# legend line color same

3 次查看（过去 30 天）
Sean 2023-5-21

How to get different color in legend, getting same dashed green color for I3,I2 , should be as plotted I3 green and I2 to be blue
disp(f2);
plot( L_interp, I3, 'g--' ,L_interp, I2, 'b--',L_interp, I4, 'r--',L_interp, I, 'k--');
xlabel('wavelength');
ylabel('I');
legend('I3', 'I2');
Thank you
##### 4 个评论显示 3更早的评论隐藏 3更早的评论
Dyuman Joshi 2023-5-22
As I requested above, please share you whole code.

### 采纳的回答

Nathan Hardenberg 2023-5-22
Your Code should work. I simplified it and ran it here (see below).
You can try the following:
clear % run this
clear 'all' % and also try this
% before you plot make a line like this (this forces a new figure)
figure(10); hold on; grid on; clf;
And also try restarting Matlab. If this also does not help you have to provide the whole code (as already suggested). Maybe you plot I3 before for some reason. This can be tested: Just enter more names in the legend:
legend('test1', 'test2', 'test3', 'test4', 'test5', 'test6', 'test7', 'test8')
The Code that works:
L_interp = linspace(0,10,10);
I3 = rand(1,10);
I2 = rand(1,10);
plot(L_interp, I3, 'g--', L_interp, I2, 'b--');
xlabel('wavelength');
ylabel('I');
legend('I3', 'I2');
##### 1 个评论显示 无隐藏 无
Sean 2023-5-25
thank you, it worked
i used hold on
plot( L_interp, I3, 'g--');
hold on
plot(L_interp, I2, 'b--');

### 更多回答（1 个）

Hello,
Try:
legend('I3', '','I2');
##### 1 个评论显示 无隐藏 无
Sean 2023-5-22
i tried but got the same result as before.

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