Bug handling directory names

[dschaeffer17]

For some reason, DataView crashes when trying to save images to a directory named something like "run34.01"

Traceback (most recent call last): File "/Users/dereks/Documents/GitHub/dataview/dataview/dataview.py", line 1328, in runMovie self.saveMovieFrame(ax_name, i) File "/Users/dereks/Documents/GitHub/dataview/dataview/dataview.py", line 1292, in saveMovieFrame self.figure.savefig(saveframe) File "/anaconda3/lib/python3.7/site-packages/matplotlib/figure.py", line 2094, in savefig self.canvas.print_figure(fname, **kwargs) File "/anaconda3/lib/python3.7/site-packages/matplotlib/backends/backend_qt5agg.py", line 88, in print_figure super().print_figure(*args, **kwargs) File "/anaconda3/lib/python3.7/site-packages/matplotlib/backend_bases.py", line 2075, in print_figure **kwargs) File "/anaconda3/lib/python3.7/site-packages/matplotlib/backends/backend_agg.py", line 521, in print_png cbook.open_file_cm(filename_or_obj, "wb") as fh: File "/anaconda3/lib/python3.7/contextlib.py", line 112, in __enter__ return next(self.gen) File "/anaconda3/lib/python3.7/site-packages/matplotlib/cbook/__init__.py", line 407, in open_file_cm fh, opened = to_filehandle(path_or_file, mode, True, encoding) File "/anaconda3/lib/python3.7/site-packages/matplotlib/cbook/__init__.py", line 392, in to_filehandle fh = open(fname, flag, encoding=encoding) FileNotFoundError: [Errno 2] No such file or directory: '/Users/dereks/Desktop/Research/Experiments/2019/LAPD 09-19/Analysis/Movies/run34/time_0.00.png'

[pheuer]

I've had issues with filenames with periods in them in general: using "run34_01" or something similar should resolve the issue temporarily until we figure out where it causes a problem.