Hi, Le 19/10/2012 06:48, Jae-Joon Lee a écrit : > Figuring out the dpi of the screen, I have no clue at this moment. > Maybe this is something a gui expert can answer. I'm certainly not a gui expert, but as a PyQt user, I know screen resolution is indeed Python-accessible with PyQt. (I guess other toolkits provide their own methods)
I've made a quick script that prints the screen X and Y resolution (requires PyQt). Reference links to PyQt API docs are included. In my case, it's 96 dpi, and that what I use in my matplotlibrc file for the "figure.dpi" property. But I use a higher value (say 150) for "savefig.dpi" so that I get better resolution when saving PNG images. I agree with Nikolaus that the dpi value for displaying figures would be better get by the software, if possible. Maybe a property like figure.dpi='auto' should activate such a behavior. But this would require many code duplicates, one for each gui toolkit. Best, Pierre
#!/usr/bin/python # -*- coding: UTF-8 -*- """ Diplay the Screen resolution information from PyQt References ----------- http://www.riverbankcomputing.co.uk/static/Docs/PyQt4/html/qapplication.html#desktop http://qt-project.org/doc/qt-4.8/qapplication.html#desktop http://lists.trolltech.com/qt-interest/2008-08/thread00258-0.html Pierre Haessig â October 2012 """ import sys from PyQt4.QtGui import QApplication app = QApplication(sys.argv) desktop_widget = app.desktop() print('Screen resolution:') print('%d x %d DPI' % (desktop_widget.physicalDpiX(), desktop_widget.physicalDpiY() ))
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