Update Simple_Patch_Antenna.py

[VolkerMuehlhaus]

Modified to use matplotlib.pyplot instead of outdated pylab

[thliebig]

Hello @VolkerMuehlhaus, in principle I agree with this change. But I guess if we do this, we should do all tutorials together?

[VolkerMuehlhaus]

Hello @VolkerMuehlhaus, in principle I agree with this change. But I guess if we do this, we should do all tutorials together?

Hi Thorsten @thliebig,

[x] done

You might want to double check, I tested all examples here on Windows. The axis gridlines are not always nice, but I didn't know change that.

BR, Volker

[thliebig]

The axis gridlines are not always nice, but I didn't know change that.

Has anything changed? I mean pylab was only a shortcut for matplotlib.pyplot but all the method used ultimately should not have changed at all now? Thus I would not expect any visible change to the plots?

This is maybe my only remaining issue with this PR, that both commit messages are a bit misleading...

[VolkerMuehlhaus]

Has anything changed? I mean pylab was only a shortcut for matplotlib.pyplot but all the method used ultimately should not have changed at all now? Thus I would not expect any visible change to the plots?

Yes, the sometimes ugly scale existed before, I left this unchanged.

Now back from vacation, I updated all sources again to restore the exact format of captions/labels, but without these errors:

/home/volker/openEMS_work/Python_examples/Rect_Waveguide.py:115: SyntaxWarning: invalid escape sequence '\R'
  plot(freq*1e-6,real(ZL), linewidth=2, label='$\Re\{Z_L\}$')
/home/volker/openEMS_work/Python_examples/Rect_Waveguide.py:117: SyntaxWarning: invalid escape sequence '\I'
  plot(freq*1e-6,imag(ZL),'r--', linewidth=2, label='$\Im\{Z_L\}$')
/home/volker/openEMS_work/Python_examples/Rect_Waveguide.py:119: SyntaxWarning: invalid escape sequence '\O'
  ylabel('ZL $(\Omega)$')

by \\ instead of r-string used before.

One other detail that I considered changing (but did not change) is the debug switch for showing the model/mesh in AppCSXCAD. In the forum I see many new users who completely miss the importance of checking the mesh lines,so my persomal preference would be to always show the model & mesh. Naming that switch "debug" is misleading in my opinion, but never mind, you are the project owner so it's up to you.

TL;DR: All models show similar plots now, but using matplotlib.pyplot instead of pylab

[VolkerMuehlhaus]

@thliebig push :-)