MATLAB BUILDER JA 2 User's Guide download pdf (Page 232)

5 Sample Applications (Java)

Plot Example

The purpose of the example is to show you how to do the following:

• UseMATLABBuilderforJavatoconvertaMATLABfunction(

drawplot)

to a m ethod of a Java class (

plotter) and wrap the class in a Java

component (

plotdemo).

• Access the component in a Java application (

createplot.java)by

instantiating the

plotter class and using the MWArray class library to

handle data conversion.

Note For complete reference inform atio n about the MWArray class

hierarchy, see the

com.mathworks.toolbox.javabuilder package.

• Build and run the createplot.java application.

The

drawplot function displays a plot of input parameters x and y.

Plot Example: Step-by-Step Procedure

1 Ifyouhavenotalreadydoneso,copythefilesforthisexampleasfollows:

a. Copy the following directory that ships with MATLAB to your work

directory:

matlabroot\t

oolbox\javabuilder\Examples\PlotExample

b. At the M ATLAB command prompt, cd to the new PlotExample

subdirectory in your w ork directory.

2 If you have not

already done so, set the environment variables that are

required on a d

evelopment machine. See “Settings for Environment

Variables (De

velopment Machine)” on page 6-2.

3 Write the drawplot function as you w ould any MATLAB function.

The following code defines the

drawplot function:

function drawplot(x,y)

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MATLAB BUILDER JA 2 User's Guide Page 232