Re: Animation

*To*: mathgroup at smc.vnet.net*Subject*: [mg112644] Re: Animation*From*: Barrie Stokes <Barrie.Stokes at newcastle.edu.au>*Date*: Fri, 24 Sep 2010 04:10:27 -0400 (EDT)

Hi Peter I guess you'll get around 10s of thousands of replies :-) to this one, but in any case the following is what I came up with in short order. (*****) place = RandomReal[ {0, 10}, {100, 2} ]; Manipulate[ Graphics [{PointSize -> Large, Point[ Take[ place, i ] ]}, Frame -> True, PlotRange -> {{1, 10}, {1, 10}} ], {i, 1, Length[ place ], 1}] (*****) Hope this helps Barrie >>> On 23/09/2010 at 6:22 pm, in message <201009230822.EAA13282 at smc.vnet.net>, "King, Peter R" <peter.king at imperial.ac.uk> wrote: > I have a table of coordinates eg place={{10, 4}, {10, 7}, {10, 5}, {9, 7}} > > I want to make an animation of these points which adds them successively. so > the following almost works (NB I know that ListAnimate would work as well and > is possibly preferable) > > Manipulate[ > Graphics[{PointSize -> Large, Point[place[[i]]]}, Frame -> True, > PlotRange -> {{1, 10}, {1, 10}}], {i, 1, 4, 1}] > > in that it displays the points successively. bu what I want is for the > preceding points to be left visible (so the number of points grows). Needless > to say the above is a trivial example, in practice I could have 10s of > thousands of points and so want to be careful not to create very large > arrays. > > Thanks