Make plot_wing callable from the file directly and document this

[johnjasa]

Make it easier for users to call plot_wing from the file directly instead of from the command line

[marcovanderbijl]

I failed in getting this to work, I tried;

added
from openaerostruct.utils.plot_wing import Display
Display("aero.db")
to my OAS_run_script

and got an error on import sqlitedict. This is not in the anaconda repository, but I found it at https://pypi.org/project/sqlitedict/
I installed it by opening a anaconda environment terminal and did a $pip install -U sqlitedict

running the OAS_run_script did produce the aero.db and opened a window, but failed on showing anything, claiming it was not a valid database.

[johnjasa]

This should work for you:

from openaerostruct.utils.plot_wing import disp_plot

args = [[], []]
args[1] = 'aero.db'
disp_plot(args=args)

Make sure you're trying to view an optimization case, not an analysis case.

Edited: changed code to reflect your suggestion.

[marcovanderbijl]

yes! success! thanks a bunch!
if someone tries to replicate, this is the complete solution:
add

from openaerostruct.utils.plot_wing import disp_plot
args = [[], []]
args[1] = 'aero.db'
disp_plot(args=args)

to your optimization case OAS_run_file
as I am only today started to try to use OAS I used this to get the https://mdolab.github.io/OpenAeroStruct/aero_walkthrough.html completely working.