Class RGraphicsPlugin

java.lang.Object
  |
  +--netscape.plugin.Plugin
        |
        +--RNetscape
              |
              +--RGraphicsPlugin

public class RGraphicsPlugin

extends RNetscape

A LiveConnect plugin class for an S graphics device that is embeddable within an Netscape page and that allows JavaScript and other plugins to communicate with that device.

Fields inherited from class RNetscape

debug, DefaultDebug

Constructor Summary

RGraphicsPlugin()
Default constructor.

Method Summary

java.lang.Object	eval(java.lang.String cmd) Intercepts the inherited eval() method to ensure that the associated device is active.
int	getActive() Get the number of the currently active R graphics device.
int	getDeviceNumber() Get the number of the graphics device associated with this plugin.
void	hist(double[] var) Create a histogram displaying the given numbers.
void	hist(double[] var, java.lang.String xlab)
void	hist(java.lang.String varName) Create a histogram of the specified variable found in the R global environment.
void	image() A call to the image() function.
void	init() Basic init() method.
java.lang.Object	par() This returns a JavaScript object containing the settings of all the graphics parameters for this device.
java.lang.Object	par(java.lang.String which) This returns the setting for the specified parameter for this device.
void	par(java.lang.String which, java.lang.Object value) Sets the specified element of the graphics parameter list for this device to the given value.
void	plot(double[] x) Plot the values of the array against the values 1, 2, 3, ..., x.length
void	plot(double[] x, double[] y) Create a scatterplot of the two arrays against each other.
void	plot(java.lang.Object x)
void	plot(java.lang.Object x, java.lang.Object y)
void	plot(java.lang.Object x, java.lang.String xlab)
void	plot(java.lang.String x) Plot a single variable in the R global environment, producing a scatterplot of the values 1:length(x) and x itself.
void	plot(java.lang.String x, java.lang.String y) Plot two variables in the R global environment.
void	setActive() Set the associated R graphics device to be the active one to which graphics commands will be sent and displayed.
void	setActiveDevice(int which) Change the currently active R graphics device to the one identified by the specified number.

Methods inherited from class RNetscape

call, call, call, call, call, call, call, call, call, call, call, call1ArgStringFunction, call1ArgStringFunction, convertArray, eval, evalPrint, exists, get, getDebug, getDummyJSObject, library, namedArgCall, namedArgCall, namedArgCall, remove, setDebug, source

Methods inherited from class netscape.plugin.Plugin

destroy, getPeer, getWindow, isActive

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

RGraphicsPlugin

public RGraphicsPlugin()

Default constructor.

Method Detail

init

public void init()

Basic init() method.

Overrides:

init in class RNetscape

hist

public void hist(java.lang.String varName)

Create a histogram of the specified variable found in the R global environment.

hist

public void hist(double[] var)

Create a histogram displaying the given numbers.

hist

public void hist(double[] var,
                 java.lang.String xlab)

plot

public void plot(double[] x)

Plot the values of the array against the values 1, 2, 3, ..., x.length

plot

public void plot(java.lang.Object x)

plot

public void plot(java.lang.Object x,
                 java.lang.String xlab)

plot

public void plot(java.lang.Object x,
                 java.lang.Object y)

plot

public void plot(double[] x,
                 double[] y)

Create a scatterplot of the two arrays against each other.

plot

public void plot(java.lang.String x)

Plot a single variable in the R global environment, producing a scatterplot of the values 1:length(x) and x itself.

plot

public void plot(java.lang.String x,
                 java.lang.String y)

Plot two variables in the R global environment.

image

public void image()

A call to the image() function.

par

public java.lang.Object par()

This returns a JavaScript object containing the settings of all the graphics parameters for this device.

Returns:

a JavaScript object whose members are the elements returned by calling the S function par().

par

public java.lang.Object par(java.lang.String which)

This returns the setting for the specified parameter for this device. The valid values for {@code which which} are the names of the elements returned from a call to par().

Parameters:

which - the name of the field in the graphics parameters being queried.

Returns:

a JavaScript object containing the value of the setting.

par

public void par(java.lang.String which,
                java.lang.Object value)

Sets the specified element of the graphics parameter list for this device to the given value.

eval

public java.lang.Object eval(java.lang.String cmd)

Intercepts the inherited eval() method to ensure that the associated device is active.

Overrides:

eval in class RNetscape

Tags copied from class: RNetscape

Parameters:

cmd - the S expression to be evaluated.

Returns:

the result of evaluating the S expression, converted to the corresponding JavaScript type.

setActiveDevice

public void setActiveDevice(int which)

Change the currently active R graphics device to the one identified by the specified number. We currently add one to this before calling the low-level setDevice C routine.

getActive

public int getActive()

Get the number of the currently active R graphics device.

setActive

public void setActive()

Set the associated R graphics device to be the active one to which graphics commands will be sent and displayed.

getDeviceNumber

public int getDeviceNumber()

Get the number of the graphics device associated with this plugin.