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Re: Combining Slider and SetterBar in Manipulate

  • To: mathgroup at smc.vnet.net
  • Subject: [mg115229] Re: Combining Slider and SetterBar in Manipulate
  • From: John Fultz <jfultz at wolfram.com>
  • Date: Tue, 4 Jan 2011 18:49:38 -0500 (EST)

On Tue, 4 Jan 2011 04:27:50 -0500 (EST), JohnH wrote:
> On Dec 24 2010, 1:12 am, John Fultz <jfu... at wolfram.com> wrote:
>> The string is merely a label.  The actual value of qt is the numeric
>> value on
>> the lhs of the rules.  So, instead of...
>>
>> {{qt, 7, "Special"}, {7 -> "Rising", 5 -> "Smile", 20 -> "Saws",
>> 12 -> "Falling"}, ControlType -> SetterBar}
>>
>> it would be something like this...
>>
>> {{qt, 3}, {7 -> "Rising", 5 -> "Smile", 20 -> "Saws",
>> 12 -> "Falling"}, ControlType -> SetterBar}
>>
>> I.e., the initial value would probably be a number (since you seem to
>> be using
>> numbers as values...although that's certainly not required), and it has
>> to be a
>> *different* number than any of the ones you're using.
>>
>> Also...a bit of unsolicited advice.  Your use of Block is a *bad* idea.
>> It's
>> always bad to reference Block-scoped or Module-scoped variables
>> declared outside
>> of a Manipulate or Dynamic from within that Manipulate/Dynamic.  If
>> you're
>> wanting to localize the variable 'someData', then Manipulate offers you
>> an easy
>> way to do that.  Add someData as a control variable, but no control
>> appearance.
>> I.e.,
>>
>> {someData, ControlType->None}
>>
>> So, after my proposed changes, your code looks like:
>>
>> Manipulate[
>> ListLinePlot[someData[[tinx, 2 ;;]]], {{tinx, 1, "Time"}, 1, 25,
>> 1}, {{qt, 3}, {7 -> "Rising", 5 -> "Smile", 20 -> "Saws",
>> 12 -> "Falling"}, ControlType -> SetterBar},
>> Pane[Text@Dynamic[tinx]], {someData, ControlType -> None},
>> ControlPlacement -> Top,
>> Initialization :> (someData ==
>> Table[Sin[i j]*Cos[j] // N, {i, 25}, {j, 12}];
>> tinx == 1)]
>>
>> Sincerely,
>>
>> John Fultz
>> jfu... at wolfram.com
>> User Interface Group
>> Wolfram Research, Inc.
>>
>>
>> On Thu, 23 Dec 2010 03:56:25 -0500 (EST), JohnH wrote:
>>> I am looking for a solution to what should be a common and simple
>>> problem. I have a slider to control time, but I also want to use a
>>> SetterBar to pick out some interesting dates. The bare bones of my
>>> current attempt is:
>>>
>>> Block[{someData},
>>> Manipulate[
>>> ListLinePlot[someData[[tinx,2;;]]],
>>> {{tinx,1,"Time"},1,25,1},
>>> {{qt,7,"Special"},{7->"Rising",5->"Smile",20->"Saws",12-
>>>> "Falling"},ControlType->SetterBar},
>>> Pane[Text@Dynamic[tinx]],
>>> ControlPlacement->Top,
>>> Initialization:>(
>>> someData==Table[Sin[i j]*Cos[j]//N,{i,25},{j,12}];
>>> tinx==1)
>>> ]
>>> ]
>>>
>>> Ideally, none of the setter buttons would be selected if the time was
>>> not one of the special ones.  Clicking on one of the setter buttons
>>> would set the time to that value.
>>>
>>> Any suggestions would be appreciated.
>>>
> John,
>
> Thank you for your reply, particularly the extra advice (I'm always
> looking for better ways to do things).
> However, the code you proposed does not do what I am looking for. I
> essentially want to pick an index
> into the data using either the slider, or via the setter bar (to pick
> particularly interesting cases). I did find
> a way to do it. Again, advice on a more correct way to do it would be
> appreciated. The code is:
>
> Manipulate[
> ListLinePlot[someData[[tinx, 2 ;;]]],
> {{tinx, 1, "Time"}, 1, 25, 1},
> Style@Pane[
> Row@{"Special: ",
> SetterBar[Dynamic[tinx], Evaluate[si2],
> Appearance -> "Horizontal"]}],
> Pane[Text@Dynamic[tinx]],
> {someData, ControlType -> None},
> {specialIndices, ControlType -> None},
> {si2, ControlType -> None},
> ControlPlacement -> Top,
> Initialization :> (
> someData == Table[Sin[i j]*Cos[j] // N, {i, 25}, {j, 12}];
> specialIndices == {7, 5, 20, 12};
> si2 == {7 -> "Rising", 5 -> "Smile", 20 -> "Saws",
> 12 -> "Falling"};
> tinx == 1)
> ]
>
> This seems to do the right thing but is perhaps not the right way to
> do it. BTW, I did remove
> my use of Block by making the variables into controls.

This code didn't work for me, but it did work if I wrapped Dynamic around=

SetterBar:

Manipulate[
 ListLinePlot[someData[[tinx, 2 ;;]]], {{tinx, 1, "Time"}, 1, 25, 1},
 Style@Pane[
   Row@{"Special: ",
     Dynamic@SetterBar[Dynamic[tinx], Evaluate[si2],
       Appearance -> "Horizontal"]}],
 Pane[Text@Dynamic[tinx]], {someData,
  ControlType -> None}, {specialIndices, ControlType -> None}, {si2,
  ControlType -> None}, ControlPlacement -> Top,
 Initialization :> (someData ==
    Table[Sin[i j]*Cos[j] // N, {i, 25}, {j, 12}];
   specialIndices == {7, 5, 20, 12};
   si2 == {7 -> "Rising", 5 -> "Smile", 20 -> "Saws", 12 -> "Falling"};
   tinx == 1)]

The reason for this is because, unlike the body of the Manipulate, the custom
controls you create don't update dynamically without an explicit Dynamic.  I.e.,
a Dynamic is needed around SetterBar for the same reason that it is needed in
the next custom control, Pane[Text@Dynamic[tinx]].

This might have worked for you because you had attached the definition of si2
globally while you were experimenting with your code.

Aside from that, this looks pretty good.

Sincerely,

John Fultz
jfultz at wolfram.com
User Interface Group
Wolfram Research, Inc.


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