Array Declarations

1 Declaring Arrays in one way

type Voltage = Real(unit = "V");

An array variable can be declared by appending dimensions within square brackets after a type name or after a variable name.

class ArrayDim parameter Integer n = 1, m = 4, k = 5; Real[3] positionvector = {1, 2, 3}; // 3-dimensional position vector Real[3,3] identitymatrix = {{1, 0, 0}, {0, 1, 0}, {0, 0, 1}}; // transformation matrix Integer[n,m,k] arr3d = fill(1,n,m,k); // A 3-dimensional array Boolean[2] truthvalues = {false, true}; // A boolean vector Voltage[10] voltvector = fill(10, 10); // A vector of voltage values end ArrayDim;

1.1 Simulation of ArrayDim

simulate( ArrayDim )

Take a look at the result at time=0:

val(voltvector[3],0)
plot({voltvector[3],positionvector[2]})

2 Declaring Arrays in another way

The same declarations can be expressed as:

class ArrayDim2 parameter Integer n = 1, m = 4, k = 5; Real positionvector[3] = {1, 2, 3}; Real identitymatrix[3,3] = {{1, 0, 0}, {0, 1, 0}, {0, 0, 1}}; Integer arr3d[n,m,k] = fill(1,n,m,k); Boolean truthvalues[2] = {false, true}; Voltage voltvector[10] = fill(10, 10); end ArrayDim2;

2.1 Simulation of ArrayDim

simulate( ArrayDim2 )

Take a look at the result at time=0:

val(voltvector[3],0)
plot(voltvector[3])

3 Declaring Row Matrices and Column Matrices

Column matrices and row matrices can be declared as below:

class ColRowMatrix parameter Integer n = 3; Real[n, 1] colmat = fill(1, n, 1); // Column matrix Real[1, n] rowmat = fill(1, 1, n); // Row matrix end ColRowMatrix;

3.1 Simulation of ArrayDim

simulate( ColRowMatrix )

Take a look at the result at time=0:

val(colmat[3,1],0)
plot(colmat[3,1])

4 Declaring Empty Arrays

It is also allowed to declare empty arrays. An Empty Array has at least one dimension of size 0 and contains no array elements.

class Empty Real[0, 3] M; // An empty matrix M Integer x[0]; // An empty vector x end Empty;
simulate(Empty)