Experimental Physics and
Industrial Control System

Jovan Loncar <[email protected]> · Fri, 02 Apr 2010 16:56:37 +0200

Hi all,
i am new to EDM and i am trying to create an array from different scalar
(integer) PVs.

So that i can display all of them on one X-Y Graph. Only the last
reading is neccessary

and the resulting X-Y Graph should look like a "historgram" or sound
equalizer (for a visual

understanding of what i am trying to accomplish).
Possibly the result would look something like
LOC\\my_array:{EPICS\\A_PV, EPICS\\B_PV, EPICS\\C_PV ...}

The number of scalar PVs can be up to 200 and is constant.

I am not sure if it is possible and if someone has already tried this i
would appreciate some help.
If this is not possible only within EDM, then maybe the way to go is to
to use some scripts.

I have used the example for edmFilters with python to change the
template edl.

But in that example the write to stdout of the script is used by the
Embedded Window Widget

to display new/changed screen.

I don't know how to pass the local PVs (LOC) to the python script and
back to EDM.
Another option could be to create a new widget, for this task.

I still need to investigate this one, but would not like to reinvent the
wheel

in case someone here knows of an existing widget for this kind of operation.
If anyone has another idea or if i am missing something please point me
to the

right direction.
Thanks in advance for answers.
Best Regards,
Jovan

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System