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Will Charczuk 2017-04-29 13:21:26 -07:00
parent 376a8efa36
commit 255390c710
1 changed files with 0 additions and 129 deletions
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129
util/generate.go
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@ -59,132 +59,3 @@ func (g generate) RandomValuesWithAverage(samples int, average, scale float64) S
return Sequence{Array(values)} return Sequence{Array(values)}
} }
// Days generates a sequence of timestamps by day, from -days to today.
func (g generate) Days(days int) []time.Time {
var values []time.Time
for day := days; day >= 0; day-- {
values = append(values, time.Now().AddDate(0, 0, -day))
}
return values
}
func (g generate) MarketHours(from, to time.Time, marketOpen, marketClose time.Time, isHoliday HolidayProvider) []time.Time {
var times []time.Time
cursor := Date.On(marketOpen, from)
toClose := Date.On(marketClose, to)
for cursor.Before(toClose) || cursor.Equal(toClose) {
todayOpen := Date.On(marketOpen, cursor)
todayClose := Date.On(marketClose, cursor)
isValidTradingDay := !isHoliday(cursor) && Date.IsWeekDay(cursor.Weekday())
if (cursor.Equal(todayOpen) || cursor.After(todayOpen)) && (cursor.Equal(todayClose) || cursor.Before(todayClose)) && isValidTradingDay {
times = append(times, cursor)
}
if cursor.After(todayClose) {
cursor = Date.NextMarketOpen(cursor, marketOpen, isHoliday)
} else {
cursor = Date.NextHour(cursor)
}
}
return times
}
func (g generate) MarketHourQuarters(from, to time.Time, marketOpen, marketClose time.Time, isHoliday HolidayProvider) []time.Time {
var times []time.Time
cursor := Date.On(marketOpen, from)
toClose := Date.On(marketClose, to)
for cursor.Before(toClose) || cursor.Equal(toClose) {
isValidTradingDay := !isHoliday(cursor) && Date.IsWeekDay(cursor.Weekday())
if isValidTradingDay {
todayOpen := Date.On(marketOpen, cursor)
todayNoon := Date.NoonOn(cursor)
today2pm := Date.On(Date.Time(14, 0, 0, 0, cursor.Location()), cursor)
todayClose := Date.On(marketClose, cursor)
times = append(times, todayOpen, todayNoon, today2pm, todayClose)
}
cursor = Date.NextDay(cursor)
}
return times
}
func (g generate) MarketDayCloses(from, to time.Time, marketOpen, marketClose time.Time, isHoliday HolidayProvider) []time.Time {
var times []time.Time
cursor := Date.On(marketOpen, from)
toClose := Date.On(marketClose, to)
for cursor.Before(toClose) || cursor.Equal(toClose) {
isValidTradingDay := !isHoliday(cursor) && Date.IsWeekDay(cursor.Weekday())
if isValidTradingDay {
todayClose := Date.On(marketClose, cursor)
times = append(times, todayClose)
}
cursor = Date.NextDay(cursor)
}
return times
}
func (g generate) MarketDayAlternateCloses(from, to time.Time, marketOpen, marketClose time.Time, isHoliday HolidayProvider) []time.Time {
var times []time.Time
cursor := Date.On(marketOpen, from)
toClose := Date.On(marketClose, to)
for cursor.Before(toClose) || cursor.Equal(toClose) {
isValidTradingDay := !isHoliday(cursor) && Date.IsWeekDay(cursor.Weekday())
if isValidTradingDay {
todayClose := Date.On(marketClose, cursor)
times = append(times, todayClose)
}
cursor = cursor.AddDate(0, 0, 2)
}
return times
}
func (g generate) MarketDayMondayCloses(from, to time.Time, marketOpen, marketClose time.Time, isHoliday HolidayProvider) []time.Time {
var times []time.Time
cursor := Date.On(marketClose, from)
toClose := Date.On(marketClose, to)
for cursor.Equal(toClose) || cursor.Before(toClose) {
isValidTradingDay := !isHoliday(cursor) && Date.IsWeekDay(cursor.Weekday())
if isValidTradingDay {
times = append(times, cursor)
}
cursor = Date.NextDayOfWeek(cursor, time.Monday)
}
return times
}
func (g generate) Hours(start time.Time, totalHours int) []time.Time {
times := make([]time.Time, totalHours)
last := start
for i := 0; i < totalHours; i++ {
times[i] = last
last = last.Add(time.Hour)
}
return times
}
// HoursFilled adds zero values for the data bounded by the start and end of the xdata array.
func (g generate) HoursFilled(xdata []time.Time, ydata []float64) ([]time.Time, []float64) {
start := Date.Start(xdata)
end := Date.End(xdata)
totalHours := Math.AbsInt(Date.DiffHours(start, end))
finalTimes := g.Hours(start, totalHours+1)
finalValues := make([]float64, totalHours+1)
var hoursFromStart int
for i, xd := range xdata {
hoursFromStart = Date.DiffHours(start, xd)
finalValues[hoursFromStart] = ydata[i]
}
return finalTimes, finalValues
}