MATLAB BUILDER JA 2 Podręcznik Użytkownika Pobierz pdf (Strona 55)

Passing Arguments to and from Java

double Adata = 24;

MWNumericArray A = new MWnumericArray(Adata);

System.out.println("Array A is of type " + A.classID());

Java Builder converts the input argument to an instance of MWNumericArray,

with a

ClassID property of MWClassID.DOUBLE.ThisMWNumericArray object

is the equivalent of a MATLAB 1-by-1

double array.

When you run this example, the results are as follows:

Array A is of type double

Changing the Default by Specifying the Type

When calling an MWArray class method constructor, supply ing a specific data

type causes Java Builder to convert to that type instead of the default.

For example, in the following code fragment, the code specifies that

A should

be constructed as a MATLAB 1-by-1 16-bit integer array:

double Adata = 24;

MWNumericArray A = new MWnumericArray(Adata, MWClassID.INT16);

System.out.println("Array A is of type " + A.classID());

When you run this example, the results are as follows:

Array A is of type int16

Specifying Optional Arguments

So far, the examples have not used M-functions that have varargin or

varargout arguments. Consider the following M-function:

function y = mysum(varargin)

% MYSUM Returns the sum of the inputs.

% Y = MYSUM(VARARGIN) Returns the sum of the inputs.

% This file is used as an example for the MATLAB

% Builder for Java product.

3-9

1 2 ... 50 51 52 53 54 55 56 57 58 59 60 ... 291 292

Brak uwag

MATLAB BUILDER JA 2 Podręcznik Użytkownika Strona 55