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#!/usr/bin/env python3
import optparse
import pylab as plb
try:
import skrf as rf
except (ImportError):
print('IMPORT ERROR: skrf is not installed correctly. Check you path.')
def main():
##for use with argparse
#parser = argparse.ArgumentParser(description='Plots contents of
# a touchstone file.')
parser = optparse.OptionParser(\
usage='plot_touchstone.py [options] file.s2p [file1.s2p]',\
description='Plots contents of a touchstone file.')
# for use with argparse
#parser.add_option('touchstone_files', \
# metavar='touchstone_file', type=str, nargs='+', \
# help='a touchstone file')
parser.add_option('-m',default=None, metavar='M',type=int,\
help='first index of s-parameter to plot' )
parser.add_option('-n',default=None, metavar='N',type=int,\
help='second index of s-parameter to plot' )
(options, args) = parser.parse_args()
if options.m is not None:
options.m -=1
if options.n is not None:
options.n -=1
plb.figure(figsize=(8,6))
ax_1 = plb.subplot(221)
ax_2 = plb.subplot(222)
ax_3 = plb.subplot(223)
ax_4 = plb.subplot(224) # noqa: F841
for touchstone_filename in args:
print(touchstone_filename)
ntwk = rf.Network(touchstone_filename)
ntwk.plot_s_db(ax = ax_1, m=options.m,n=options.n)
ntwk.plot_s_deg(ax = ax_2, m=options.m,n=options.n)
ntwk.plot_s_smith(ax = ax_3,m=options.m,n=options.n )
plb.show()
return (1)
if __name__ == "__main__":
main()
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