complete vlookup function - similar to Excel - both tab/mat

A complete vlookup function, similar to MS Excel function, which works both with matrices and tables and with any type of lookupvalue.

This function should work as the vlookup function in Excel

vlookup looks for the 'look up value' in the 'luv-column'-th column of 'matrix_table' and return the corresponding 'mt_col'-th element of 'matrix_table' in the same row.

example:
matrix
1 2 3
4 5 6
7 8 9

luv = 6

[content,index] = vlookup(luv,matrix,3,1,0)

vlookup will look for the "luv" in the "matrix" in column 3 and will return the value in the same row in column 1 (4).

Legenda:
lookupvalue = can be any of the following types: [char / string / categorical / numeric / calendar duration / duration / datetime]
matrix_table = can be either a matrix or table
luv_col = can be any of the following types: [char / string / categorical / numeric / calendar duration / duration / datetime]
mt_col = can be any type
k = value to be shown in case the index is an empty vector

luv_col = 1 by default if omitted
k = [ ] by default if omitted

Copyright: [e-mail], 2019
Author: https://it.mathworks.com/matlabcentral/profile/authors/13958739-andrea-pinto