How to use reshape function in this situation ?

I have two matrices their info shown as the following:

% 1st Matrix info
Name      Size            Bytes  Class     Attributes

X         1x3                24  double              

% 2nd Matrix info
Name              Size             Bytes  Class     Attributes

   Y             19830x4             634560  double

How can I apply reshape function to execute a dot product between these matrices ?

Main goal: X and Y must have the same size !!!

Answer 1

[Guillaume]

Forgetting about the shape for the moment, in order to execute a dot product each argument must have the same number of elements. One of your matrix has 3 elements, the other over 79000.

You can reshape all you want, you'll never be able to perform a dot product between these two matrix.

Rather than asking us to solve an unsolvable problem, why don't you tell us what is the real problem? What is the end goal?

[Susan Arnold]

This is the situation I have and I can not modify it. Could you please then suggest an another solution ?

[Susan Arnold]

I am not sure, but I think bsxfun function can do something in my situation as explained in the following link: http://stackoverflow.com/questions/16973341/efficiently-compute-many-inner-products-in-matlab

[Guillaume]

bsxfun may or may not help (probably not). It's impossible to say until we know the end goal.

Why do you want to perform a dot product between these two variables?

[Susan Arnold]

The results look like something like above. What should I do then ?!

[Guillaume]

I have no idea what you should do since I have no idea what you're trying to do.

I also have no idea what 'above' refers to. If it refers to the stackoverflow post, in that case both vectors are the same size.