Re: Access Nth element in array with CSS Phoebus.

[Eusebio Naif Al-Soliman Fuentes via Tech-talk <tech-talk at aps.anl.gov>]

Hello again, everybody.

 

I've encountered another additional problem. When I try to retrieve a subarray using pva://Array_of_elements.VAL[3:7], the value in the PV Table is 'PV Error'.

 

I've also tried without 'VAL' and with other punctuation marks like parenthesis without success.

 

In addition to that, I came across an answer to a similar question (https://epics.anl.gov/tech-talk/2022/msg00529.php) where it suggested trying with the array filters of EPICS 3, but I think that's what I'm doing, so maybe is it a problem with my Phoebus build?

 

Any help is welcome.

 

Thanks, Eusebio.

---

Saludos/Best regards

University of Granada  

Eusebio Naif Al-Soliman Fuentes
MSc. Data Science and Computer Engineering

eunaif at correo.ugr.es

El 2023-07-26 21:51, Eusebio Naif Al-Soliman Fuentes via Tech-talk escribió:

Hello everybody.

I've a little question that it seems obvious.

I have a PV define as an array that looks like this:

record(aai, "Array_of_elements")
{
    field(DESC, "Test")
    field(FTVL, "INT64")
    field(NELM, "20")
}

If I want to access one specific element of that array, for example
the 7th, I can just do this:

pvmonitor Array_of_elements.VAL[7]

However, in Phoebus' PV Table, I'm trying to do the same, with
something like pva://Array_of_elements.VAL[7], but I'm always getting
the entire array and not the specific element, how can I solve it?

Thanks in advance, Eusebio.

-- 
Saludos/Best regards

University of Granada  

Eusebio Naif Al-Soliman Fuentes
MSc. Data Science and Computer Engineering

eunaif at correo.ugr.es