Re: Animation

*To*: mathgroup at smc.vnet.net*Subject*: [mg112641] Re: Animation*From*: "Sjoerd C. de Vries" <sjoerd.c.devries at gmail.com>*Date*: Fri, 24 Sep 2010 04:09:54 -0400 (EDT)*References*: <i7f2na$cum$1@smc.vnet.net>

Easy, use Take: Manipulate[ Graphics[{PointSize -> Large, Point[Take[place, i]]}, Frame -> True, PlotRange -> {{1, 10}, {1, 10}}], {i, 1, 4, 1}] Cheers -- Sjoerd On Sep 23, 10:22 am, "King, Peter R" <peter.k... 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