Re: Re: How to find which variable caused the trigger in Manipulate[]
- To: mathgroup at smc.vnet.net
- Subject: [mg103906] Re: [mg103821] Re: How to find which variable caused the trigger in Manipulate[]
- From: "Nasser M. Abbasi" <nma at 12000.org>
- Date: Mon, 12 Oct 2009 06:36:33 -0400 (EDT)
- References: <20091011163315.063702@jfultz2winlap>
- Reply-to: "Nasser M. Abbasi" <nma at 12000.org>
"This looks to me like a bug, but one that is very simple to work around.
Use
Rule instead of RuleDelayed for the Refresh. I.e.,
Manipulate[
Row[{Dynamic[Refresh[r = process["x "]; "", TrackedSymbols -> {x}]],
Dynamic[Refresh[r = process["y "]; "", TrackedSymbols -> {y}]],
Dynamic[Refresh[Text[r], TrackedSymbols -> {x, y}]]}], {x, 0,
1}, {y, 0, 1}, {r, "", "", ControlType -> None},
Initialization :> (process[s_String] :=
Module[{}, Text[StringJoin[s, DateString[]]]])]
After a bit of experimentation, my advice is to completely avoid RuleDelayed
with the TrackedSymbols option.
Sincerely,
John Fultz"
Ok John. fyi the documenation (version 7) for TrackedSymbols, shows :> in
the examples and description and not ->
I am assuming that when this bug is fixed in a future release one can still
use :> as the documentation says.
Thanks again for all your help.
--Nasser