MATLAB BUILDER JA 2 Podręcznik Użytkownika Pobierz pdf (Strona 62)

3 Programming

}

else if (a instanceof byte[][])

{

byte[][] x = (byte[][])a;

/* (do something with x...) */

}

else

{

throw new MWException(

"Bad type returned from myprimes");

}

This example uses the toArray method (see “Methods to Copy, Convert,

and Compare MWArrays” on p age 4-49) to return a Java primitive array

representing the underlying MATLAB array. The

toArray method works just

getData in the previous examples, except that the returned array has the

same dimensionality as the underlying MATLAB array.

Code Fragment: Using MWArray Query

The next example uses the MWArray classID method (see “Methods to

Return Information About an MWArray” on page 4-40) to determine the

type of the underlying MATLAB array. It also checks the dimensionality by

calling

numberOfDimensions. If any unexpected information is returned, an

exception is thrown. It then checks the

MWClassID and processes the array

accordingly.

public void getprimes(int n) throws MWException

{

myclass cls = null;

Object[] y = null;

try

{

cls = new myclass();

y = cls.myprimes(1, new Double((double)n));

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MATLAB BUILDER JA 2 Podręcznik Użytkownika Strona 62