graph

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);