Calculate, then place results in a label

Programming and Development
1

working with nyquist and aud-do,
selecting audio then calculating a result (in this case a guess at the note),
then creating a label at the selection, and placing the result into the label.

These two don’t work:
(1) PasteNewLabel,
because I haven’t found a way to put the result into the pastebuffer/clipboard.
(2) AddLabel and then SetLabel,
because you have to know the number of the new label…
but you don’t, because the numbering is timeline-chronologic, not creation-time-chronologic,
so even if you can get the current count of #labels,
(and p.s. how to do that?)
you’ll be filling in the wrong label if the new label is not the last on the timeline.

Any suggestions?

2

If you only need to deal with one label track at a time, you can create labels directly from Nyquist rather than using AUD-DO. This is faster and more efficient than AUD-DO. You just have to return a correctly formatted list.

See the “Labels” section here: https://web.archive.org/web/20230405064412/https://wiki.audacityteam.org/wiki/Nyquist_Plug-ins_Reference#Return_Values
Also, look at the “Regular Interval Labels” plug-in (equallabels.ny) for an example of producing labels directly from Nyquist.

3

There is a known and logged bug re pasting into labels:

Copying label text with ‘Ctrl+C’ doesn’t work when label track isn’t selected #2854

Peter

4

Thanks, steve,
I found equalabel.ny https://github.com/audacity/audacity/blob/master/plug-ins/equalabel.ny (so different spelling)
and it was really informative…
it works! so I have begun to study it.

5

This topic was automatically closed after 30 days. New replies are no longer allowed.