Add variable legend to a plot without for loop
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I am plotting two 201x4 arrays, resulting in four 2-d lines. The y array is a time series so I want the legend to vary accordingly. I created a 1x4 cell with strings that show the time variation of my y variable. However, the result is not satisfactory as shown in the figure below:
My code attempt is below:
lgd = {'HGS 50-year','HGS 100-year','HGS 150-year','HGS 200-year'};
h2 = plot(x,y,'LineWidth',1.25,'DisplayName',char(lgd)');
legend;
I can easily accomplish what I need with a for loop but I do not want to do that because I think I am close to accomplishing what I need without it.
Please help. Thank you.
采纳的回答
Star Strider
2021-3-11
编辑：Star Strider
2021-3-11
This appears to work correctly:
x = 0:0.1:10;
y = exp(-(x-(0:4).').^2)./(1:5).';
figure
plot(x, y)
lgd = {'HGS 50-year','HGS 100-year','HGS 150-year','HGS 200-year'};
legend(lgd)
EDIT — (11 Mar 2021 at 21:34)
Added plot figure.
.
2 个评论
Star Strider
2021-3-11
Yes.
Try this:
x = 0:0.1:10;
y = exp(-(x-(0:3).').^2)./(1:4).';
ya = exp(-(x-(0:3).'+0.1).^2)./(1:4).';
figure
hv = plot(x, y);
hold on
ha = plot(x, ya, '--k');
hold off
lgd = {'HGS 50-year','HGS 100-year','HGS 150-year','HGS 200-year'};
legend([ha(1); hv],{'Analytical',lgd{:}})
producing:
.
更多回答（1 个）
N = 20;
x = 1:N;
y = sort(rand(N,4));
lgd = {'HGS 50-year','HGS 100-year','HGS 150-year','HGS 200-year'};
h2 = plot(x,y,'LineWidth',1.25);
legend(h2, lgd)
3 个评论
Kien Pham
2021-3-11
Suppose I have an h1 series plotted in which the time variation is not important.
I used the 'DisplayName' switch to name that series while plotting h1. Is there a way to have the legend shown for only one of the 4 series in h1 but show the time sensitive legend for all 4 of the series in h2?
This is what I want to show:
I attempted to do so in the legend command below but it gave me an error. Thanks again for your help.
N = 20;
x = 1:N;
y = sort(rand(N,4));
x2 = 1:N;
y2 = sort(rand(N,4));
lgd2 = {'HGS 50-year','HGS 100-year','HGS 150-year','HGS 200-year'};
h1 = plot(x2,y2,'k--','LineWidth',1.25,'DisplayName','Analytical'); hold on;
h2 = plot(x,y,'LineWidth',1.25);
hold off;
legend(h1(1); h2, lgd); %error here
N = 20;
x = 1:N;
y = sort(rand(N,4));
x2 = 1:N;
y2 = sort(rand(N,4));
lgd1 = {'Analytical'};
lgd2 = {'HGS 50-year','HGS 100-year','HGS 150-year','HGS 200-year'};
h1 = plot(x2,y2,'k--','LineWidth',1.25); hold on;
h2 = plot(x,y,'LineWidth',1.25);
hold off;
legend([h1(1); h2], [lgd1, lgd2]);
Kien Pham
2021-3-11
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