Exception running example

[kewp]

I'm getting the following exception trying to run one of the examples using the script given in README.md.

import matplotlib.pyplot as plt  # load matplotlib
from solidspy import solids_GUI  # import our package
solids_GUI()  # run the Finite Element Analysis
plt.show()    # plot contours

Karls-Mac-mini:square-4_elements karl$ python test.py
2017-09-20 20:09:04.489 Python[6413:174880] -[NSApplication _setup:]: unrecognized selector sent to instance 0x10422ce40
2017-09-20 20:09:04.491 Python[6413:174880] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[NSApplication _setup:]: unrecognized selector sent to instance 0x10422ce40'
*** First throw call stack:
(
0 CoreFoundation 0x00007fffc09a357b __exceptionPreprocess + 171
1 libobjc.A.dylib 0x00007fffd5c041da objc_exception_throw + 48
2 CoreFoundation 0x00007fffc0a23f14 -[NSObject(NSObject) doesNotRecognizeSelector:] + 132
3 CoreFoundation 0x00007fffc0916c93 forwarding + 1059
4 CoreFoundation 0x00007fffc09167e8 _CF_forwarding_prep_0 + 120
5 Tk 0x0000000107acec02 TkpInit + 471
6 Tk 0x0000000107a4a2a9 Tk_Init + 1794
7 _tkinter.so 0x0000000106f42bfd Tcl_AppInit + 77
8 _tkinter.so 0x0000000106f41336 Tkinter_Create + 966
9 Python 0x00000001000c2f7d PyEval_EvalFrameEx + 21485
10 Python 0x00000001000c4f93 PyEval_EvalCodeEx + 2115
11 Python 0x000000010003e990 function_call + 176
12 Python 0x000000010000cde2 PyObject_Call + 98
13 Python 0x000000010001f43d instancemethod_call + 365
14 Python 0x000000010000cde2 PyObject_Call + 98
15 Python 0x00000001000bc8c7 PyEval_CallObjectWithKeywords + 87
16 Python 0x000000010002272e PyInstance_New + 126
17 Python 0x000000010000cde2 PyObject_Call + 98
18 Python 0x00000001000c0c10 PyEval_EvalFrameEx + 12416
19 Python 0x00000001000c4f93 PyEval_EvalCodeEx + 2115
20 Python 0x00000001000c33c0 PyEval_EvalFrameEx + 22576
21 Python 0x00000001000c4f93 PyEval_EvalCodeEx + 2115
22 Python 0x00000001000c33c0 PyEval_EvalFrameEx + 22576
23 Python 0x00000001000c4f93 PyEval_EvalCodeEx + 2115
24 Python 0x00000001000c33c0 PyEval_EvalFrameEx + 22576
25 Python 0x00000001000c4f93 PyEval_EvalCodeEx + 2115
26 Python 0x00000001000c50b6 PyEval_EvalCode + 54
27 Python 0x00000001000e993e PyRun_FileExFlags + 174
28 Python 0x00000001000e9bda PyRun_SimpleFileExFlags + 458
29 Python 0x0000000100100bfd Py_Main + 3101
30 Python 0x0000000100000f14 Python + 3860
)
libc++abi.dylib: terminating with uncaught exception of type NSException
Abort trap: 6
Karls-Mac-mini:square-4_elements karl$

[kewp]

Oh I should mention I'm running on a Mac

[nicoguaro]

@kewp, we have seen the same error when trying to run SolidsPy from a terminal in Mac. I think that we should add that to the documentation, though.

If you are using Anaconda in Mac, I suggest that you run it through an Anaconda IPython console or Spyder.

[cosmoscalibur]

Some suggestion for fix can be found in:
About backend
Backend requiered is TkAgg and this is necessary to be set before import pyplot (best with rcParams).

• Matplotlib crashing on Mac OS X with solution #36.
• Matplotlib Crashing tkinter Application.
• The matplotlib FAQ.

About dependencies
libpng and freetype are required to be installed.

• Matplotlib not showing up in Mac OSX: Maybe this is not necessary if you install matplotlib with conda.