Pynac/Pynplt demo

One of the most basic ways of working with Dynac is to feed the executable an input file, and then to use plotit to look at the output plots. Here we show how this simple workflow can be performed in Pynac. We create an empty working directory, copy the relevant files into it, and then move into that directory to work.

First we import some stuff we need.



In [1]:

    
from Pynac.Core import Pynac
from Pynac.Plotting import PynPlt
from bokeh.io import output_notebook
import os
import shutil
output_notebook()









    





    
        
        Loading BokehJS ...

Create and populate the working directory

In our case, the relevant files are in the ../tests directory, and so we copy them from there.



In [2]:

    
newDir = 'workingDir'
if os.path.isdir(newDir):
    shutil.rmtree(newDir)
os.mkdir(newDir)
filelist = [
    'ESS_with_SC_ana.in',
    'Spoke_F2F_field.txt',
    'MBL_F2F_field.txt',
    'HBL_F2F_field.txt',
    'ESS_RFQ_out_70mA.dst',
]
for f in filelist:
    shutil.copyfile('../tests/' + f, newDir + '/' + f)
os.chdir(newDir)

Run Pynac

Create a Pynac object from the Dynac input file, and then run it.



In [3]:

    
pynacObject = Pynac('ESS_with_SC_ana.in')
pynacObject.run()

Plotting

Create a plotting object. This will pick up the plotting data that Pynac creates, and slice'n'dice it in preparation for plotting. Then call the plotit() method.



In [4]:

    
plottingObject = PynPlt()
plottingObject.plotit()

os.chdir('..')









    






    
        
    







    



/Users/stephenmolloy/git/Pynac/venv/lib/python3.6/site-packages/bokeh/models/sources.py:81: BokehUserWarning: ColumnDataSource's columns must be of the same length
  lambda: warnings.warn("ColumnDataSource's columns must be of the same length", BokehUserWarning))
/Users/stephenmolloy/git/Pynac/venv/lib/python3.6/site-packages/bokeh/models/sources.py:81: BokehUserWarning: ColumnDataSource's columns must be of the same length
  lambda: warnings.warn("ColumnDataSource's columns must be of the same length", BokehUserWarning))






    






    
        
    







    






    
        
    







    






    
        
    







    



/Users/stephenmolloy/git/Pynac/venv/lib/python3.6/site-packages/bokeh/models/sources.py:81: BokehUserWarning: ColumnDataSource's columns must be of the same length
  lambda: warnings.warn("ColumnDataSource's columns must be of the same length", BokehUserWarning))
/Users/stephenmolloy/git/Pynac/venv/lib/python3.6/site-packages/bokeh/models/sources.py:81: BokehUserWarning: ColumnDataSource's columns must be of the same length
  lambda: warnings.warn("ColumnDataSource's columns must be of the same length", BokehUserWarning))