which are calculated by the algo based on info of "regular" points. I want regular points to be drawn with a certain symbol and calculated - without symbol (i.e. just a dot). I know of QwtCurveFitter class, but it does not fit (huh) for me because fitCurve method does provide only QPolygonF. My algorithm requires more than just x and y coordinates and this is handled by my own point class and QwtSeriesData<qpointf>-based class. My request is to add an ability to draw certain points with one symbol, and others with another - just like QwtCurveFitter does but using my data structures.</qpointf>
My suggestion is to return a pair <qpointf, qwtsymbol=""> as a result of sample() method in QwtSeriesData so that the samples would be drawn accordingly. </qpointf,>
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