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/*
* Copyright © 2017 Keith Packard <keithp@keithp.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*/
package org.altusmetrum.altoslib_11;
import java.util.*;
public class AltosTimeSeries implements Iterable<AltosTimeValue> {
public String label;
public AltosUnits units;
List<AltosTimeValue> values;
public void add(double x, double y) {
values.add(new AltosTimeValue(x, y));
}
public Iterator<AltosTimeValue> iterator() {
return values.iterator();
}
public void integrate(AltosTimeSeries integral) {
double y = 0.0;
double x = 0.0;
boolean start = true;
for (AltosTimeValue v : values) {
if (start) {
y = 0.0;
x = v.x;
start = false;
} else {
y += v.y * (v.x - x);
x = v.x;
}
integral.add(x, y);
}
}
public void differentiate(AltosTimeSeries diff) {
double y = 0.0;
double x = 0.0;
boolean start = true;
for (AltosTimeValue v: values) {
if (start) {
y = 0.0;
x = v.x;
start = false;
} else {
double dx = v.x - x;
double dy = v.y - y;
x = v.x;
y = v.y;
if (dx != 0)
diff.add(x, dy);
}
}
}
private int find_left(int i, double dt) {
int j;
double t = values.get(i).x - dt;
for (j = i; j > 0; j--) {
if (values.get(j).x < t)
break;
}
return j;
}
public void filter(AltosTimeSeries out, double width) {
for (int i = 0; i < values.size(); i++) {
}
}
public AltosTimeSeries(String label, AltosUnits units) {
this.label = label;
this.units = units;
this.values = new ArrayList<AltosTimeValue>();
}
}
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