actions in SpectrogramRenderer call bundle and regex stuff during rebin operation, possibly causing slow application

[jbfaden]

I'm working on a script which is hanging for 10s of seconds and jstack shows that it is calling regex and safename operations as it rebins. This makes no sense and probably wasn't anticipated. This needs to be studied.

I'm attaching two stack dumps from the current version of Das2.

[jbfaden]

jstack.zip

[jbfaden]

It looks like if a table is both a spectrogram (having DEPEND_1) and a bundle (having BUNDLE_1), then it will use the bundle dataset for weightsDataSet. This causes things to work very slowly, because the assumption that it's a small number of datasets (X,Y,Z for example). Here I have 5000+ bundled datasets.

[jbfaden]

See sftp://jfaden.net/home/jbf/project/voyager/git/u/bill/20231219/analysisSaveBug93.jy