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Thread: QPainter; Setting correct coordinatesystem

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  1. #1
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    Default Re: QPainter; Setting correct coordinatesystem

    wgs84 is coordinates on sphere, you need to transform all the points to x,y coordinates
    I have my own library to read and draw SHAPE files.
    I use QWidget to draw primitives and it very fast for me. For example, about 500 000 points(points, polylines, polygons) and it takes about 0.5 sec to draw. QgraphicsView was too slow.
    for coordination transformation i use proj.4.

  2. #2
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    Question Re: QPainter; Setting correct coordinatesystem

    Is it possible to share your library ang usage to display shapefile.

    Swapan

  3. #3
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    Default Re: QPainter; Setting correct coordinatesystem

    Hi folibis,
    till I am failed to display shape file. Can you please help me by supplying source code.

    Swapan

  4. #4
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    Default Re: QPainter; Setting correct coordinatesystem

    yes I could..........

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