Error using plot, vectors must have the same length
Show older comments
I get the error
error using plot
"Vectors must be the same length"
when I run this code
F= 200 ; V=10 ; Q=1 ; k=0.1 ;
t(1)= 0;
c(1)= 0;
h=0.01;
Y= @(t,c) F/V-Q.*c/V-k.*c.^2;
for i= 1:200
t(i+1)= t(i)+h;
k1= c(i);
k2= c(i)+0.5*k1*h;
k3= c(i)+0.5*k2*h;
k4= c(i)+k3*h;
c(i+1)= c(i)+h*(k1+2*k2+2*k3+k4)/6;
end
plot(t,c)
1 Comment
darova
on 29 Mar 2021
Please use code inserting button

Answers (1)
Sergio Yanez-Pagans
on 28 Mar 2021
Just check the sizes of t and c. You can check this on the variable window or on the command window as follows:
size(t) % will show dimensions for t
size(c) % will show dimensions for c
Plot requires a 1-on-1 correspondence, so for example, if t is 1x10, c MUST be 1x10
Hope you find this useful!
Categories
Find more on Mathematics in Help Center and File Exchange
Products
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!