Re: Relative time in XY graph

[Ralph Lange <Ralph.Lange@gmx.de>]

On Fri May 17 2013 21:37:01 GMT+0200 (CEST), Bruce Hill <bhill@slac.stanford.edu> wrote:

[...]
One option would be for you to provide a 2nd array for the X PV and
fill it with the time values for each value in your waveform.    The best
way I know how to create the time array would be with the aSub record,
but maybe other EPICS user's may have other ways to do that.

For the time array I'm using a compress record in circular buffer mode (one for each different waveform size/timebase), pointing its INP to a stringin record (one per IOC) that scans every second and shows its own time stamp as seconds since epoch using soft timestamp device support.

~Ralph