how to use different color for different segment of same graph?

Hi all,

I have a figure like this which was obtained by numerical solution. I want to use different color for different segments. Can anyone please help?

[KSSV]

The figure already have different colors right? What data you have to plot? YOu need to use plot with different colors options. Read about plot.

Answer 1

[Walter Roberson]

In MATLAB, any one "primitive line object" is restricted to being a single color. If you want multiple colors, then you need to draw multiple lines -- or you need to take a very different approach such as drawing a surface or patch with face colors turned of and edge colors specified; for example see https://www.mathworks.com/matlabcentral/fileexchange/19476-colored-line-or-scatter-plot

[safisay]

I have seen that. but it was way too complex for me. Is there any other way?

[Image Analyst]

For example, if index1, index2, index3, and index4 are in order:

plot(x(index1:index4), y(index1:index4), 'b-', 'LineWidth', 4);
hold on;
plot(x(index2:index3), y(index2:index3), 'r-', 'LineWidth', 4);

This will plot a blue line with a red portion in the middle.

[Walter Roberson]

There is no other way. "primitive line objects" can never have multiple colors for one line, so you need to use multiple lines or you need to use a different kind of graphics object.