MATLAB Reference

eval (x)

Evaluates the given variable as if given on the command prompt. Therefore, if a string variable holding the name to a function is passed, then it allows a way to call different functions by evaluating a single variable. This utility is widely used for parametric situations such as using different activation functions, and different training algorithms by issuing a call to an evaluated variable.

ones (x,y)

Returns a matrix of the specified dimension, containing all 1's.

prod (x)

Returns the product of all elements in the given array.

rand(x,y) 

Returns matrix of given size with normally distributed random elements between 0 and 1.

size (x)

Returns the dimensions of the given array (matrix) as an array of two numbers, contents corresponding to number of rows and columns, respectively.

surf(x,y,c) 

Draws a 3D by graph taking couples from the array variables x and y as locations and place a point in the respective value contained the array variable c, coloring it accordingly. These points are connected as a surface.

tic 

Starts a chronometer to measure time.

toc 

Stops the chronometer started with the function tic, and returns the elapsed time passed since then.