initial commit.

series.go

@@ -0,0 +1,92 @@
+package chart
+
+import "time"
+
+// Series is a entity data set.
+type Series interface {
+	GetName() string
+	GetStyle() Style
+	Len() int
+	GetValue(index int) Point
+
+	GetXRange(domain int) Range
+	GetYRange(domain int) Range
+}
+
+// TimeSeries is a line on a chart.
+type TimeSeries struct {
+	Name  string
+	Style Style
+
+	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)
+}
+
+// GetXRange returns the x range.
+func (ts TimeSeries) GetXRange(domain int) Range {
+	return NewRangeOfTime(domain, ts.XValues...)
+}
+
+// GetYRange returns the x range.
+func (ts TimeSeries) GetYRange(domain int) Range {
+	return NewRangeOfFloat64(domain, ts.YValues...)
+}
+
+// GetValue gets a value at a given index.
+func (ts TimeSeries) GetValue(index int) Point {
+	return Point{X: float64(ts.XValues[index].Unix()), Y: ts.YValues[index]}
+}
+
+// ContinousSeries represents a line on a chart.
+type ContinousSeries struct {
+	Name  string
+	Style Style
+
+	XValues []float64
+	YValues []float64
+}
+
+// GetName returns the name of the time series.
+func (cs ContinousSeries) GetName() string {
+	return cs.Name
+}
+
+// GetStyle returns the line style.
+func (cs ContinousSeries) GetStyle() Style {
+	return cs.Style
+}
+
+// Len returns the number of elements in the series.
+func (cs ContinousSeries) Len() int {
+	return len(cs.XValues)
+}
+
+// GetValue gets a value at a given index.
+func (cs ContinousSeries) GetValue(index int) Point {
+	return Point{X: cs.XValues[index], Y: cs.YValues[index]}
+}
+
+// GetXRange returns the x range.
+func (cs ContinousSeries) GetXRange(domain int) Range {
+	return NewRangeOfFloat64(domain, cs.XValues...)
+}
+
+// GetYRange returns the x range.
+func (cs ContinousSeries) GetYRange(domain int) Range {
+	return NewRangeOfFloat64(domain, cs.YValues...)
+}