Problem saving a plot

[kalos80]

Hi,

I'm saving a plot to an image file using the QwtPlot print function.
The problem is that the saved image has a bad black margin (see the image attached).

This is the code I'm using to save the plot image. I'm using Qt 3.3.7 on Windows

void MyPlot::savePlot(const QString &sOutputFilename, int w, int h)
{
	// get the plot pixmap
	QPixmap plotPxm(w, h);
	print(plotPxm);
 
	plotPxm.save(sOutputFilename, "PNG");
}

void MyPlot::savePlot(const QString &sOutputFilename, int w, int h)
{
	// get the plot pixmap
	QPixmap plotPxm(w, h);
	print(plotPxm);

	plotPxm.save(sOutputFilename, "PNG");
}

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How can I solve the problem?

Thank you in advance for your help.

[Uwe]

a) I recommend to export into better formats like PDF or SVG ( without using a pixmap in between).
b) Your pixmap is not initialized. Add plotPxm.fill(...) before you print on it.

HTH,
Uwe

[kalos80]

Uwe, Thank you very much for your hint, it works!

I tried to save the plot is SVG and it looks better, but unfortunatly I need to save it as a JPEG/PNG image, so I have to leave it the way it is now.

Thanks again!