RuntimeError: Invalid DISPLAY variable

[cmagness]

monitors side of things crashes when trying to produce plots

full traceback:

Traceback (most recent call last):
File "/user/cmagness/miniconda3_linux/envs/monitors/bin/cm_monitors", line 11, in
load_entry_point('cosmo-peewee==0.0.1', 'console_scripts', 'cm_monitors')()
File "/user/cmagness/miniconda3_linux/envs/monitors/lib/python2.7/site-packages/cosmo_peewee-0.0.1-py2.7.egg/cosmo_peewee/database/ingest.py", line 764, in run_monitors
osm_monitor()
File "/user/cmagness/miniconda3_linux/envs/monitors/lib/python2.7/site-packages/cosmo_peewee-0.0.1-py2.7.egg/cosmo_peewee/osm/monitor.py", line 1746, in monitor
make_plots(flash_data, rawacq_data, monitor_dir)
File "/user/cmagness/miniconda3_linux/envs/monitors/lib/python2.7/site-packages/cosmo_peewee-0.0.1-py2.7.egg/cosmo_peewee/osm/monitor.py", line 783, in make_plots
fig = plt.figure(figsize=(16,8))
File "/user/cmagness/miniconda3_linux/envs/monitors/lib/python2.7/site-packages/matplotlib/pyplot.py", line 548, in figure
**kwargs)
File "/user/cmagness/miniconda3_linux/envs/monitors/lib/python2.7/site-packages/matplotlib/backend_bases.py", line 161, in new_figure_manager
return cls.new_figure_manager_given_figure(num, fig)
File "/user/cmagness/miniconda3_linux/envs/monitors/lib/python2.7/site-packages/matplotlib/backend_bases.py", line 167, in new_figure_manager_given_figure
canvas = cls.FigureCanvas(figure)
File "/user/cmagness/miniconda3_linux/envs/monitors/lib/python2.7/site-packages/matplotlib/backends/backend_qt5agg.py", line 24, in init
super(FigureCanvasQTAgg, self).init(figure=figure)
File "/user/cmagness/miniconda3_linux/envs/monitors/lib/python2.7/site-packages/matplotlib/backends/backend_qt5.py", line 234, in init
_create_qApp()
File "/user/cmagness/miniconda3_linux/envs/monitors/lib/python2.7/site-packages/matplotlib/backends/backend_qt5.py", line 125, in _create_qApp
raise RuntimeError('Invalid DISPLAY variable')
RuntimeError: Invalid DISPLAY variable

[cmagness]

this was resolved by some changes mees made to the plotting algorithm

[cmagness]

this actually was not resolved by a different version of the code, but was resolved by running the code outside of a cron job. something about the servers is making this crash. needs further investigating.