go-chart/time_series.go

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package chart
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import "time"
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// TimeSeries is a line on a chart.
type TimeSeries struct {
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Name string
Style Style
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YAxis yAxisType
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XValues []time.Time
YValues []float64
}
// GetName returns the name of the time series.
func (ts TimeSeries) GetName() string {
return ts.Name
}
// GetStyle returns the line style.
func (ts TimeSeries) GetStyle() Style {
return ts.Style
}
// Len returns the number of elements in the series.
func (ts TimeSeries) Len() int {
return len(ts.XValues)
}
// GetValue gets a value at a given index.
func (ts TimeSeries) GetValue(index int) (x, y float64) {
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x = TimeToFloat64(ts.XValues[index])
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y = ts.YValues[index]
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
}
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// GetValueFormatters returns value formatter defaults for the series.
func (ts TimeSeries) GetValueFormatters() (x, y ValueFormatter) {
x = TimeValueFormatter
y = FloatValueFormatter
return
}
// GetYAxis returns which YAxis the series draws on.
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func (ts TimeSeries) GetYAxis() yAxisType {
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return ts.YAxis
}
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// Render renders the series.
func (ts TimeSeries) Render(r Renderer, canvasBox Box, xrange, yrange Range, defaults Style) {
style := ts.Style.InheritFrom(defaults)
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Draw.LineSeries(r, canvasBox, xrange, yrange, style, ts)
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}