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Why not get the same clear image on a high-resolution screen? #10235
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what version of Matplotlib, what backend, and what OS?
@tacaswell Matplotlib: 2.1.1, Python: 3.6.4, OS: Windows 10 16299
Not only pictures, but also the toolbar is not clear.
Can you tell the difference? The second picture is much cleaner, with dpi = 300
Can you try with qt5agg instead of tkagg? (add import matplotlib; matplotlib.use("qt5agg") at the very top of your script; you may need to install pyqt5 from conda or pypi.)
On master: tkagg is blurry. qt5agg is sharp (150%, 200% tested). Holds for icons and plot itself.
I think this is essentially a duplicate of #10388. Even though this issue was opened first I'll close it as there is more discussion on the other.
Feel free to reopen if you think a separate issue is warranted.Actually let's keep this open for discussing the Windows case because the solution is likely OS-specific...
@timhoffm (or anyone else, for that matter) If you have a high-dpi screen available to testing on Windows, can you try calling one of https://docs.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-setprocessdpiaware https://docs.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-setprocessdpiawarenesscontext in tkagg.cpp? (e.g. at the top of PyInit__tkagg)
(also https://bugs.python.org/issue33656 suggests how to do this with ctypes)
My screen resolution is 2k, dpi zoom 200%
For example:
This is the picture displayed after running
And this is an image saved with dpi = 300
My point is that gui applications are not ideal for displaying on high-resolution screens.