if (v0.time == v1.time)
return (v0.value + v1.value) / 2;
- return (v0.value * (v1.time - t) + v1.value * (t - v0.time)) / v1.time - v0.time;
+ return (v0.value * (v1.time - t) + v1.value * (t - v0.time)) / (v1.time - v0.time);
}
private int after_index(double time) {
/* Compute a value for an arbitrary time */
public double value(double time) {
int after = after_index(time);
- if (after == 0)
- return values.get(0).value;
- if (after == values.size())
- return values.get(after - 1).value;
+ double ret;
- return lerp(values.get(after-1), values.get(after), time);
+ if (after == 0)
+ ret = values.get(0).value;
+ else if (after == values.size())
+ ret = values.get(after - 1).value;
+ else {
+ AltosTimeValue b = values.get(after-1);
+ AltosTimeValue a = values.get(after);
+ ret = lerp(b, a, time);
+ }
+ return ret;
}
/* Find the value just before an arbitrary time */
return values.get(after).value;
}
+ public double time_of(double value) {
+ double last = AltosLib.MISSING;
+ for (AltosTimeValue v : values) {
+ if (v.value >= value)
+ return v.time;
+ last = v.time;
+ }
+ return last;
+ }
+
public int size() {
return values.size();
}
return max;
}
+ public double max(double start_time, double end_time) {
+ double max = AltosLib.MISSING;
+ for (AltosTimeValue tv : values) {
+ if (start_time <= tv.time && tv.time <= end_time)
+ if (max == AltosLib.MISSING || tv.value > max)
+ max = tv.value;
+ }
+ return max;
+ }
+
public double min() {
double min = AltosLib.MISSING;
for (AltosTimeValue tv : values) {
return min;
}
+ public double min(double start_time, double end_time) {
+ double min = AltosLib.MISSING;
+ for (AltosTimeValue tv : values) {
+ if (start_time <= tv.time && tv.time <= end_time)
+ if (min == AltosLib.MISSING || tv.value < min)
+ min = tv.value;
+ }
+ return min;
+ }
+
+ public double average() {
+ double total = 0;
+ int count = 0;
+ for (AltosTimeValue tv : values) {
+ total += tv.value;
+ count++;
+ }
+ if (count == 0)
+ return AltosLib.MISSING;
+ return total / count;
+ }
+
+ public double average(double start_time, double end_time) {
+ double total = 0;
+ int count = 0;
+ for (AltosTimeValue tv : values) {
+ if (start_time <= tv.time && tv.time <= end_time) {
+ total += tv.value;
+ count++;
+ }
+ }
+ if (count == 0)
+ return AltosLib.MISSING;
+ return total / count;
+ }
+
public AltosTimeSeries integrate(AltosTimeSeries integral) {
double value = 0.0;
double pvalue = 0.0;
}
pvalue = v.value;
time = v.time;
-// System.out.printf("%g %g %g\n", time, v.value, value);
integral.add(time, value);
}