Cytometry: smooth navigation between tubes and gates, custom groups

2026.10.22-cytometrie-fluidite · 2026-10-22

Delivered build : ffc2c3ba485833d1a7fb68064447c2fce623feaa

Changes

• Points, plots and figures already computed for a tube are kept by the server: switching tubes or going back into a gate no longer rereads the file (measured locally on 31 tubes: 5 to 40 ms after a first pass, versus 2 to 7 s before).
• The other tubes of the analysis warm up in the background once the first is shown, without disturbing the screen; heavy computations let other requests through.
• Gate tree statistics are computed in a light version (counts and percentages); per-parameter detail is only computed for the selected gate.
• Custom sample groups: tick tubes by hand, with the group's tubes shown as children in the tree.
• Compensation controls: a tube can be marked as a control; "Compensation matrices" lists only those tubes, and "Apply to all" and the gallery skip them.
• Creating a gate no longer blanks the plot while it reloads. Otto now flags that a positive or negative gate without a clear threshold is not placed.

Known limitations

• A tube not opened since the last server restart still takes 2 to 6 s to display the first time.
• Detailed statistics of a gate with more than a million events take about 5 s.
• Positive gates placed by Otto where the density shows no clear valley keep guessed bounds and must be adjusted on screen.