org.statcato.graph

Class GraphUtils

java.lang.Object

org.statcato.graph.GraphUtils

public class GraphUtils
extends java.lang.Object

Utilities for graph generation and manipulation.

Since:

1.0

See Also:

org.jfree.chart

Constructor Summary

Constructors

Constructor and Description
GraphUtils()

Method Summary

Modifier and Type	Method and Description
static javax.swing.Icon	createGraphImageLabel(JFreeChart plot)
static void	drawCharts(java.awt.Graphics2D g, java.util.ArrayList<JFreeChart> charts, int x, int y, int width, int height) Draws the charts on the given Java@d graphics device, with two charts per row at the given position.
static java.awt.image.BufferedImage	joinBufferedChartImages(java.util.ArrayList<JFreeChart> charts) Returns a BufferedImage that is the result of joining a list of charts
static void	writeBufferedImageAsPNG(java.io.OutputStream out, java.awt.image.BufferedImage image, int width, int height) Writes a chart to an output stream in PNG format.

Methods inherited from class java.lang.Object

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

Constructor Detail

GraphUtils

public GraphUtils()

Method Detail

createGraphImageLabel

public static javax.swing.Icon createGraphImageLabel(JFreeChart plot)

joinBufferedChartImages

public static java.awt.image.BufferedImage joinBufferedChartImages(java.util.ArrayList<JFreeChart> charts)

Returns a BufferedImage that is the result of joining a list of charts

Parameters:

charts - an ArrayList of JFreeChart objects

Returns:

BufferedImage

drawCharts

public static void drawCharts(java.awt.Graphics2D g,
                              java.util.ArrayList<JFreeChart> charts,
                              int x,
                              int y,
                              int width,
                              int height)

Draws the charts on the given Java@d graphics device, with two charts per row at the given position.

Parameters:

g - graphics device

charts - list of charts

x - x-position

y - y-position

width - width

height - height

writeBufferedImageAsPNG

public static void writeBufferedImageAsPNG(java.io.OutputStream out,
                                           java.awt.image.BufferedImage image,
                                           int width,
                                           int height)
                                    throws java.io.IOException

Writes a chart to an output stream in PNG format.

Parameters:

out - the output stream (null not permitted).

image - the BufferedImage object

width - the image width.

height - the image height.

Throws:

java.io.IOException - if there are any I/O errors.