Not able to save graph as a PNG file.
Compilation error: cannot find symbol
[javac] symbol : method saveAsPNG(java.lang.String,int,int)
saveAsPNG does not seem to be there in JRobin anymore. Use the
RrdGraph.render (java.awt.Graphics g) method. For example,
// Create a buffered image in which the graph would be drawn
BufferedImage bImage = new BufferedImage(imageWidth, imageHeight, BufferedImage.TYPE_INT_RGB);
// Create a graphics context on the buffered image
Graphics2D g = bImage.createGraphics();
// Define the graph ...
RrdGraphDef rrdGraphDef = new RrdGraphDef ();
// Complete the graph definition
// Make the graph
RrdGraph rrdGraph = new RrdGraph (rrdGraphDef);
// render the graph
// Graphics context no longer needed so it can be disposed