Some recent modest ASC full data trend plots have shown gaps in the data with an accompanying popup error:
[Error] Purging failed. Increase 'Max drawing path length' in prefs.
It is not immediately clear what "purging" and "max drawing path length" mean, but if you increase it from the default of 20k to 100k the gaps disappear.
Attached is the 'gappy' plot with the popup, and the preferences with the increased max drawing path length
Recently, Rolf and Jonathan alerted CDS to the existence on 'qtgrace', a currently-supported grace implementation that appears to solve several issues. In the attached plot, you can see an extra sizing slider (currently at 1.3) and a "Fit" button that resizes a plot to fit the window. Currently packaged by Michael Thomas for SL7, we are working on a test rollout at LLO