map(Module,ZZ,Function) -- make a map

map(Module,ZZ,Function) -- make a map

Synopsis:

Function: map -- make a map

Input:

an instance of class Module.

an instance of class ZZ.

an instance of class Function.

Output:

an instance of class Matrix.

Optional arguments :

map(..., Degree)

map(M,n,f) -- construct a map from a free graded module of rank n to M whose entries are obtained from the function f by evaluating f(i,j).

The degrees of the basis elements of the source module are chosen in an attempt to ensure that the resulting map is homogeneous of degree zero.

Code:

     -- ../../../Macaulay2/m2/matrix1.m2:24
     map(Module,ZZ,Function) := Matrix => options -> (M,n,f) -> map(M,n,table(numgens M,n,f),options)