Plotting a graph with given points

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James Pain
James Pain il 13 Nov 2017
Commentato: James Pain il 13 Nov 2017
I have created a function to compute the Euler of a given IVP as seen below:
function U= Uler(N,h,y)
t = 0;
S = N/h;
for i=1:S
y = y +(h*(0.5*y*(1-y/2)))
t = t +h
end
U=y
end
My question is how do I plot a graph using the values of t and y I obtained during this function?

Risposte (1)

KSSV
KSSV il 13 Nov 2017
function [t,y]= Uler(N,h,y)
S = N/h;
y = zeros(1,S) ;
t = zeros(1,S) ;
% initial condition
y(1) = 0 ;
t(1) = 0 ;
for i=2:S
y(i) = y(i-1) +(h*(0.5*y*(1-y/2))) ;
t(i) = t(i-1) +h
end
end
[t,y]= Uler(N,h,y) ;
plot(t,y) ;
  1 Commento
James Pain
James Pain il 13 Nov 2017
I've tried putting in this function, and I don't seem to be getting any results, it says Error: "File: Uler.m Line: 13 Column: 1 This statement is not inside any function. (It follows the END that terminates the definition of the function "Uler".)"
and even after putting that plot function before putting end, it still says there's an error on line 9.

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