go-chart/value.go
2018-12-06 16:38:58 +01:00

56 lines
1.0 KiB
Go

package chart
import util "git.gutmet.org/go-chart.git/util"
// Value is a chart value.
type Value struct {
Style Style
Label string
Value float64
}
// Values is an array of Value.
type Values []Value
// Values returns the values.
func (vs Values) Values() []float64 {
values := make([]float64, len(vs))
for index, v := range vs {
values[index] = v.Value
}
return values
}
// ValuesNormalized returns normalized values.
func (vs Values) ValuesNormalized() []float64 {
return util.Math.Normalize(vs.Values()...)
}
// Normalize returns the values normalized.
func (vs Values) Normalize() []Value {
var output []Value
var total float64
for _, v := range vs {
total += v.Value
}
for _, v := range vs {
if v.Value > 0 {
output = append(output, Value{
Style: v.Style,
Label: v.Label,
Value: util.Math.RoundDown(v.Value/total, 0.0001),
})
}
}
return output
}
// Value2 is a two axis value.
type Value2 struct {
Style Style
Label string
XValue, YValue float64
}