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

Question

safisay 2017-11-13

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/366644-how-to-use-different-color-for-different-segment-of-same-graph

评论： Walter Roberson 2017-11-15

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?

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

KSSV 2017-11-13

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.

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Walter Roberson 2017-11-13

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/366644-how-to-use-different-color-for-different-segment-of-same-graph#answer_290772

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

3 个评论
显示 1更早的评论隐藏 1更早的评论

Image Analyst 2017-11-15

在 MATLAB Online 中打开

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 2017-11-15

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.

请先登录，再进行评论。