I've always ignored the take lane feature of midi tracks, though I use the audio version.    Doing a bit of experimenting, and a couple of things pop out:   there does not seem to be any way to use a PRV window for only one take lane, or an Event List for only one take?  Am I missing something? 

williamcopper
Am I missing something? 

I don't think so William... A take lane is based on a track, and any view of that track, be it PRV, event list, or whatever, see what is on the whole track.
 
At least that's the way I see it.

I believe there is an option (under View?)
To enable/disable viewing hiding muted clips... This may require muting the clips as opposed the the Lane...

A little experimentation has convinced me that take lanes on midi may be filled with problems ... or maybe I still don't fully understand how they work.   I've got midi data INTO a take lane, but I can't get it out again, and somehow controllers were changed into "shapes"    ... when I bounce to clip, which is how I merge many clips together, ALL the data disappears entirely.   Since, different than audio, the midi tools seem fixed to work per-track rather than per-take (PRV, EL, ...) this is looking like a feature to avoid rather than embrace.
 

I'm not sure what's going on here... Though I haven't done a lot of midi work these last few months it is possible something has changed for the worse as does my memory...

It might be a nice feature (maybe a feature request would be nice here?) to enable individual lanes to be accessed in PRV...

I think I remember finding that to isolate which overlaying midi clips to see in PRV, required setting sonar to hide muted clips (midi track) then selecting the clips I wish included in the view by muting those I did not wish to see... And it worked fine.

Under the View command I believe are options for how midi data is displayed in as much as handles, separate controller panes and the like...?

Keni
...hide muted clips...

That's the trick. Since comping works by muting clips, this will effectively show only the active parts of a MIDI comp in the PRV, but Hide Muted Clips isn't available in the Staff View.
 
That said, MIDI doesn't lend itself to being comped in a lot of cases because you can't make a cut in the middle of a note and have the two halves from different takes crossfade together as you can with audio. If you have Non-destructive MIDI Editing enabled, notes get truncated at split points, and if you don't, it's difficult to get the desired transition from one take to another with performances that have a lot of overlapping notes. Throw controllers into the mix (e.g. a piano part with sustains), and things can get really problematic. This is not a fault of comping workflow; this is the nature of editing discrete MIDI events.