gscreen breaks with import matplot
03 Aug 2022 13:40 #248932
by thadwald
gscreen breaks with import matplot was created by thadwald
Hi
I am trying to use metplotlib for displaying a simple automated/guided CAM solution in gscreen (linuxcnc 2.8.2)
Following metplotlib tutorial, for using metplot with gtk2, I try the following line:
gscreen fails with the following error:
I suspect that maybe the import statement references gtk3 libraries but this is just a guess.
Any suggestions?
I am trying to use metplotlib for displaying a simple automated/guided CAM solution in gscreen (linuxcnc 2.8.2)
Following metplotlib tutorial, for using metplot with gtk2, I try the following line:
from matplotlib.backends.backend_gtk import FigureCanvasGTK as FigureCanvasgscreen fails with the following error:
2
Traceback (most recent call last):
File "/usr/bin/gscreen", line 4661, in <module>
app = Gscreen()
File "/usr/bin/gscreen", line 792, in __init__
self.initialize_widgets()
File "/usr/bin/gscreen", line 1086, in initialize_widgets
self.init_dro_colors()
File "/usr/bin/gscreen", line 1196, in init_dro_colors
self.widgets.abs_colorbutton.set_color(gtk.gdk.color_parse(self.data.abs_textcolor))
File "/usr/bin/gscreen", line 228, in __getattr__
if r is None: raise AttributeError, "No widget %r" % attr
AttributeError: No widget 'abs_colorbutton'I suspect that maybe the import statement references gtk3 libraries but this is just a guess.
Any suggestions?
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03 Aug 2022 14:06 #248933
by thadwald
Replied by thadwald on topic gscreen breaks with import matplot
I have also tried
I get the same results
from matplotlib.backends.backend_gtkagg import FigureCanvasGTKAgg as FigureCanvasI get the same results
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03 Aug 2022 22:40 #248981
by andypugh
Replied by andypugh on topic gscreen breaks with import matplot
This looks like a funny one, maybe a namespace clash, for example.
Just as a check, if you comment-out the import matplot.... Does it all work again?
Just as a check, if you comment-out the import matplot.... Does it all work again?
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04 Aug 2022 00:06 #248990
by thadwald
Replied by thadwald on topic gscreen breaks with import matplot
Yes. It works fine with the other matplot import. It appears to be the gtk one that causes the problem.
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04 Aug 2022 01:17 - 04 Aug 2022 01:20 #248992
by cmorley
Replied by cmorley on topic gscreen breaks with import matplot
have you tried your import just in a python session?
Gscreen some times hides the real error.
Did you check the terminal or is that error from the dialog box?
The terminal usually shows more.
But I would confirm the library imports all by it's self first.
You can also wrap a try statement around it:
then look in the terminal.
Gscreen some times hides the real error.
Did you check the terminal or is that error from the dialog box?
The terminal usually shows more.
But I would confirm the library imports all by it's self first.
You can also wrap a try statement around it:
try:
from matplotlib.backends.backend_gtk import FigureCanvasGTK as FigureCanvas
except Exception as detail:
print (detail)then look in the terminal.
Last edit: 04 Aug 2022 01:20 by cmorley.
The following user(s) said Thank You: thadwald
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04 Aug 2022 01:39 #248994
by thadwald
Replied by thadwald on topic gscreen breaks with import matplot
Thank you. There is actually an issue with the import statement and, like you said, gscreen was hiding it.
I have been running from terminal precisely to see these errors but this one didn't show up until explicitly trapped.
Thanks again!
I have been running from terminal precisely to see these errors but this one didn't show up until explicitly trapped.
Thanks again!
The following user(s) said Thank You: cmorley
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04 Aug 2022 13:16 - 04 Aug 2022 13:19 #249035
by thadwald
Replied by thadwald on topic gscreen breaks with import matplot
Follow-up
The root cause was that pip installs matplotlib by default without GTK C extensions.
using:
forces it to build the binaries, which then include the required GTK parts.
The root cause was that pip installs matplotlib by default without GTK C extensions.
using:
pip install matplotlib --no-binary=matplotlibforces it to build the binaries, which then include the required GTK parts.
Last edit: 04 Aug 2022 13:19 by thadwald.
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