scroll programmatically within uitable
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I am starting to build an app suing the AppDesigner and need to deal with a fairly large uitable (>1000 rows).
In some cases it would be nice to scroll within this table to a certain row or cell programmatically.
https://ch.mathworks.com/help/matlab/ref/matlab.ui.container.tree.scroll.html shows that in 2020a there is now the function scroll, which allows scrolling e.g. within a list box to a certain item.
Is there a way to do the same within a uitable (created using the AppDesigner)? If not, if there a plan to add this in the near future?
采纳的回答
A function (findjobj) on the file exchange supports programmatic scrolling on uitables when the uitable is embedded in a regular figure (demo here).
However, this method is not supported in uifigures (used by AppDesigner) for reasons explained in this answer.
Update! Matlab R2021a now supports programmatic scrolling in UITables
Examples: uit is the uitable handle.
- scroll(uit,vlocation) where vlocation is 'top'|'bottom'
- scroll(uit,hlocation) where hlocation is 'left'|'right'
- scroll(uit,target,targetIndex) where target is 'row'|'column'|'cell' and targetIndex is a row or column number or a 1x2 cell location.
更多回答（1 个）
Sean de Wolski
2020-8-10
0 个投票
The scroll syntax in 20a only works in uifigures (the underlying figure used by app designer). Simply call it in a callback or function in the app.
4 个评论
Adam Danz
2020-8-10
@Sean de Wolski, I played around with the scroll function for a bit but I don't see how it can be used to scroll to a certain row within a UITable. The documentation shows how to scroll within a list box or tree node and I can see how this function could be extended to do the same with UITables, which would be great, but I couldn't get it to scroll within a uitable.
In cases where the scroll function is supported in app designer, users also have to turn "scrollable" on in the app's UIFigure.
Sean de Wolski
2020-8-10
Ahh. I was confusing regular figure with uifigure, not lack of support for uitables... Disregard (for now!)
Adam Danz
2020-8-10
Looking forward to the "yet" part. Lots of people have asked how to programmatically scroll to a certain row and column of a uitable.
Steven Brossi
2020-8-11
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