ASSIGN ASSIGN Making assignments

Usage

FreeMat assignments take a number of different forms, depending 
on the type of the variable you want to make an assignment to.
For numerical arrays and strings, the form of an assignment
is either

  a(ndx) = val

where ndx is a set of vector indexing coordinates.  This means
that the values ndx takes reference the elements of a in column
order.  So, if, for example a is an N x M matrix, the first column
has vector indices 1,2,...,N, and the second column has indices
N+1,N+2,...,2N, and so on.  Alternately, you can use multi-dimensional
indexing to make an assignment:

  a(ndx_1,ndx_2,..,ndx_m) = val

where each indexing expression ndx_i corresponds to the i-th dimension
of a.  In both cases, (vector or multi-dimensional indexing), the
right hand side val must either be a scalar, an empty matrix, or of the
same size as the indices.  If val is an empty matrix, the assignment acts
like a delete.  Note that the type of a may be modified by the assignment.
So, for example, assigning a double value to an element of a float 
array a will cause the array a to become double.  

For cell arrays, the above forms of assignment will still work, but only
if val is also a cell array.  If you want to assign the contents of
a cell in a cell array, you must use one of the two following forms, either

  a{ndx} = val

or

  a{ndx_1,ndx_2,...,ndx_m} = val

which will modify the contents of the cell.
