helps to add the file.

This commit is contained in:
Will Charczuk 2017-05-13 13:00:35 -07:00
parent 03708a90ef
commit 73e3e439c5

75
candlestick_series.go Normal file
View file

@ -0,0 +1,75 @@
package chart
import (
"fmt"
"time"
)
type CandleValue struct {
Timestamp time.Time
High float64
Low float64
Open float64
Close float64
}
// CandlestickSeries is a special type of series that takes a norma value provider
// and maps it to day value stats (high, low, open, close).
type CandlestickSeries struct {
Name string
Style Style
YAxis YAxisType
InnerSeries ValuesProvider
}
// GetName implements Series.GetName.
func (cs CandlestickSeries) GetName() string {
return cs.Name
}
// GetStyle implements Series.GetStyle.
func (cs CandlestickSeries) GetStyle() Style {
return cs.Style
}
// GetYAxis returns which yaxis the series is mapped to.
func (cs CandlestickSeries) GetYAxis() YAxisType {
return cs.YAxis
}
// CandleValues returns the candlestick values for each day represented by the inner series.
func (cs CandlestickSeries) CandleValues() []CandleValue {
// for each "day" represented by the inner series
// compute the open (i.e. the first value at or near market open)
// compute the close (i.e. the last value at or near market close)
// compute the high, or the max
// compute the low, or the min
totalValues := cs.InnerSeries.Len()
var values []CandleValue
var day int
for i := 0; i < totalValues; i++ {
if day == 0 {
// extract day value from time value
}
if
}
return values
}
// Render implements Series.Render.
func (cs CandlestickSeries) Render(r Renderer, canvasBox Box, xrange, yrange Range, defaults Style) {
//style := cs.Style.InheritFrom(defaults)
//Draw.CandlestickSeries(r, canvasBox, xrange, yrange, style, cs)
}
// Validate validates the series.
func (cs CandlestickSeries) Validate() error {
if cs.InnerSeries == nil {
return fmt.Errorf("histogram series requires InnerSeries to be set")
}
return nil
}