[Octave-bug-tracker] [bug #45600] fonts displayed too small in gl-based plots

[Pantxo Diribarne]

Follow-up Comment #13, bug #45600 (project octave):

Matlab seems to have adopted a fixed value of the "screenpixelsperinch"
property (see [1]) for Windows and Mac platforms. Note that this makes this
"pixels" unit device independent (an absolute unit). 

The only reason I can see is Matlab has made the (unfortunate?) choice of
fixing the default figure size in pixel units. Having pixels an absolute unit
is thus a way to fix the absolute size of figures across different displays.
This also means that for ML compatibility we should follow the same route.
Another good reason to do so is that, at least for Mac, Qt also chose device
independent pixels [2].

The drawback of this approach is that it is not WYSIWYG: a figure onscreen
will never have the expected physical size in inches (which is the default
unit for "paperposition"). There are complaints about this regression on
Matlabcentral [3].

Finally opening a new bug report about this inconsistency is probably the way
to go. Harmut can you do it or do you want me to?


[1] https://fr.mathworks.com/help/matlab/ref/root-properties.html
[2]
http://blog.qt.io/blog/2013/04/25/retina-display-support-for-mac-os-ios-and-x11/
[3] https://fr.mathworks.com/matlabcentral/newsreader/view_thread/344106

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