Rotate text?

[DrD]

I have a few objectives that I want to accomplish, most of which are functional now. If successful, I will look over my code for 'improvements', and write up a brief explanation of the features I've captured, along with related usage examples. No problem with sharing it, but it's not quite presentable yet.

I started with an impedance Smith chart, plotting complex impedance values based on normalized gamma or load impedance. I also wanted to plot matching networks using capacitive, inductive, or transmission line lengths, as needed, to result in 1:1 VSWR, (zero reflection coefficient). I'm sort of stuck at this point, since I want to easily view transmission line length on the chart, hence the need for perimeter wavelength labeling, i.e., rotated text!

In the meantime, I've added the inverse impedance chart, for admittance. Thus facilitating series OR parallel matching networks, so much the better. (The so-called "immitance" Smith chart).

Trying to get this coded sure makes me appreciate Mr. Smith, and all of his work in creating the original chart design! I began this adventure using a Python program approach. As the program evolved, it seemed like I could do this with the Prime, also. If ever we can communicate with the outside world to a remote terminal unit, it could be useful as a very handy, compact, VNA, (vector network analyzer), for antenna work and such.

Most likely, it will just end up as another of those 'things' I do, towards some uncertain end ...

-Dale-