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| <== Date ==> | <== Thread ==> |
|---|
| Subject: | Re: Array widget in Display Builder |
| From: | "Kasemir, Kay via Tech-talk" <tech-talk at aps.anl.gov> |
| To: | Tomasz Brys <Tomasz.Brys at ess.eu>, "tech-talk at aps.anl.gov" <tech-talk at aps.anl.gov> |
| Date: | Wed, 14 Apr 2021 14:08:33 +0000 |
|
>So, If I want to have an EMPTY array of size 30 what I have to do?
>I do not want to change the size of this array. What I want is to write sometimes 3 elements, and sometimes empty it (keeping size of 30). >Maybe I should use a Table widget instead?
We might mix our nomenclature when it comes to size/length/capacity. For the array widget, they're all the same and fixed. "Size 30" means there are always 30 elements. 'EMPTY' would mean no elements, size=length=0, while capacity may still be 30. The array widget doesn't support that. You could set the array to [ 0, 0, 0, 0, ..., 0 ] with 30 x [0], but not EMPTY as in []. Yes, for a display, you could use a table widget, but that requires a (small) script to transform the array data from the PV into the rows/columns of the table.
-Kay |