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List:       pykde
Subject:    [PyQt] PyQwt and QwtPlotRasterItem
From:       Matti Lyra <matti.lyra () gmail ! com>
Date:       2010-08-31 15:44:12
Message-ID: 90E8582E-C345-4D9B-8140-BCFB39A69682 () gmail ! com
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I'm trying to add a raster element on top of a plot created with PyQwt but I get the \
following error when invoking the raster item constructor.

    self.crosshair = Qwt.QwtPlotRasterItem("path/to/img.png")

results in

    TypeError: PyQt4.Qwt5.Qwt.QwtPlotRasterItem represents a C++ abstract class and \
cannot be instantiated


I get the same error trying to load a JPEG or omitting the path altogether. It \
doesn't say in the Qwt docs that the class is abstract and in the PyQwt docs it says \
that the class is fully implemented.

[Qwt docs] : http://qwt.sourceforge.net/class_qwt_plot_raster_item.html
[PyQwt docs] : http://pyqwt.sourceforge.net/doc5/reference.html#PyQt4.Qwt5.QwtPlotRasterItem


What to do??




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