plotting y-axis issue and wrong plot

Question

Faisal Al-Wazir 2022-10-19

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1831033-plotting-y-axis-issue-and-wrong-plot

回答： VBBV 2022-10-21

采纳的回答： VBBV

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hi i'm writing a code for newton's 2nd law were very the mass

the first plot is Mass VS Acc

2ND Force VS Acc

3RD Force VS Mass

but i'm thinking i'm doing something wrong especially in the last plot because it look like the first one+ my axies are a bit wrong too so can anyone explain

clear

clc

subplot(3,1,1)

hold on

for m=0:100:1000

a=linspace(20,220,1000);

f=m.*a;

plot(f)

title('mass V/s Acceleration');

xlabel('acceleration');

ylabel('mass')

end

legend m=0 m=100 m=200 m=300 m=400 m=500 m=600 m=700 m=800 m=900 m=1000

subplot(3,1,2)

hold on

for m=0:100:1000

a=linspace(20,220,1000);

f=m.*a;

plot(a,f)

title('Force V/s acceleration');

xlabel('acceleration');

ylabel('Force')

end

legend m=0 m=100 m=200 m=300 m=400 m=500 m=600 m=700 m=800 m=900 m=1000

subplot(3,1,3)

hold on

for m=linspace(0,1000,11)

a=linspace(20,220,1000);

M=linspace(0,1000,1000);

f=m.*a;

plot(M,f)

title('Force V/s Mass');

xlabel('mass');

ylabel('Force')

end

legend m=0 m=100 m=200 m=300 m=400 m=500 m=600 m=700 m=800 m=900 m=1000

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Answer 1

VBBV 2022-10-21

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1831033-plotting-y-axis-issue-and-wrong-plot#answer_1080363

subplot(3,1,3)
hold on
for m=linspace(0,1000,11)
  a=linspace(20,220,1000);
  M=linspace(0,1000,1000);
  f=M.*a;. % use M 
  plot(M,f)
  title('Force V/s Mass');
xlabel('mass'); 
ylabel('Force')
end

If you use M instead of m you can notice the difference.