Update of /cvsroot/jrobin/src
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv11013
Modified Files:
PlottableDemo.java
Log Message:
Nice plottable demo
Index: PlottableDemo.java
===================================================================
RCS file: /cvsroot/jrobin/src/PlottableDemo.java,v
retrieving revision 1.1
retrieving revision 1.2
diff -C2 -d -r1.1 -r1.2
*** PlottableDemo.java 20 Jan 2004 15:59:01 -0000 1.1
--- PlottableDemo.java 26 Jan 2004 12:38:01 -0000 1.2
***************
*** 3,46 ****
import java.awt.*;
import java.io.IOException;
! import java.util.GregorianCalendar;
class PlottableDemo {
public static void main(String[] args) throws RrdException, IOException {
! // create plottable datasource
! GregorianCalendar[] gc = {
! new GregorianCalendar(2004, 0, 1),
! new GregorianCalendar(2004, 0, 4),
! new GregorianCalendar(2004, 0, 6),
! new GregorianCalendar(2004, 0, 12),
! new GregorianCalendar(2004, 0, 18),
! new GregorianCalendar(2004, 0, 19),
! new GregorianCalendar(2004, 0, 21)
! };
! double values[] = {
! 1.2, 3.4, 2.7, 3.0, 1.1, 1.2, 1.6
};
! // four different imterpolation methods
! LinearInterpolator i1 = new LinearInterpolator(gc, values); // defaults to INTERPOLATE_LINEAR
! LinearInterpolator i2 = new LinearInterpolator(gc, values);
! i2.setInterpolationMethod(LinearInterpolator.INTERPOLATE_LEFT);
! LinearInterpolator i3 = new LinearInterpolator(gc, values);
! i3.setInterpolationMethod(LinearInterpolator.INTERPOLATE_RIGHT);
! CubicSplineInterpolator i4 = new CubicSplineInterpolator(gc, values);
// graph definition
! RrdGraphDef gdef = new RrdGraphDef(gc[0], gc[gc.length - 1]);
gdef.setTitle("Plottable demonstration");
gdef.setTimeAxisLabel("days of our lives");
gdef.setVerticalLabel("inspiration");
gdef.datasource("linear", i1);
! gdef.datasource("left", i2);
! gdef.datasource("right", i3);
! gdef.datasource("spline", i4);
! gdef.area("linear", Color.RED, "Linear");
! gdef.line("left", Color.BLUE, "Left", 2);
! gdef.line("right", Color.GREEN, "Right@L", 2);
! gdef.line("spline", Color.MAGENTA, "Spline@R", 2);
gdef.setTimeAxis(TimeAxisUnit.DAY, 1, TimeAxisUnit.DAY, 1, "dd", true);
RrdGraph g = new RrdGraph(gdef);
! g.saveAsPNG("plottable.png", 500, 250);
}
}
--- 3,42 ----
import java.awt.*;
import java.io.IOException;
! import java.util.Date;
class PlottableDemo {
public static void main(String[] args) throws RrdException, IOException {
! final long t0 = new Date().getTime() / 1000L, dt = 86400L;
! final int n = 10;
! final long t1 = t0 + (n - 1) * dt;
! Plottable p = new Plottable() {
! public double getValue(long t) {
! double x = (t - t0) / (double)(t1 - t0);
! return Math.exp(-x * 2) * Math.cos(x * 7 * Math.PI);
! }
};
!
! long t[] = new long[n];
! double x[] = new double[n];
! for(int i = 0; i < n; i++) {
! t[i] = t0 + i * dt;
! x[i] = p.getValue(t[i]);
! }
! LinearInterpolator i1 = new LinearInterpolator(t, x); // defaults to INTERPOLATE_LINEAR
! CubicSplineInterpolator i2 = new CubicSplineInterpolator(t, x);
// graph definition
! RrdGraphDef gdef = new RrdGraphDef(t0, t1);
gdef.setTitle("Plottable demonstration");
gdef.setTimeAxisLabel("days of our lives");
gdef.setVerticalLabel("inspiration");
+ gdef.datasource("real", p);
gdef.datasource("linear", i1);
! gdef.datasource("spline", i2);
! gdef.line("real", Color.BLUE, "Real values", 1);
! gdef.line("linear", Color.RED, "Linear interpolation", 1);
! gdef.line("spline", Color.MAGENTA, "Spline interpolation@r", 1);
gdef.setTimeAxis(TimeAxisUnit.DAY, 1, TimeAxisUnit.DAY, 1, "dd", true);
RrdGraph g = new RrdGraph(gdef);
! g.saveAsPNG("plottable2.png", 400, 200);
}
}
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