CODEWITHSUNDEEP
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JayP
JayP

Reputation: 101

Animated graph of ODE

I am attempting to create an animated graph by plotting specific points form 2 column vectors buy am having issues.

I have attempted to use the pause, drawnow, changing my vectors and am still having trouble with my code not working. I have got my vector in a for loop which specifies the points needing to be plotted.

Using ODE45 I have made a column vector with 2 rows.

grid on
func=plot(t,x);
%set(gca,'XLim',[0 tmax])
for i=1:length(x)
    set(func,'XData',x(1,i),'YData',x(2,i));
    drawnow
end

I expect the output to be an animated graph, but currently, all that I'm getting is either a nonanimated graph, or a bunch of errors saying that I am exceeding the array bounds.

Upvotes: 0

Views: 71

Answers (1)

rinkert
rinkert

Reputation: 6863

You are using plot with a single point. The default plotting style for plot is to not show individual points, but to connect the input data with lines.

Either change the LineSpec property to e.g. 'o':

func = plot(x(1,1), x(2,1), 'o');

or use the scatter function to plot individual points:

func = scatter(x(1,1), x(2,1));

Upvotes: 3

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