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Re: Animation


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



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