Error:
Not able to save graph as a PNG file. Compilation error: cannot find symbol [javac] symbol : method saveAsPNG(java.lang.String,int,int)
Solution:
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 rrdGraph.render (g); // Graphics context no longer needed so it can be disposed g.dispose();