(q)uit does not work correctly in a DV3D interactive canvas (exits python)

[jypeter]

I don't know if this has been reported yet. It's something we saw with @chaosphere2112 when I was visiting PCMDI

When you are in interactive mode and type 'q' in a DV3D canvas, the script will completely exit python when you only want to continue the script or go back to the interpreter

The following example (run it with python -i script.py) opens both a 3D and a classical 2D canvas and shows that 'q' works as expected when you use it in the 2D canvas, but not in the 3D canvas

#!/usr/bin/env python

# A simple script showing that the 'q'uit command in a DV3D canvas
# will exit python, when it should only go back to the interpreter
#
# Use: python -i this_script.py
#
# J-Y Peterschmitt - LSCE - 01/2015

import vcs, cdms2, sys

# Canvas with a 3D plot
print 'Creating a simple 3D plot canvas...\n'

x = vcs.init()
f = cdms2.open(sys.prefix+"/sample_data/clt.nc")   
v = f("clt", time=slice(0,10))
dv3d = vcs.get3d_scalar()
x.plot( v, dv3d )

# Canvas with a default 2D plot
print '\nCreating a simple 2D plot canvas...\n'
y = vcs.init()
y.plot(v)

# Enter the interactive mode, then try to quit it to go back to the
# interpreter
print '\nEntering the interactive mode...'
print 'Typing "q" in the 3D canvas will exit python => NOT good :('
print 'Typing "q" in the 2D canvas will go back to the interpreter => GOOD! :)\n'
x.interact()

# The end

[jypeter]

@ThomasMaxwell Do you think you can do something about this? It was a bit annoying, when making my tests to report #1155 to have to restart python each time I quit the interact mode in a dv3d canvas

[ThomasMaxwell]

I have implemented a fix for this in branch vcs3D-return_to_shell_on_q_keypress_event (PR #1157). After the ‘q’ key is pressed control returns to python and one can generate another plot ( staring with ‘vcs.init()’ ).

From: Jean-Yves Peterschmitt <notifications@github.commailto:notifications@github.com>
Reply-To: UV-CDAT/uvcdat <reply@reply.github.commailto:reply@reply.github.com>
Date: Thursday, March 19, 2015 at 6:25 PM
To: UV-CDAT/uvcdat <uvcdat@noreply.github.commailto:uvcdat@noreply.github.com>
Cc: "Maxwell, Thomas P. (GSFC-606.2)[SCIENCE APPLICATIONS INTL CORP]" <thomas.maxwell@nasa.govmailto:thomas.maxwell@nasa.gov>
Subject: Re: uvcdatuit does not work correctly in a DV3D interactive canvas (exits python) (#953)

@ThomasMaxwellhttps://github.com/ThomasMaxwell Do you think you can do something about this? It was a bit annoying, when making my tests to report #1155#1155 to have to restart python each time I quit the interact mode in a dv3d canvas

—
Reply to this email directly or view it on GitHubhttps://github.com//issues/953#issuecomment-83785515.

[jypeter]

Thanks!

[doutriaux1]

@ThomasMaxwell it appears to still be here or to be back in (dv3d vector)

In [21]: x.plot(dv3d,s,s)
Warning, can't open data file 'None'
Warning, transient variable clt already exists in dataset, overwriting!
 Can't get Metadata for var __zeros__!
Sample rate: 6 
Sample rate: 6 
 Update Text Display:  Level: 0.00 
initCamera: Camera => ((0.0, 0.0, 540.0), (0.0, 0.0, 0.0), (0.0, 1.0, 0.0)) 
Out[21]: <vcs.displayplot.Dp at 0x1149c4230>

In [22]: x.interact()
/lgm/uvcdat/2.2.0/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/vcs/VTKPlots.py:87: UserWarning: Press 'Q' to exit interactive mode and continue script execution
  warnings.warn("Press 'Q' to exit interactive mode and continue script execution")
 saved state data to file  <closed file 'DV3D/data/state.txt', mode 'w' at 0x114c1b4b0>
doutriaux1@lapetitechipie:[Packages]:[release*]:[5869]> 

Pressed Q and went back to the terminal prompt