#317 y-axis gets reversed on zoom

[Mike Sutton]

The y-axis gets reversed upon zooming for the following:

set view map
plot sin(x)

Now zoom in and check the y-axis. This may be related
to bug 1042785.

Gnuplot version is 4.1 (CVS snapshot on 11/28/2005) on
Linux with x11 terminal.

I thought that set view only applied to splot commands.

[Ethan Merritt]

Logged In: YES
user_id=235620

Good thing cvs makes it so easy to back-track through
previous versions. Turns out the bug was introduced here:

2004-10-11 Petr Mikulik <mikulik@physics.muni.cz>
* src/mouse.c (apply_zoom): Fix for reversed y-range
in zoom by mouse
and "set view map".

[Petr Mikulik]

Logged In: YES
user_id=31505

Thanks for finding that exact patch which introduced this
problem. It needed (is_3d_plot && splot_map) instead of
(splot_map). I have fixed it in cvs.

[Ethan Merritt]

Logged In: YES
user_id=235620

Re-opening this one, because there is still a glitch here.
Test procedure:

plot sin(x)
# zoom with mouse
set view map
splot x
# hit "u" key in plot window

The y axis is now reversed, and remains reversed even with
subsequent replot or splot commands

[Petr Mikulik]

Logged In: YES
user_id=31505

I hope I have fixed even this case. Please try it. If you
find any other problem, reopen this issue again.