MATLAB: How tonitailize MWStructArray

mwstructarray

How do I initialize my MWStructArray with two fields and 5 elements.

Best Answer

Hi,

#include "mclcppclass.h"

const char* fields[] = {"a", "b"};

mwArray my_struct(1, 5, 2, fields);

See doc for more:

http://www.mathworks.com/help/releases/R2011a/toolbox/compiler/mwarraymwsizenum_rowsmwsizenum_colsintnum_fieldsconstcharfieldnames.html

Related Solutions

MATLAB: Example of coding a `struct` in Java when packaging Matlab function

The eaiest way to learn how to create structs in the Java API is to add a sample in the Library Compiler tool with a sample struct and sample data. This will generate Java code that will show you how to use the struct api with your own data.

Here is an example:

a.i1 = 1.0
a.i2 = 'a string'
foo(a)

And the generated Java method:


public static void fooExample() {
		MWStructArray aIn = null;
		MWArray aIn_i1_1 = null;
		MWArray aIn_i2_1 = null;
		Object[] results = null;
		try {
			// instantiate data within struct aIn
			double aIn_i1_1Data = 1.0;
			aIn_i1_1 = new MWNumericArray(aIn_i1_1Data, MWClassID.DOUBLE);
			String aIn_i2_1Data = "a string";
			aIn_i2_1 = new MWCharArray(aIn_i2_1Data);
			// instantiate struct aIn and set inner data
			int[] aInDims = {1, 1};
			String[] aInFields = {"i1", "i2"};
			aIn = new MWStructArray(aInDims, aInFields);
			aIn.set("i1", 1, aIn_i1_1);
			aIn.set("i2", 1, aIn_i2_1);
			results = class1Instance.foo(aIn);
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			// Dispose of native resources
			MWArray.disposeArray(aIn);
			MWArray.disposeArray(aIn_i1_1);
			MWArray.disposeArray(aIn_i2_1);
			MWArray.disposeArray(results);
		}
	}

MATLAB: Create a Java Package with MATLAB Code Error

This is due to file access permissions. In my case, I got the following error.

C:\Program Files\makesqr\application>javac -classpath "C:\MATLAB\MATLAB_Runtime\v94\toolbox\javabuilder\jar\javabuilder.jar";.\makesqr.jar .\getmagic.java
.\getmagic.java:4: error: error while writing getmagic: .\getmagic.class (Access is denied)
class getmagic
^
1 error

javac tries to create getmagic.class file, but normal users do not have a permission to write a file under C:\Program Files.

I think there are two options.

Launch command prompt as Administrator, then execute the javac command.
Install makesqr package in another folder where normal users have a permission to write

Best Answer

Related Solutions

MATLAB: Example of coding a `struct` in Java when packaging Matlab function

MATLAB: Create a Java Package with MATLAB Code Error

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