display legends with different line styles in matlab

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user1234
user1234 2017-5-7
评论： Samuel Suakye 2022-10-24
How one can draw a graph with different line styles corresponding to different legends? For instance, my data is 5 by 4 as follows:
__________________________________________________
A B C D
__________________________________________________
0.84702 0.64419 0.61728 0.48538
0.76445 0.1864 0.39728 0.15959
0.04743 0.0412 0.09432 0.86721
0.4256 0.1458 0.05432 0.803192
0.9855 0.8242 0.5679 0.7102
___________________________________________________
So far I tried the following, first I saved this data file as 'myData.m'. Next, I load it on my Matlab window using the command 'load myData.m'. Then after, I have used the followig codes:
[n,p] = size(myData);
t = 1:n;
plot(t,myData)
legend('A','B','C','D','Location','NorthEast')
xlabel('Time'); ylabel('Value');
How can I display legends with different line styles((like '-','.-','.' and '--')) along with different colours using Matlab?

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采纳的回答

Walter Roberson
Walter Roberson 2017-5-7
If you plot() one line at a time, then you can usually pass a linespec to the plotting routines; sometimes you need to pass a 'LineStyle' name/value pair.
If you are plot()'ing with four different X, Y pairs, then you can put a linespec after each one:
plot(x1, y1, '-', x2, y2, '.', x3, y3, '--', x4, y4, '.-')
If you are plotting with four columns in your Y, then you need to record the line handles and set their LineStyle property:
h = plot(x, Y_by_4);
set(h(1), 'LineStyle', '-');
set(h(2), 'LineStyle', '.');
etc
  2 个评论
user1234
user1234 2017-5-7
@Walter Roberson Thanks! I edited it now. Still I couldn't manage the error.
Walter Roberson
Walter Roberson 2017-5-7
Replace
[n,p] = size(myData);
t = 1:n;
plot(t,myData)
with
h = plot(myData);
set(h(1), 'LineStyle', '-');
set(h(2), 'LineStyle', ':');
set(h(3), 'LineStyle', '--');
set(h(4), 'LineStyle', '-.');
Note: these are the only four valid line styles (other than 'none')

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更多回答（1 个）

Samuel Suakye
Samuel Suakye 2022-10-23
col = [0,0,1;0.9,0.4,0.17;0,1,0]; % Blue, Orange, Green How do I change this to linestyle
  8 个评论
显示 6更早的评论
Walter Roberson
Walter Roberson 2022-10-24
Change
col = [0,0,1;0.9,0.4,0.17;0,1,0]; % Blue, Orange, Green
to
col = {'-', ':', '--'};
Change
plot(linAx,W*1e-12,JxL*1e13,'color',col(i,:))
to
plot(linAx,W*1e-12,JxL*1e13, col{i});

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