void compute(const RideFile *ride, const Zones *, int,
const HrZones *, int,
const QHash<QString,RideMetric*> &,
const Context *) {
// LNP only makes sense for running and it needs recIntSecs > 0
if (!ride->isRun() || ride->recIntSecs() == 0) {
setValue(0.0);
setCount(0);
return;
}
// unconst naughty boy, get athlete's data
RideFile *uride = const_cast<RideFile*>(ride);
double weight = uride->getWeight();
double height = uride->getHeight();
int rollingwindowsize120 = 120 / ride->recIntSecs();
int rollingwindowsize30 = 30 / ride->recIntSecs();
double total = 0.0;
int count = 0;
// no point doing a rolling average if the
// sample rate is greater than the rolling average
// window!!
if (rollingwindowsize30 > 1) {
QVector<double> rollingSpeed(rollingwindowsize120);
QVector<double> rollingSlope(rollingwindowsize120);
QVector<double> rollingPower(rollingwindowsize30);
int index120 = 0;
int index30 = 0;
double sumSpeed = 0.0;
double sumSlope = 0.0;
double sumPower = 0.0;
double initial_speed = 0.0;
// loop over the data and convert to a rolling
// average for the given windowsize
for (int i=0; i<ride->dataPoints().size(); i++) {
double speed = ride->dataPoints()[i]->kph/3.6;
sumSpeed += speed;
sumSpeed -= rollingSpeed[index120];
rollingSpeed[index120] = speed;
double speed120 = sumSpeed/std::min(count+1, rollingwindowsize120); // speed rolling average
double slope = ride->dataPoints()[i]->slope/100.0;
sumSlope += slope;
sumSlope -= rollingSlope[index120];
rollingSlope[index120] = slope;
double slope120 = sumSlope/std::min(count+1, rollingwindowsize120); // slope rolling average
// running power based on 120sec averages
double watts = running_power(weight, height, speed120, slope120, speed120*ride->recIntSecs(), initial_speed);
initial_speed = speed120;
sumPower += watts;
sumPower -= rollingPower[index30];
rollingPower[index30] = watts;
total += pow(sumPower/std::min(count+1, rollingwindowsize30), 4); // raise rolling average to 4th power
count ++;
// move index on/round
index120 = (index120 >= rollingwindowsize120-1) ? 0 : index120+1;
index30 = (index30 >= rollingwindowsize30-1) ? 0 : index30+1;
}
}
if (count) {
lnp = pow(total/count, 0.25);
secs = count * ride->recIntSecs();
} else {
lnp = secs = 0;
}
setValue(lnp);
setCount(secs);
}
void compute(RideItem *item, Specification spec, const QHash<QString,RideMetric*> &) {
// no ride or no samples
if (spec.isEmpty(item->ride()) ||
!item->isRun || item->ride()->recIntSecs() == 0) {
setValue(RideFile::NIL);
setCount(0);
return;
}
double weight = item->ride()->getWeight();
double height = item->ride()->getHeight();
int rollingwindowsize120 = 120 / item->ride()->recIntSecs();
int rollingwindowsize30 = 30 / item->ride()->recIntSecs();
double total = 0.0;
int count = 0;
// no point doing a rolling average if the
// sample rate is greater than the rolling average
// window!!
if (rollingwindowsize30 > 1) {
QVector<double> rollingSpeed(rollingwindowsize120);
QVector<double> rollingSlope(rollingwindowsize120);
QVector<double> rollingPower(rollingwindowsize30);
int index120 = 0;
int index30 = 0;
double sumSpeed = 0.0;
double sumSlope = 0.0;
double sumPower = 0.0;
double initial_speed = 0.0;
// loop over the data and convert to a rolling
// average for the given windowsize
RideFileIterator it(item->ride(), spec);
while (it.hasNext()) {
struct RideFilePoint *point = it.next();
double speed = point->kph/3.6;
sumSpeed += speed;
sumSpeed -= rollingSpeed[index120];
rollingSpeed[index120] = speed;
double speed120 = sumSpeed/std::min(count+1, rollingwindowsize120); // speed rolling average
double slope = point->slope/100.0;
sumSlope += slope;
sumSlope -= rollingSlope[index120];
rollingSlope[index120] = slope;
double slope120 = sumSlope/std::min(count+1, rollingwindowsize120); // slope rolling average
// running power based on 120sec averages
double watts = running_power(weight, height, speed120, slope120, speed120*item->ride()->recIntSecs(), initial_speed);
initial_speed = speed120;
sumPower += watts;
sumPower -= rollingPower[index30];
rollingPower[index30] = watts;
total += pow(sumPower/std::min(count+1, rollingwindowsize30), 4); // raise rolling average to 4th power
count ++;
// move index on/round
index120 = (index120 >= rollingwindowsize120-1) ? 0 : index120+1;
index30 = (index30 >= rollingwindowsize30-1) ? 0 : index30+1;
}
}
if (count) {
lnp = pow(total/count, 0.25);
secs = count * item->ride()->recIntSecs();
} else {
lnp = secs = 0;
}
setValue(lnp);
setCount(secs);
}