User`s manual

3 Creating Fortran MEX-Files

3-32

At the MATLAB prompt, entering

full = eye(5)

full =

1 0 0 0 0

0 1 0 0 0

0 0 1 0 0

0 0 0 1 0

0 0 0 0 1

creates a full, 5-by-5 identity matrix. Using fulltosparse on the full matrix

produces the corresponding sparse matrix.

spar = fulltosparse(full)

spar =

(1,1) 1

(2,2) 1

(3,3) 1

(4,4) 1

(5,5) 1

Calling Functions from Fortran MEX-Files

It’s possible to call MATLAB functions, operators, M-files, and even other

MEX-files from within your Fortran source code by using the API function

mexCallMATLAB. This example creates an mxArray, passes various pointers to a

subfunction to acquire data, and calls

mexCallMATLAB to calculate the sine

function and plot the results.

C $Revision: 1.8 $

================================================================

C sincall.f

C Example for illustrating how to use mexCallMATLAB.

C Creates an mxArray and passes its associated pointers (in

C this demo, only pointer to its real part, pointer to number

C of rows, pointer to number of columns) to subfunction fill()

C to get data filled up, then calls mexCallMATLAB to calculate

C sin function and plot the result.