Plot Pulseq automatically generates a new plot

Why does the command

   plot(FLASH,'TimeRange',[0 20e-3])

automatically generates a new plot windows although I use the command

fig(1) = figure(1);clf(1);hold on;

in front of the plot command? I have one empty plot and in figure 2 my sequence.

Therefor I use the pulseq OpenSource: https://pulseq.github.io/

Answer 1

[Walter Roberson]

This behaviour appears to be hard-coded into the source code https://github.com/pulseq/pulseq/blob/master/matlab/%2Bmr/%40Sequence/Sequence.m of that third-party product. Look near line 294, in the plot routine, where it does

fig = figure;

That unconditionally creates a new figure.