For loop outputs 1x1 vectors into a matrix instead of scalars

[CE_10614767]

I am analyzing a ground motion applied to a SDOF structure and finding the motion with Newmark's method. 

To accomplish this I have read the ground motion in with the readexcel function and then use a for loop to find the relative displacement, acceleration and velocity for each time step.

The file used and the needed excel file are attached.

[Werner_E · Accepted solution]

In the calculation of p.hat you typed square brackets! Never do this unless you want to create a matrix/vector. Always use (round) parentheses to group expressions.

[LucMeekes]

You've typed square brackets [ ] in your expression for Phat:

You should NEVER type square brackets, unless you want to create an array.

Change those square brackets to (ordinary) round brackets.

Prime will/may show square brackets if necessary (in this  particular case it will not), but that doesn't matter.

Success!
Luc