Function evaluation on tables

evaltbl(T,f) Returns the result of applying the function f to each subband of the wavelet packet table T. Returns a matrix whose rows describe the subband to which f was applied, followed by the value of the function on that subband.

applytbl(T,f) Returns a new wavelet packet table by applying the vector-valued function f to each subband of the wavelet packet table T. Returns a nested array.

Arguments:

• T is a nested array, a wavelet packet table to which to apply the function.
• f is the name of a function such as f(x), where x is an array. The function must result in a real scalar or a real array for evaltbl; it must result in a real array for applytbl. For applytbl, the number of rows and columns of f(x) should match the number of rows and columns of x.

Mathcad Example