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<== Date ==> <== Thread ==>
Subject: Re: write to a single element of an array field
From: "Mooney, Tim M. via Tech-talk" <tech-talk at aps.anl.gov>
To: EPICS Techtalk <tech-talk at aps.anl.gov>, Benjamin Franksen <benjamin.franksen at helmholtz-berlin.de>
Date: Fri, 6 Mar 2020 18:58:04 +0000
Well, since no solution has been proposed, I'll give you my awkward and inefficient solution that will, nevertheless, work in a pinch.  The following calc _expression_ will make an acalcout record replace the element of array AA, whose index is in the A field, with the value in the B field:

cat(cat(aa[0,a-1],b),aa[a+1,-1])

Tim Mooney (mooney at anl.gov) (630)252-5417
Beamline Controls Group (www.aps.anl.gov)
Advanced Photon Source, Argonne National Lab


From: Tech-talk on behalf of Benjamin Franksen via Tech-talk
Sent: Thursday, March 5, 2020 12:42 PM
To: EPICS Techtalk
Subject: write to a single element of an array field

Is there an EPICS version where I can write (via link, DB or CA) a
scalar to one specific element (i.e. index) of an array field? I am not
as up to date on EPICS development as I used to be, so perhaps this has
been added and I missed it, perhaps in 7.x (hope dies last...).

Or has anyone written an "inverse subArray" record type I could use to
do that?

Cheers
Ben

Replies:
Re: write to a single element of an array field Benjamin Franksen via Tech-talk
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