Hi
I'm trying to save an image from QGIS master with python:
img = QImage(QSize(width, height), QImage.Format_ARGB32_Premultiplied)
img.setDotsPerMeterX(dpi / 25.4 * 1000)
img.setDotsPerMeterY(dpi / 25.4 * 1000)
color = QColor(255,255,255)
img.fill(color.rgb())
p = QPainter()
p.begin(img)
p.setRenderHint(QPainter.Antialiasing)
render = QgsMapRenderer()
render.setLabelingEngine(QgsPalLabeling())
render.setLayerSet(lst)
render.setExtent(rect)
render.setOutputSize(img.size(), dpi)
render.render(p)
p.end()
img.save("/tmp/"+filename+".png","png")
It seems that the dpi parameter in render.setOutputSize(img.size(), dpi) is not
respected. For any value of dpi the line width is always the same in the output
raster. It it respected when using map units for line widths and not
milimeters, though. The script was used in an older QGIS version ages ago. So
I'm pretty sure it worked once. Did I miss something or is it a bug?
Regards
Stefan
Freundliche Grüsse
Stefan Ziegler
Kantonsgeometer
Amt für Geoinformation
Amtliche Vermessung
Rötistrasse 4
4500 Solothurn
Telefon +41 32 627 75 96
Telefax +41 32 627 75 98
[email protected]
http://www.so.ch
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