[Issue migrated from SourceForge | ID: 3429898 | Submitted by 'timblech']
[http://sourceforge.net/support/tracker.php?aid=3429898]

currently it seems that it is not possible to plot multiple envelopes in the same widget:

this fails:
[Env.sine, Env.perc].plot2

manually converting the envelopes to arrays seems to work:
[Env.sine, Env.perc].collect(.asSignal).collect(Array.newFrom()).plot2

would be great if this could be fixed ...