Found this in my code hairball. YMMV...
import java.awt.Color;
import java.awt.image.BufferedImage;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.Enumeration;
import java.util.Vector;
import javax.imageio.ImageIO;
import com.representqueens.spark.BarGraph;
import com.representqueens.spark.LineGraph;
import com.representqueens.spark.SizeParams;
import com.webobjects.foundation.NSArray;
import com.webobjects.foundation.NSData;
public class AVSparklineUtility {
public static NSData smallBar(NSArray values) {
return graph(40, 15, values, false);
}
public static NSData largeBar(NSArray values) {
return graph(320, 120, values, false);
}
public static NSData smallLine(NSArray values) {
return graph(40, 15, values, true);
}
public static NSData largeLine(NSArray values) {
return graph(320, 120, values, true);
}
private static NSData graph(int width, int height, NSArray
integerArray, boolean isLine) {
SizeParams params;
BufferedImage i;
Enumeration e;
Vector<Integer> vector;
Integer[] values;
ByteArrayOutputStream baos;
params = new SizeParams(width, height, 1);
vector = new Vector<Integer>();
if (integerArray.count() > 0) {
e = integerArray.objectEnumerator();
while (e.hasMoreElements()) {
vector.add(new Integer((Integer)
e.nextElement()));
}
}
values = ((Integer[]) vector.toArray(new
Integer[vector.size()]));
if (isLine) {
i = LineGraph.createGraph(values, params,
Color.blue.darker());
}
else {
i = BarGraph.createGraph(values, params, Color.blue.brighter(),
Color.blue.darker(), Color.magenta);
}
baos = new ByteArrayOutputStream();
try {
ImageIO.write(i, "png", baos);
return new NSData(baos.toByteArray());
} catch (IOException ex) {
// TODO Auto-generated catch block
ex.printStackTrace();
return null;
}
}
}
On Jun 16, 2008, at 3:11 PM, Alex Cone wrote:
Anyone have a suggestion for something simple to drop into a WO
application to display sparklines?
Sparkline - Wikipedia, the free encyclopedia
__alex cone
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