bug: Off by one error in smith chart plot?

[thehans]

Bug Report

**NanoVNA-Saver version: **

0.7.3

Current behavior:

I noticed on a smith chart with large changes (steep VSWR dip) at the stop frequency and by setting marker at the stop freq that the marker was beyond the end of the plotted lines.

Expected behavior:

Lines extend to all data points

Steps to reproduce:

Set marker to maximum frequency on a reading that changes rapidly (steep dip near stop frequency) and it can be seen off the end of the lines.

Related code:

Looking at the source, I think I may have identified the source of this:

nanovna-saver/src/NanoVNASaver/Charts/Square.py

Line 78 in f793d2e

if d.freq > fstart and d.freq < fstop:

I don't know enough about the codebase to say whether this check is warranted at all, (why would data ever be outside of the frequency range?)
Anyways, I believe the solution would be to use <= and >= operators here to include those endpoints, if not removing the check altogether.