mirror of
https://github.com/GoldenCheetah/GoldenCheetah.git
synced 2026-02-14 08:38:45 +00:00
7bb9cf5462
A user configurable chart for showing ride metrics and other calculated values over time. * Uses SQLITE database to store metrics * Supports any metric available from the metric factory * Adds new MaxHr, VI, Peak Power and Time In Zone metric * Also includes LTS/STS/SB for PM charting * Aggregates in days, weeks, months or years * Reads and Updates seasons.xml * Adds cycles and adhoc date ranges in seasons.xml * Date ranges can be selected on the plot with shift-left click * Allows users to customise preferences for color, symbols et al * Allows user to customise metric names and unit names * Supports smooth curves and topN highlighting * Has a linear regress trend line function * Allows users to save charts to charts.xml * A default charts.xml is built-in * A chart manager to import/export/rename/delete charts etc * Provides a tooltip to provide basic datapoint information * Performance Manager adjusted to use the MetricDB * User configurable setting for SB calculation (today/tomorrow)
57 lines
1.6 KiB
C++
57 lines
1.6 KiB
C++
/*
|
|
* Copyright (c) 2010 Mark Liversedge (liversedge@gmail.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.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc., 51
|
|
* Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include <math.h>
|
|
#include <float.h>
|
|
#include "LTMTrend.h"
|
|
|
|
#include <QDebug>
|
|
|
|
LTMTrend::LTMTrend(double *xdata, double *ydata, int count) :
|
|
points(0.0), sumX(0.0), sumY(0.0), sumXsquared(0.0),
|
|
sumYsquared(0.0), sumXY(0.0), a(0.0), b(0.0)
|
|
{
|
|
if (count == 0) return;
|
|
|
|
for (int i = 0; i < count; i++) addXY(xdata[i], ydata[i]);
|
|
}
|
|
|
|
void
|
|
LTMTrend::addXY(double& x, double& y)
|
|
{
|
|
points++;
|
|
sumX += x;
|
|
sumY += y;
|
|
sumXsquared += x * x;
|
|
sumYsquared += y * y;
|
|
sumXY += x * y;
|
|
calc();
|
|
}
|
|
|
|
void
|
|
LTMTrend::calc()
|
|
{
|
|
if (points > 2) {
|
|
if (fabs( double(points) * sumXsquared - sumX * sumX) > DBL_EPSILON) {
|
|
b = ( double(points) * sumXY - sumY * sumX) /
|
|
( double(points) * sumXsquared - sumX * sumX);
|
|
a = (sumY - b * sumX) / double(points);
|
|
}
|
|
}
|
|
}
|