Design Matrix set up

I am creating a desgin matrix for a data set and I have this equation

y(t)=a1 + a2 exp(-(t-0.0001)/50^2) + a3 sin(2π(60)t)

When I am entering it into matlab I keep getting error and I don't know what I am doing wrong.

Code:

X=(2*pi*(60)*t);
A = [ones(length(t),1) exp(-((t-0.0001)/50).^2)' sin(2*pi*(60)*t)];

Output:

Error using horzcat

Dimensions of arrays being concatenated are not consistent.

[Mark Sherstan]

Try running it again as so:

clear all

t = 5;
X=(2*pi*(60)*t);
A = [ones(length(t),1) exp(-((t-0.0001)/50).^2)' sin(2*pi*(60)*t)];

I dont see any issues so perhaps you have over written some variable somehwere or is t an array / vector of values?

[Walter Roberson]

The code assumes that t is a column vector and will fail if it is a row vector.

[Emilee Burris]

t is a vector of values

[Walter Roberson]

Before the assignment to X, insert

t = t(:);

That should fix the problem.