add custom value formatters for continuous series.
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2 changed files with 31 additions and 2 deletions
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@ -7,6 +7,9 @@ type ContinuousSeries struct {
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YAxis YAxisType
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XValueFormatter ValueFormatter
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YValueFormatter ValueFormatter
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XValues []float64
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YValues []float64
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}
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@ -38,8 +41,16 @@ func (cs ContinuousSeries) GetLastValue() (float64, float64) {
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// GetValueFormatters returns value formatter defaults for the series.
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func (cs ContinuousSeries) GetValueFormatters() (x, y ValueFormatter) {
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x = FloatValueFormatter
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y = FloatValueFormatter
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if cs.XValueFormatter != nil {
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x = cs.XValueFormatter
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} else {
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x = FloatValueFormatter
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}
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if cs.YValueFormatter != nil {
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y = cs.YValueFormatter
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} else {
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y = FloatValueFormatter
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}
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return
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}
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@ -1,6 +1,7 @@
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package chart
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import (
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"fmt"
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"testing"
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assert "github.com/blendlabs/go-assert"
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@ -29,3 +30,20 @@ func TestContinuousSeries(t *testing.T) {
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assert.Equal(10.0, xn)
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assert.Equal(10.0, yn)
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}
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func TestContinuousSeriesValueFormatter(t *testing.T) {
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assert := assert.New(t)
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cs := ContinuousSeries{
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XValueFormatter: func(v interface{}) string {
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return fmt.Sprintf("%f foo", v)
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},
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YValueFormatter: func(v interface{}) string {
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return fmt.Sprintf("%f bar", v)
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},
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}
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xf, yf := cs.GetValueFormatters()
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assert.Equal("0.100000 foo", xf(0.1))
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assert.Equal("0.100000 bar", yf(0.1))
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}
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