How to adjust colors of animated plot3 over time

Hi,

I would like to change colors over time in an animated plot.

The way I do it right now is to run a loop over the datapoints and taking a color from a char array called colors.

tstep = .1

figure(1)

for n = 1:length(x)

plot3(x(1:n),y(1:n),z(1:n), 'LineWidth', 1, 'Color', colors(n))

pause(.05)

Image = getframe(gcf);

im = frame2im(Image);

end

However, this will change the color of the entire line in case of a change in color, while I would like the previous points to say the color they were.

How could I fix this?

Thanks so much,

Best

Hans

Answer 1

[darova]

Try this

n = 100;
colors = jet(100);
x = linspace(0,10,n);
y = sin(x);
cla
xlim([min(x) max(x)])
ylim([min(y) max(y)])

hold on
for i = 1:n-1
    plot(x(i:i+1),y(i:i+1),'color',colors(i,:))
    pause(0.1)
end
hold off

[Hans van der Horn]

Thanks so much! I works for a 2D plot, but I don't think it works for a 3D (x, y, z) plot using plot3.

[darova]

It works for 3D also. Did you try?