public void Test3()
{
long start = Util.Time, end = start + 300 * 300;
string rrdFile = "test3.rrd";
string pngFile = "test3.png";
Console.WriteLine("Beginning Test3...");
RrdDef rrdDef = new RrdDef(rrdFile, start - 1, 300);
rrdDef.AddDatasource("a", "GAUGE", 600, Double.NaN, Double.NaN);
rrdDef.AddArchive("AVERAGE", 0.5, 1, 300);
rrdDef.AddArchive("MIN", 0.5, 12, 300);
rrdDef.AddArchive("MAX", 0.5, 12, 300);
RrdDb rrdDb = new RrdDb(rrdDef);
// update
for(long t = start; t < end; t += 300)
{
Sample sample = rrdDb.CreateSample(t);
sample.SetValue("a", Math.Sin(t / 3000.0) * 50 + 50);
sample.Update();
}
rrdDb.Close();
// graph
RrdGraphDef gDef = new RrdGraphDef();
gDef.SetTimePeriod(start, start + 86400);
gDef.Title = "RRDTool's MINMAX.pl demo";
gDef.TimeAxisLabel = "time";
gDef.Datasource("a", rrdFile, "a", "AVERAGE");
gDef.Datasource("b", rrdFile, "a", "MIN");
gDef.Datasource("c", rrdFile, "a", "MAX");
gDef.Area("a", Color.LightBlue, "real");
gDef.Line("b", Color.Blue, "min");
gDef.Line("c", Color.Lime, "max");
RrdGraph graph = new RrdGraph(gDef);
graph.SaveAsPNG(pngFile, 450, 0);
Console.WriteLine("Test3 Complete.");
}
public void Test4()
{
Console.WriteLine("Beginning Test4...");
// Time Values
DateTime[] timestamps = {
new DateTime(2004, 2, 1, 0, 0, 0),
new DateTime(2004, 2, 1, 2, 0, 0),
new DateTime(2004, 2, 1, 7, 0, 0),
new DateTime(2004, 2, 1, 14, 0, 0),
new DateTime(2004, 2, 1, 17, 0, 0),
new DateTime(2004, 2, 1, 19, 0, 0),
new DateTime(2004, 2, 1, 23, 0, 0),
new DateTime(2004, 2, 2, 0, 0, 0)
};
// Corresponding Data Values
double[] values = { 100, 250, 230, 370, 350, 300, 340, 350 };
LinearInterpolator linear = new LinearInterpolator(timestamps, values);
CubicSplineInterpolator spline = new CubicSplineInterpolator(timestamps, values);
// graph range
RrdGraphDef gDef = new RrdGraphDef(timestamps[0], timestamps[timestamps.Length - 1]);
// graph title, time and value axis labels
gDef.Title = "Plottable demonstration";
gDef.TimeAxisLabel = "time";
gDef.VerticalLabel = "water level [inches]";
// interpolated datasources
gDef.Datasource("linear", linear);
gDef.Datasource("spline", spline);
// splined plot will be an orange filled area
gDef.Area("spline", Color.Orange, "Spline interpolation");
// simply interpolated plot will be a red line
gDef.Line("linear", Color.Red, "Linear inteprolation@r");
// print average values for both interpolation methods
gDef.Gprint("spline", "AVERAGE", "Average spline value: @0 inches@r");
gDef.Gprint("linear", "AVERAGE", "Average linear value: @0 inches@r");
// create the graph...
RrdGraph graph = new RrdGraph(gDef);
// ...and save it somewhere
string filename = "test4.png";
graph.SaveAsPNG(filename, 300, 100);
Console.WriteLine("Test4 Complete.");
}
public void Test2()
{
Console.WriteLine("Beginning Test2...");
RrdDef rrdDef = new RrdDef("test2.rrd");
rrdDef.StartTime = 920804400L;
rrdDef.AddDatasource("speed", "COUNTER", 600, Double.NaN, Double.NaN);
rrdDef.AddArchive("AVERAGE", 0.5, 1, 24);
rrdDef.AddArchive("AVERAGE", 0.5, 6, 10);
RrdDb rrdDb = new RrdDb(rrdDef);
rrdDb.Close();
rrdDb = new RrdDb("test2.rrd");
Sample sample = rrdDb.CreateSample();
sample.SetAndUpdate("920804700:12345");
sample.SetAndUpdate("920805000:12357");
sample.SetAndUpdate("920805300:12363");
sample.SetAndUpdate("920805600:12363");
sample.SetAndUpdate("920805900:12363");
sample.SetAndUpdate("920806200:12373");
sample.SetAndUpdate("920806500:12383");
sample.SetAndUpdate("920806800:12393");
sample.SetAndUpdate("920807100:12399");
sample.SetAndUpdate("920807400:12405");
sample.SetAndUpdate("920807700:12411");
sample.SetAndUpdate("920808000:12415");
sample.SetAndUpdate("920808300:12420");
sample.SetAndUpdate("920808600:12422");
sample.SetAndUpdate("920808900:12423");
rrdDb.Close();
RrdGraphDef graphDef = new RrdGraphDef();
graphDef.SetTimePeriod(920804400L, 920808000L);
graphDef.Datasource("myspeed", "test2.rrd", "speed", "AVERAGE");
graphDef.Datasource("realspeed", "myspeed,1000,*");
graphDef.Line("realspeed", Color.Red, "speed", 2);
RrdGraph graph = new RrdGraph(graphDef);
graph.SaveAsPNG("test2a.png", 400, 100);
graphDef = new RrdGraphDef();
graphDef.SetTimePeriod(920804400L, 920808000L);
graphDef.VerticalLabel = "km/h";
graphDef.Overlay = "Sunset.jpg";
graphDef.Datasource("myspeed", "test2.rrd", "speed", "AVERAGE");
graphDef.Datasource("kmh", "myspeed,3600,*");
graphDef.Datasource("fast", "kmh,100,GT,kmh,0,IF");
graphDef.Datasource("good", "kmh,100,GT,0,kmh,IF");
graphDef.Area("good", Color.Lime, "Good speed");
graphDef.Area("fast", Color.Red, "Too fast");
graphDef.Hrule(100, Color.Blue, "Maximum allowed");
graph = new RrdGraph(graphDef);
graph.SaveAsPNG("test2b.png", 400, 100);
Console.WriteLine("Test2 Complete.");
}