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adding lastvalueprovider interface and relevant methods.

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This commit is contained in:
Will Charczuk 2016-07-18 12:57:10 -07:00
parent c14ab6a4b2
commit 2603c67e10
5 changed files with 27 additions and 5 deletions
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5
continuous_series.go
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@ -31,6 +31,11 @@ func (cs ContinuousSeries) GetValue(index int) (float64, float64) {
return cs.XValues[index], cs.YValues[index] return cs.XValues[index], cs.YValues[index]
} }
// GetLastValue gets the last value.
func (cs ContinuousSeries) GetLastValue() (float64, float64) {
return cs.XValues[len(cs.XValues)-1], cs.YValues[len(cs.YValues)-1]
}
// GetValueFormatters returns value formatter defaults for the series. // GetValueFormatters returns value formatter defaults for the series.
func (cs ContinuousSeries) GetValueFormatters() (x, y ValueFormatter) { func (cs ContinuousSeries) GetValueFormatters() (x, y ValueFormatter) {
x = FloatValueFormatter x = FloatValueFormatter

4
ema_series.go
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@ -52,7 +52,7 @@ func (ema EMASeries) GetSigma() float64 {
} }
// GetValue gets a value at a given index. // GetValue gets a value at a given index.
func (ema EMASeries) GetValue(index int) (x float64, y float64) { func (ema EMASeries) GetValue(index int) (x, y float64) {
if ema.InnerSeries == nil { if ema.InnerSeries == nil {
return return
} }
@ -64,7 +64,7 @@ func (ema EMASeries) GetValue(index int) (x float64, y float64) {
// GetLastValue computes the last moving average value but walking back window size samples, // GetLastValue computes the last moving average value but walking back window size samples,
// and recomputing the last moving average chunk. // and recomputing the last moving average chunk.
func (ema EMASeries) GetLastValue() (x float64, y float64) { func (ema EMASeries) GetLastValue() (x, y float64) {
if ema.InnerSeries == nil { if ema.InnerSeries == nil {
return return
} }

4
sma_series.go
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@ -36,7 +36,7 @@ func (sma SMASeries) Len() int {
} }
// GetValue gets a value at a given index. // GetValue gets a value at a given index.
func (sma SMASeries) GetValue(index int) (x float64, y float64) { func (sma SMASeries) GetValue(index int) (x, y float64) {
if sma.InnerSeries == nil { if sma.InnerSeries == nil {
return return
} }
@ -48,7 +48,7 @@ func (sma SMASeries) GetValue(index int) (x float64, y float64) {
// GetLastValue computes the last moving average value but walking back window size samples, // GetLastValue computes the last moving average value but walking back window size samples,
// and recomputing the last moving average chunk. // and recomputing the last moving average chunk.
func (sma SMASeries) GetLastValue() (x float64, y float64) { func (sma SMASeries) GetLastValue() (x, y float64) {
if sma.InnerSeries == nil { if sma.InnerSeries == nil {
return return
} }

9
time_series.go
View file

@ -29,12 +29,19 @@ func (ts TimeSeries) Len() int {
} }
// GetValue gets a value at a given index. // GetValue gets a value at a given index.
func (ts TimeSeries) GetValue(index int) (x float64, y float64) { func (ts TimeSeries) GetValue(index int) (x, y float64) {
x = TimeToFloat64(ts.XValues[index]) x = TimeToFloat64(ts.XValues[index])
y = ts.YValues[index] y = ts.YValues[index]
return return
} }
// GetLastValue gets the last value.
func (ts TimeSeries) GetLastValue() (x, y float64) {
x = TimeToFloat64(ts.XValues[len(ts.XValues)-1])
y = ts.YValues[len(ts.YValues)-1]
return
}
// GetValueFormatters returns value formatter defaults for the series. // GetValueFormatters returns value formatter defaults for the series.
func (ts TimeSeries) GetValueFormatters() (x, y ValueFormatter) { func (ts TimeSeries) GetValueFormatters() (x, y ValueFormatter) {
x = TimeValueFormatter x = TimeValueFormatter

10
value_provider.go
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@ -11,3 +11,13 @@ type BoundedValueProvider interface {
Len() int Len() int
GetBoundedValue(index int) (x, y1, y2 float64) GetBoundedValue(index int) (x, y1, y2 float64)
} }
// LastValueProvider is a special type of value provider that can return it's (potentially computed) last value.
type LastValueProvider interface {
GetLastValue() (x, y float64)
}
// BoundedLastValueProvider is a special type of value provider that can return it's (potentially computed) bounded last value.
type BoundedLastValueProvider interface {
GetBoundedLastValue(index int) (x, y1, y2 float64)
}