/**
* Creates graph from the corresponding {@link RrdGraphDef} object.
*
* @param gdef Graph definition
* @throws IOException Thrown in case of I/O error
* @throws RrdException Thrown in case of JRobin related error
*/
public RrdGraph(RrdGraphDef gdef) {
this.gdef = gdef;
signature = gdef.getSignature();
worker = new ImageWorker(100, 100); // Dummy worker, just to start with something
try {
createGraph();
}
finally {
worker.dispose();
worker = null;
dproc = null;
}
}
public static void saveAsPng(string filename, List<DateTime> dates, string hostOrIp,
string routeToDestination, string networkInteface, string userNotes)
{
// RrdGraph output is not perfect, but it does produce a graph.
// For better results, use some other graph library, eg
// could try Java https://code.google.com/p/rrd4j/
// or http://oldwww.jrobin.org/api/graphingapi.html
// or possibly https://code.google.com/p/rrd4net/source/browse/#svn%2Ftrunk%2Frrd4n.Graph
RrdGraphDef def = new RrdGraphDef();
def.setTimeSpan(dates[0].GetTimestamp(), dates[dates.Count - 1].GetTimestamp());
def.setVerticalLabel("ms");
def.setTitle("Ping times to " + hostOrIp + " via " + routeToDestination);
def.datasource("in", filename, "input", ConsolidationFunction.AVERAGE);
def.line("in", Color.Green, "ping time");
def.imageFormat="png";
def.filename=filename+"."+def.imageFormat;
if (File.Exists(def.filename))
{
File.Delete(def.filename);
}
RrdGraph g = new RrdGraph(def);
}
