Re: Manipulating list of functions
- To: mathgroup at smc.vnet.net
- Subject: [mg96325] Re: Manipulating list of functions
- From: Jean-Marc Gulliet <jeanmarc.gulliet at gmail.com>
- Date: Wed, 11 Feb 2009 05:24:26 -0500 (EST)
- Organization: The Open University, Milton Keynes, UK
- References: <gmrmek$9vj$1@smc.vnet.net>
In article <gmrmek$9vj$1 at smc.vnet.net>, replicatorzed at gmail.com wrote: > I have the following code: > > Manipulate[ > funcA[z_] := Sin[z + a]; > funcB[z_] := Cos[z + b]; > funcC[z_] := 0; > funcList = #[x] & /@ {funcA, funcB, funcC}; > Plot[funcList, {x, 1, 10}, Axes -> False, Frame -> True], > {a, 0, 1}, > {b, 0, 1} > ] > > It returns the Manipulate panel correctly. What annoys me is the cell > bracket of it that is constantly highlighted, probably because there > is some calculation going on even when I do not move any of the > sliders, due to some function-definitions. I'm afraid I do not fully > understand the cause of it. Nor do I know how to overcome it. Also > what should I do, if I want to move the funcA, funcB, funcC > definitions outside of Manipulate? As it has already answered many times in this very list, the arguments manipulated by Manipulate[] bust be seen explicitly in the expression being manipulated. For instance, funcA[z_] := Sin[z + a]; funcB[z_] := Cos[z + b]; funcC[z_] = 0; funcList[a_, b_, x_] = #[x] & /@ {funcA, funcB, funcC}; Manipulate[ Plot[funcList[a, b, x], {x, 1, 10}, Axes -> False, Frame -> True], {a, 0, 1}, {b, 0, 1}] works as expected and avoid the undesired background computations. Regards, --Jean-Marc