Re: Re: Mathematica Animation Drives Me Crazy!

*To*: mathgroup at smc.vnet.net*Subject*: [mg95705] Re: [mg95681] Re: [mg95604] Mathematica Animation Drives Me Crazy!*From*: peter <plindsay.0 at gmail.com>*Date*: Sun, 25 Jan 2009 06:52:35 -0500 (EST)*References*: <15010445.1232628718537.JavaMail.root@m02>

David same results with 64-bit iMac as with 32-bit Macbook. Peter 2009/1/24 David Park <djmpark at comcast.net>: > This may be a platform dependent problem. In any case, I'm working on a > 32-bit Windows Vista, Version 7. > > Here are some typical results of repeated Trigger activation (Trigger > controls omitted) with the first form of the Trigger example: > > Module[{n = 0, nevals = 0, nlist = {}, calcnevals}, > calcnevals[] := > If[n == 0, nevals = 1; nlist = {n}, nevals = nevals + 1; > nlist = Append[nlist, n]]; > {Trigger[Dynamic[n, (n = #; calcnevals[]) &], {0, 10, 1}], > Dynamic[n], Dynamic[nevals], Dynamic[nlist]}] > > 4,10,{0,1,1,1,2,2,2,3,3,4} > 10,23,{0,1,1,1,2,2,2,3,3,3,3,4,4,4,5,6,7,7,8,8,9,10,10} > 10,13,{0,1,2,3,4,5,6,7,8,9,9,10,10} > 10,12,{0,1,2,3,4,5,6,7,8,9,10,10} > 10,15,{0,1,1,2,3,4,5,6,7,7,8,8,9,10,10} > 1,2,{0,1} > > Notice that in the first and last case the animation 'froze' at n = 4 and n > = 1. The first number is the last value of n, the second number is the > number of values that were actually produced (it should be equal to 11) and > the third item is the list of values produced, which should be > {0,1,2,3,4,5,6,7,8,9,10}. > > I would be very thankful if users on Windows Vista could try this out. > > > David Park > djmpark at comcast.net > http://home.comcast.net/~djmpark/ > > > > > From: David Park [mailto:djmpark at comcast.net] > > > I have never ending problems with Mathematica animation since Version 6. > This takes the forms: > > 1) Sometimes (maybe about 10% if the time) an animation will 'stick' without > finishing or repeating. > > 2) It does not seem possible to control the actual number of points or > evaluations in the animation. > > 3) The documentation for the control of timing and precise steps is quite > poor and this may be a reflection of actual buggy animation routines. > > > > Here is an example using Trigger, which is a kind of once-through animation. > I am using an integer range, 0 to 10 in steps of 1. I would therefore like > to have exactly 11 evaluations. But I always get an extra evaluation at the > end, and even worse I often obtain repeat evaluations for some intermediate > value. The following displays the value of n, the number of evaluations, and > the actual list of n values for the evaluations. > > > > Module[{n = 0, nevals = 0, nlist = {}, calcnevals}, > > calcnevals[] := > > If[n == 0, nevals = 1; nlist = {n}, nevals = nevals + 1; > > nlist = Append[nlist, n]]; > > {Trigger[Dynamic[n, (n = #; calcnevals[]) &], {0, 10, 1}], > > Dynamic[n], Dynamic[nevals], Dynamic[nlist]} > > ] > > > > The following uses DisplayAllSteps -> True but seems to have the same > problem. > > > > Module[{n = 0, nevals = 0, nlist = {}, calcnevals}, > > calcnevals[] := > > If[n == 0, nevals = 1; nlist = {n}, nevals = nevals + 1; > > nlist = Append[nlist, n]]; > > {Trigger[Dynamic[n, (n = #; calcnevals[]) &], {0, 10, 1}, > > DisplayAllSteps -> True], > > Dynamic[n], Dynamic[nevals], Dynamic[nlist]} > > ] > > > > Do other users see these kind of problems, especially repeat evaluations for > some values of n? > > > > David Park > > djmpark at comcast.net > > <http://home.comcast.net/~djmpark> http://home.comcast.net/~djmpark/ > > > > >

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**Re: Re: Mathematica Animation Drives Me Crazy!**

**Re: Mathematica Animation Drives Me Crazy!**

**Re: Re: Mathematica Animation Drives Me Crazy!**