Multi-Line Colors in 2014

2 次查看（过去 30 天）

显示更早的评论

Sanjay Manohar 2015-1-24

1
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/171451-multi-line-colors-in-2014

编辑： Sanjay Manohar 2015-1-26

采纳的回答： Sanjay Manohar

在 MATLAB Online 中打开

In 2013 and earlier I could do this to compare multi-line plots:

   % make up some data
   X1 = rand(5,3);
   X2 = X1+rand(5,3)*0.1;
   plot(X1);     % draw dataset 1
   hold on;
   plot(X2,':'); % compare with corresponding dataset 2 
   hold off;

This is broken in matlab 2014: the second set of lines colours don't match up with the first set.

I guess this is because the axes keep track of the colororder index when hold is on.

How can I reset the colororder index so that subsequent plots restart with color 1, as in previous matlabs? I'd really rather not have to go through a for loop to draw each of the lines!

采纳的回答

Sanjay Manohar 2015-1-26

4
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/171451-multi-line-colors-in-2014#answer_165992

编辑：Sanjay Manohar 2015-1-26

在 MATLAB Online 中打开

Thanks all for your help. For anyone who wants to do this in future:

I finally got the answer by email from Claudette at Mathworks Documentation.

set(gca,'ColorOrderIndex',1)

will reset the colour order, so subsequent plot calls will use the same colour set.

So:

   % make up some data
   X1 = rand(5,3);
   X2 = X1+rand(5,3)*0.1;
   plot(X1);     % draw dataset 1
   hold on;
   set(gca,'ColorOrderIndex',1)
   plot(X2,':'); % compare with corresponding dataset 2 
   hold off;

will produce comparable solid and dotted lines.

It can be found in the online docs at http://www.mathworks.com/help/matlab/ref/axes-properties.html#prop_ColorOrderIndex - and she will update the page http://uk.mathworks.com/help/matlab/graphics_transition/why-are-plot-lines-different-colors.html with an example.

更多回答（2 个）

Image Analyst 2015-1-24

2
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/171451-multi-line-colors-in-2014#answer_165842

在 MATLAB Online 中打开

ColorOrder_demo.m

Starting with R2014b you have to explicitly specify a color, otherwise it will use the "next" color in subsequent calls to plot. For example:

plot(X1, 'b-', 'LineWidth', 3);     % draw dataset 1
hold on;
plot(X2,'r:', 'MarkerSize', 10); % compare with corresponding dataset 2 
grid on;

You might also find it interesting to run my attached colororder demo.

8 个评论
显示 6更早的评论隐藏 6更早的评论

Sanjay Manohar 2015-1-26

在 MATLAB Online 中打开

Still not understanding.

I have two sets of lines. Have you looked at the original code I posted? If you run my code in Matlab 2013, you will obtain the figure that Matz has posted below as a test. It shows two sets of lines, one for X1, one for X2, overlain, each in the same set of colours, but with different dash styles.

This is so that I can easily compare line set 1 with line set 2. I just want to be able to do this:

    plot( X1 )
    hold on
    plot( X2 , ':' )
    hold off

to where X1 and X2 are matrices, and that I can compare line 1 of X1, with line 1 of X2.

When I plot the second set of lines, it used to use the same colours as the first set. However, now since 2014b it does not! And I can't work out the easy way of achieving this seemingly common task.