# hold on producing separate graphs

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Lucy le 11 Déc 2022
Modifié(e) : Voss le 13 Déc 2022
hold on
figure
x = I
y1 = 4*I.^20
hold on
plot(x,y1)
figure
x = I
y2 = 4*I.^1
hold on
plot(x,y2)
figure
x = I
y3 = 4*I.^0.3
hold on
plot (x,y3)
Here is my code for the three lines I want to plot on the same graph, however it is producing 3 separate graphs, I wondered how I can edit this to ensure it plots the three lines on one graph?
Thank you
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### Réponse acceptée

VBBV le 11 Déc 2022
I = 1:10;
figure
x = I
x = 1×10
1 2 3 4 5 6 7 8 9 10
y1 = 4*I.^2
y1 = 1×10
4 16 36 64 100 144 196 256 324 400
hold on
plot(x,y1)
% figure
x = I
x = 1×10
1 2 3 4 5 6 7 8 9 10
y2 = 4*I.^1
y2 = 1×10
4 8 12 16 20 24 28 32 36 40
hold on
plot(x,y2)
% figure
x = I
x = 1×10
1 2 3 4 5 6 7 8 9 10
y3 = 4*I.^0.3
y3 = 1×10
4.0000 4.9246 5.5616 6.0629 6.4826 6.8471 7.1712 7.4643 7.7327 7.9810
hold on
plot (x,y3)
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Lucy le 11 Déc 2022
Perfect, thank you!
VBBV le 11 Déc 2022
Its better to use subplot when you have values on lines which differ by significantly high
I = 1:10;
subplot(311)
x = I
x = 1×10
1 2 3 4 5 6 7 8 9 10
y1 = 4*I.^20 % this ^ 20 is huge number !
y1 = 1×10
1.0e+20 * 0.0000 0.0000 0.0000 0.0000 0.0000 0.0001 0.0032 0.0461 0.4863 4.0000
plot(x,y1)
y2 = 4*I.^1
y2 = 1×10
4 8 12 16 20 24 28 32 36 40
subplot(312)
plot(x,y2)
y3 = 4*I.^0.3
y3 = 1×10
4.0000 4.9246 5.5616 6.0629 6.4826 6.8471 7.1712 7.4643 7.7327 7.9810
subplot(313)
plot (x,y3)

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### Plus de réponses (1)

KALYAN ACHARJYA le 11 Déc 2022
Modifié(e) : KALYAN ACHARJYA le 11 Déc 2022
Remove all "figure" statements, also one hold on is sufficient.
Same Figures:
x = I
y1 = 4*I.^20
hold on
plot(x,y1)
x = I
y2 = 4*I.^1
plot(x,y2)
x = I
y3 = 4*I.^0.3
plot (x,y3)
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