public void Scale(float min, float max, int step, int sdNumber)
{
var vv = Metric.GetVector(0, step.ToString(), ":");
var stat = MyStatisticsMath.SimpleStatistics(vv);
float vmax = (float)(stat.Average + sdNumber * stat.StandardDeviation);
float vmin = (float)(stat.Average - sdNumber * stat.StandardDeviation);
float vdelta = vmax - vmin;
float ndelta = max - min;
float value = 0;
for (int i = 0; i < vv.Length; i++)
{
value = Metric[0, step, i];
if (value < vmin)
{
Metric[0, step, i] = min;
}
else if (value > vmax)
{
Metric[0, step, i] = max;
}
else
{
Metric[0, step, i] = min + (value - vmin) / vdelta * ndelta;
}
}
}
public StatisticsInfo GetValueStatistics(ObservationSeries series)
{
string sql = string.Format("select DateTimeUTC, DataValue from DataValues where SiteID={0} and VariableID={1} order by DateTimeUTC",
series.SiteID, series.VariableID);
var dt = ODMDB.QueryDataTable(sql).AsEnumerable();
var dates = from dr in dt select dr.Field <DateTime>("DateTimeUTC");
var values = from dr in dt select dr.Field <double>("DataValue");
var filtered = from vv in values where vv != 0 select vv;
var info = MyStatisticsMath.SimpleStatistics(filtered.ToArray());
return(info);
}
public void Scale(int step, float min, float max)
{
var vv = Metric.GetVector(0, step.ToString(), ":");
var stat = MyStatisticsMath.SimpleStatistics(vv);
float vmax = (float)stat.Max;
float vmin = (float)stat.Min;
float vdelta = vmax - vmin;
float ndelta = max - min;
for (int i = 0; i < vv.Length; i++)
{
Metric[0, step, i] = min + (Metric[0, step, i] - vmin) / vdelta * ndelta;
}
}