How I have all three error bars in one figure

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SANGBIN LEE
SANGBIN LEE 2024-1-29
回答： Walter Roberson 2024-1-29
R1=10
R2=27
R3=10
Rtotalseries=R1+R2+R3
Vs=5
Itotal=Vs./Rtotalseries
V1=(Vs./Rtotalseries).*R1
V2=(Vs./Rtotalseries).*R2
V3=(Vs./Rtotalseries).*R3
V1measured=1.058
V2measured=2.875
V3measured=1.063
V1percenterror=((abs(V1-V1measured)./V1))*100
V2percenterror=((abs(V2-V2measured)./V2))*100
V3percenterror=((abs(V3-V3measured)./V3))*100
errorbar(V1,V1measured,V1percenterror)
errorbar(V2,V2measured,V2percenterror)
errorbar(V3,V3measured,V3percenterror)
=> I'm trying to get all three error bar codes in a single plot figure

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回答（2 个）

Star Strider
Star Strider 2024-1-29
Ran in:
One opotion is to use the hold function (and also figure) —
R1=10
R1 = 10
R2=27
R2 = 27
R3=10
R3 = 10
Rtotalseries=R1+R2+R3
Rtotalseries = 47
Vs=5
Vs = 5
Itotal=Vs./Rtotalseries
Itotal = 0.1064
V1=(Vs./Rtotalseries).*R1
V1 = 1.0638
V2=(Vs./Rtotalseries).*R2
V2 = 2.8723
V3=(Vs./Rtotalseries).*R3
V3 = 1.0638
V1measured=1.058
V1measured = 1.0580
V2measured=2.875
V2measured = 2.8750
V3measured=1.063
V3measured = 1.0630
V1percenterror=((abs(V1-V1measured)./V1))*100
V1percenterror = 0.5480
V2percenterror=((abs(V2-V2measured)./V2))*100
V2percenterror = 0.0926
V3percenterror=((abs(V3-V3measured)./V3))*100
V3percenterror = 0.0780
figure
hold on
errorbar(V1,V1measured,V1percenterror)
errorbar(V2,V2measured,V2percenterror)
errorbar(V3,V3measured,V3percenterror)
hold off
Make appropriate changes to get the result you want.
.
Walter Roberson
Walter Roberson 2024-1-29
Ran in:
R1=10
R1 = 10
R2=27
R2 = 27
R3=10
R3 = 10
Rtotalseries=R1+R2+R3
Rtotalseries = 47
Vs=5
Vs = 5
Itotal=Vs./Rtotalseries
Itotal = 0.1064
V1=(Vs./Rtotalseries).*R1
V1 = 1.0638
V2=(Vs./Rtotalseries).*R2
V2 = 2.8723
V3=(Vs./Rtotalseries).*R3
V3 = 1.0638
V1measured=1.058
V1measured = 1.0580
V2measured=2.875
V2measured = 2.8750
V3measured=1.063
V3measured = 1.0630
V1percenterror=((abs(V1-V1measured)./V1))*100
V1percenterror = 0.5480
V2percenterror=((abs(V2-V2measured)./V2))*100
V2percenterror = 0.0926
V3percenterror=((abs(V3-V3measured)./V3))*100
V3percenterror = 0.0780
errorbar(V1,V1measured,V1percenterror)
hold on
errorbar(V2,V2measured,V2percenterror)
errorbar(V3,V3measured,V3percenterror)
hold off
The third error bar is so close to the first error bar that it is easy to confuse them.

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