Saving plots lacks some info #700

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1. SimonHeybrock commented on Feb 23, 2026

   

   SimonHeybrock

   on Feb 23, 2026

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   Investigation notes

   What Bokeh supports: SaveTool has a filename property. Passing a SaveTool(filename='...') instance through HoloViews default_tools works, and HoloViews finalize hooks can dynamically update the filename on each plot render.

   Minimal first step — custom filename (points 2 and 3):
   Set SaveTool.filename via a HoloViews hook in Plotter.__call__, which already has access to ResultKey (output name, source name). The filename would include instrument, quantity, and date/time, e.g. DREAM_monitor-counts_2026-02-23T12-34.

   This addresses the default bokeh_plot.png filename and embeds the date — without changing the plot title.

   Adding quantity to the plot title (point 1) — deferred:
   The quantity info currently lives in the custom Panel toolbar above the plot, which is not part of the Bokeh figure and therefore not included in saved images. Adding it to the Bokeh plot title is possible but needs more thought on how to combine it with the existing time/lag title. Can be done as a follow-up.

   Blocked by #673 which reorganizes code around Plotter.
2. SimonHeybrock

   self-assigned this

   on Feb 25, 2026
3. SimonHeybrock

   added 2 commits that reference this issue on Feb 25, 2026

   Set descriptive filenames on Bokeh SaveTool in plot downloads

   ...

   This issue will close once commit 3d602fa is merged into the 'main' branch.

   3d602fa

   Set descriptive filenames on Bokeh SaveTool in plot downloads

   ...

   This issue will close once commit 82a5129 is merged into the 'main' branch.

   82a5129
4. SimonHeybrock

   closed this as completedin #726on Feb 27, 2026