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When I try to create a tooltip for a Dataset item, I get ... instead of the item value. See the toy code example below:

tooltipValue =  Plot[Sinc[x], {x, 0, 10}];

Dataset[{
    <|"colA" -> 1, "colB" -> Tooltip[1, tooltipValue]|>
  , <|"colA" -> 2, "colB" -> Tooltip[2, tooltipValue]|>
  }]

Dataset

How can I force the value in column B to be 1 and 2 instead of ... ?

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  • 4
    $\begingroup$ Use option ItemDisplayFunction -> (# &) in Dataset. $\endgroup$ Commented Oct 3, 2021 at 20:25

1 Answer 1

Reset to default
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From the version 12.1 on, you can use option ItemDisplayOption -> (# &). By default, it is set to Automatic, which does some preprocessing and converts large items to ellipsis.

tooltipValue = Plot[Sinc[x], {x, 0, 10}];

Dataset[{<|"colA" -> 1, "colB" -> Tooltip[1, tooltipValue]|>, <|
   "colA" -> 2, "colB" -> Tooltip[2, tooltipValue]|>}, 
 ItemDisplayFunction -> (# &)]

Dataset

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  • $\begingroup$ Also see Identity for the ItemDisplayFunction. $\endgroup$ Commented Oct 3, 2021 at 22:23
  • 1
    $\begingroup$ @Edmund, I did try that but ItemDisplayFunction -> Identity did not work. $\endgroup$ Commented Oct 3, 2021 at 22:48
  • $\begingroup$ ItemDisplayFunction -> (Identity[#] &) works but this is less elegant than your solution. $\endgroup$ Commented Oct 3, 2021 at 23:07
  • $\begingroup$ Read ItemDisplayFunction's documentation. The function takes 3 parameters. ({i, p, d} |-> i) for example. $\endgroup$ Commented Oct 4, 2021 at 23:43
  • $\begingroup$ @Edmund, yes, I know. But I don't see any advantage (or difference) in using Identity instead of a shorthand pure function. $\endgroup$ Commented Oct 5, 2021 at 6:30

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