I've noticed some unexpected behavior with plschr and plenv. I
modified x09c.c by adding this line...
plschr(0.0, 0.5);
...immediately before the first plenv call in main (i.e. the plenv
call for the "Plot using identity transform" plot). This plenv call
draws the numeric labels for the X and Y ticks, and the above plschr
call resulted in smaller text for that plot, which I expected.
The unexpected (at least by me) behavior is that the next plot (i.e.
the "Plot using 1d coordinate transform" plot) reverted back to the
default character size. Even if I put a plschr call immediately
before the second plenv call, the numeric labels on the second plenv
call come out at the default size. In fact, I can't find a way to
make the numeric labels drawn in subsequent plenv calls be anything
other than the default size!
I found a "workaround": call plenv with axis=-1 (or -2) and
subsequently call plschr and plbox to draw the numeric labels (and box).
Can anyone shed light on why only the first plenv call respects
earlier plschr calls?
Thanks,
Dave
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