RE : [matplotlib-devel] constrained zoom

> -----Message d'origine-----
> De : mat...@li...=20
> [mailto:mat...@li...] De la=20
> part de John Hunter
> Envoy=E9 : lundi 26 juillet 2004 21:26
> =C0 : mat...@li...
> Objet : [matplotlib-devel] constrained zoom
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> One more thought on interactive zoom.  As I was trying out=20
> the interactive zoom (not zoom to rect, but right click on=20
> pan zoom) on some image data, I noticed that it would be=20
> useful to have some constraints on the zoom
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>   - zoom only on x.  Already the x zoom is determined by the amount of
>     movement in the horizontal direction, but it would be nice to be
>     able to ignore the y direction.  Candidate key modifier: 'x'
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>   - zoom only on y.  ditto. Candidate key modifier: 'y'
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>   - preserve axes aspect ratio.  Candidate key modifier: ??.  I think
>     some apps use a SHIFT or a CTRL modifier for this.  Is there any
>     consensus or common practice?

Yes, this will be very usefull! Add the group of axis (all of them react
to pan/zoom/zoom_to_rect of any of them, and it would be the ultimate
plot navigation tool :-) I go for shift for the last one (could even do
the 3 in one, kind of like power point snap to grid, except grid would
be 0/45/90 direction. I think powerpoint and many drawing program (adobe
illustrator, corel draw) act like that :-)