Error using horzcat Dimensions of arrays being concatenated are not consistent.

Not sure why I'm recieving this error for this code:

h= 0.1;

t0= 0;

y1=-0.25;

tEnd=2;

T=[t0:h:tEnd];

N=20;

Y=zeros(N+1,1);

%solving with Taylor series

for i=1:N

Y1= sin(4*T);

Y2= 4*cos(4*T);

Y3= -16*sin(4*T);

Y4= -64*cos(4*T);

Y(i+1)= Y(i) + Y1(i)*h + (Y2(i)/2)*h^2 + (Y3(i)/6)*h^3 + (Y4(i)/24)*h^4;

end

>> [T,Y]

Answer 1

[Star Strider]

The reason is that ‘T’ is a (1x21) row vector, and ‘Y’ is a (21x1) column vector.

The (:) subscript convention forces ‘T’ to become a column vector here, so the concatenation works:

Result = [T(:),Y]