Name legend on graph with a second y axis

3 次查看（过去 30 天）
Marol Valencia
Marol Valencia 2025-3-27
评论： Walter Roberson 2025-3-28
Ran in:
I am plotting three curves on the same figure, but I have not been able to name the third legend because the third curve is plotted against a second y axis. In the following code is the graph and the things I've tried
T_4340_ASM = [ 205
315
425
540
650]
T_4340_ASM = 5×1
205 315 425 540 650
<mw-icon class=""></mw-icon>
<mw-icon class=""></mw-icon>
S_u_4340_ASM = [ 1980
1760
1500
1240
1020]
S_u_4340_ASM = 5×1
1980 1760 1500 1240 1020
<mw-icon class=""></mw-icon>
<mw-icon class=""></mw-icon>
S_y_4340_ASM = [ 1860
1620
1365
1160
860]
S_y_4340_ASM = 5×1
1860 1620 1365 1160 860
<mw-icon class=""></mw-icon>
<mw-icon class=""></mw-icon>
El_4340_ASM = [ 11
12
14
17
20]
El_4340_ASM = 5×1
11 12 14 17 20
<mw-icon class=""></mw-icon>
<mw-icon class=""></mw-icon>
HB_4340_ASM = [ 520
490
440
360
290]
HB_4340_ASM = 5×1
520 490 440 360 290
<mw-icon class=""></mw-icon>
<mw-icon class=""></mw-icon>
figure(1)
plot(T_4340_ASM,S_y_4340_ASM,"Marker","square",Color=[0.6350 0.0780 0.1840])
hold on
plot(T_4340_ASM,S_u_4340_ASM,"Marker","pentagram","Color",[0 0.4470 0.7410])
hold on
title('Tempering temperature vs 4340 Steel Mechanical properties')
xlabel('Temperature[C°]')
ylabel('[MPa]')
legend('Yield Point','Tensile Strength') %If I put a third entry on here it ignores it because at this point the other curve is not plotted yet
yyaxis right
plot(T_4340_ASM,El_4340_ASM,"Marker","o") %And if i put it after here it just names the last legend
ylabel('Elongation [%]')

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采纳的回答

Walter Roberson
Walter Roberson 2025-3-27
Ran in:
T_4340_ASM = [ 205
315
425
540
650]
T_4340_ASM = 5×1
205 315 425 540 650
<mw-icon class=""></mw-icon>
<mw-icon class=""></mw-icon>
S_u_4340_ASM = [ 1980
1760
1500
1240
1020]
S_u_4340_ASM = 5×1
1980 1760 1500 1240 1020
<mw-icon class=""></mw-icon>
<mw-icon class=""></mw-icon>
S_y_4340_ASM = [ 1860
1620
1365
1160
860]
S_y_4340_ASM = 5×1
1860 1620 1365 1160 860
<mw-icon class=""></mw-icon>
<mw-icon class=""></mw-icon>
El_4340_ASM = [ 11
12
14
17
20]
El_4340_ASM = 5×1
11 12 14 17 20
<mw-icon class=""></mw-icon>
<mw-icon class=""></mw-icon>
●
HB_4340_ASM = [ 520
490
440
360
290]
HB_4340_ASM = 5×1
520 490 440 360 290
<mw-icon class=""></mw-icon>
<mw-icon class=""></mw-icon>
figure(1)
h(1) = plot(T_4340_ASM,S_y_4340_ASM,"Marker","square",Color=[0.6350 0.0780 0.1840]);
hold on
h(2) = plot(T_4340_ASM,S_u_4340_ASM,"Marker","pentagram","Color",[0 0.4470 0.7410]);
hold on
title('Tempering temperature vs 4340 Steel Mechanical properties')
xlabel('Temperature[C°]')
ylabel('[MPa]')
legend('Yield Point','Tensile Strength') %If I put a third entry on here it ignores it because at this point the other curve is not plotted yet
yyaxis right
h(3) = plot(T_4340_ASM,El_4340_ASM,"Marker","o"); %And if i put it after here it just names the last legend
ylabel('Elongation [%]')
legend(h, {'S_y_4340_ASM', 'S_u_4340_ASM', 'El_4340_ASM'})

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