Example: Function call: entropyr(matrix_1).

 

matrix_1:

 

 

at point_1:

 

 

Example: calculation of entropyr function with matrix:

MATLAB code (.\Aorda\PSG\MATLAB\Examples\Functions\Func_value_entropyr.m) for function calculation:

 

%Define data:

H1 = [0.1 0.2 0.5 0.2];

a = [0.25;0.25;0.25;0.25];

 

%=======================================================================

%Calculation of function with PSG Subroutine 'functionvalue'

%Calculate entropyr function at point 'a':

val1 = functionvalue('entropyr', [], H1, [], [], a);

%Display function value:

disp(sprintf('functionvalue = %g', val1));

%=======================================================================

%Calculation of function with PSG Subroutine 'tbpsg_function_value'

%Create the PSG matrix 'matrix_1'(structure containing header and matrix body) and pack it to structure 'toolboxstruc_arr':

toolboxstruc_arr(1) = tbpsg_matrix_pack('matrix_1', H1, [],  [], []);

%Create the PSG point 'point_1'(structure containing header and matrix body) and pack it to structure 'toolboxstruc_arr':

toolboxstruc_arr(2) = tbpsg_point_pack('point_1', a, []);

%Calculate entropyr function at point 'point_1':

val2 = tbpsg_function_value('entropyr(matrix_1)','point_1',toolboxstruc_arr);

%Display function value:

disp(sprintf('tbpsg_function_value = %g', val2));

%=======================================================================

%Creation of User Subroutine for calculating function value

%User subroutine is similar to the 'functionvalue'

%Create problem statement:

problem_statement = sprintf('%s\n',...

'calculate',...

'Point: point_1',...

'  entropyr(matrix_1)',...

' ');

%Create Subroutine:

tbpsg_create_user_subroutine(problem_statement,toolboxstruc_arr,'.\','calculate_entropyr');

%Uncomment section to call the user subroutine 'calculate_entropyr':

%{

%Calculation of function with User Subroutine 'calculate_entropyr':

[solution_str,outargstruc_arr] = calculate_entropyr(H1,matrix_1_vars,a,point_1_vars);

%Extract function value from the solution report:

val = tbpsg_function_data(solution_str, outargstruc_arr);

%}

 

Program output:

 

functionvalue = 0.167358

tbpsg_function_value = 0.167358