Add legend for a specific plot

Question

Tesla 2022-5-27

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1728375-add-legend-for-a-specific-plot

评论： Bjorn Gustavsson 2022-5-27

采纳的回答： Bjorn Gustavsson

在 MATLAB Online 中打开

I trying to show the legend just for l1, l2 and l3, but when i write legend it show all other legends

how can I show just what i want

here my code

clear;clc
x05 = [0 0.1, 0.2, 0.3, 0.4];
y05 = [0 0.0879, 0.1404, 0.1718, 0.2031];
sdt05 = [0 0.0039, 0.0041, 0.0034, 0.0043];
errorbar(x05,y05,sdt05,'o','MarkerSize',5,...
    'MarkerEdgeColor','red','MarkerFaceColor','red', 'Color', 'red')
hold on
f= polyfit(x05,y05,2);
xx = linspace(min(x05), max(x05));
v = polyval(f, xx);
l1= plot(xx,v,'red', ...
    'LineWidth',2,...
    'MarkerSize',10,...
    'MarkerEdgeColor','red',...
    'MarkerFaceColor','red', 'DisplayName', 'Rd = 0.5');
hold on 
x06= [0 0.1	0.2	0.3	0.4	0.46	0.55];
y06 = [0 0.0849	0.1455	0.1829	0.2202	0.2132	0.1485];
sdt06 = [0 0.0023	0.0035	0.0044	0.0026	0.0123	0.0075];
errorbar(x06,y06,sdt06,'o','MarkerSize',5,...
    'MarkerEdgeColor','green','MarkerFaceColor','green', 'Color', 'green')
hold on
f1= polyfit(x06,y06,4);
xx1 = linspace(min(x06), max(x06));
v1 = polyval(f1, xx1);
l2 = plot(xx1,v1,'green', ...
    'LineWidth',2,...
    'MarkerSize',10,...
    'MarkerEdgeColor','green',...
    'MarkerFaceColor','green','DisplayName', 'Rd = 0.6');
x064= [0 0.1	0.2	0.3	0.4	0.46 0.55];
y064 = [0 0.0849	0.1465	0.192	0.2101	0.2243	0.1728];
sdt064 = [0 0.0023	0.0019	0.0048	0.0028	0.0037	0.0051];
errorbar(x064,y064,sdt064,'o','MarkerSize',5,...
    'MarkerEdgeColor','blue','MarkerFaceColor','blue', 'Color', 'blue')
hold on
f2= polyfit(x064,y064,4);
xx2 = linspace(min(x064), max(x064));
v2 = polyval(f2, xx2);
l3= plot(xx2,v2,'blue', ...
    'LineWidth',2,...
    'MarkerSize',10,...
    'MarkerEdgeColor','blue',...
    'MarkerFaceColor','blue','DisplayName', 'Rd = 0.64');
legend()