okay thanks .. and if i need to put the 3 values then should i use the following syntax??

Real r[3] =[1.1, 2.1, 3.1];

That is matrix syntax (2-dimensional). 1D-arrays use curly bracers:
Real r[3] ={1.1, 2.1, 3.1};

thanks a lot

Can you also please tell me about matrix.. what is the proper syntax for declaring a matrix with 2 rows and 3 columns .. and values in first row being 1,2,3 and second row 4,5,6 ?

>>> loadString("model M Real r[2,3] = [1,2,3;4,5,6]; end M;")

true

>>> instantiateModel(M)

"class M

  Real r[1,1];

  Real r[1,2];

  Real r[1,3];

  Real r[2,1];

  Real r[2,2];

  Real r[2,3];

equation

  r = {{1.0, 2.0, 3.0}, {4.0, 5.0, 6.0}};

end M;

"

As you can see, it is also possible to nest the array constructor to create a matrix.

Hi,

I suggest you read these things:
Modelica specification (Chapter 10 is about arrays):
https://modelica.org/documents/ModelicaSpec33.pdf

Some more stuff about Modelica:
https://www.openmodelica.org/images/doc … torial.pdf
Some OpenModelica documentation:
https://www.openmodelica.org/index.php/ … umentation

Cheers,
Adrian Pop/

hi,

    can you please show me how to declare a matrix with (n lines and j columns) and how extract a specific column

Matrix=[1 2 5;4 5 3;1 9 8]



a=Matrix(2,:)