thist - a go package for calculating online histograms with plotting to the terminal and images
Check out the watch subcommands from the csvtk and seqkit tools to see the code in action.
Example
package main
import (
"fmt"
"github.com/bsipos/thist"
"math/rand"
"time"
)
// randStream return a channel filled with endless normal random values
func randStream() chan float64 {
c := make(chan float64)
go func() {
for {
c <- rand.NormFloat64()
}
}()
return c
}
func main() {
// create new histogram
h := thist.NewHist(nil, "Example histogram", "auto", -1, true)
c := randStream()
i := 0
for {
// add data point to hsitogram
h.Update(<-c)
if i%50 == 0 {
// draw histogram
fmt.Println(h.Draw())
time.Sleep(time.Second)
}
i++
}
}
TODO
- Add more details on online histogram generation.
- Add separate object for online estimation of moments.
- Maybe add tcell as a back-end?