asciigraph
Go package to make lightweight ASCII line graphs ╭┈╯.
Installation
go get github.com/guptarohit/asciigraph
Usage
Basic graph
package main
import (
"fmt"
"github.com/guptarohit/asciigraph"
)
func main() {
data := []float64{3, 4, 9, 6, 2, 4, 5, 8, 5, 10, 2, 7, 2, 5, 6}
graph := asciigraph.Plot(data)
fmt.Println(graph)
}
Running this example would render the following graph:
10.00 ┤ ╭╮
9.00 ┤ ╭╮ ││
8.00 ┤ ││ ╭╮││
7.00 ┤ ││ ││││╭╮
6.00 ┤ │╰╮ ││││││ ╭
5.00 ┤ │ │ ╭╯╰╯│││╭╯
4.00 ┤╭╯ │╭╯ ││││
3.00 ┼╯ ││ ││││
2.00 ┤ ╰╯ ╰╯╰╯
Command line interface
This package also brings a small utility for command line usage. Assuming $GOPATH/bin is in your $PATH, simply go get it then install CLI.
CLI Installation
go install github.com/guptarohit/asciigraph/cmd/asciigraph
or download binaries from the releases page.
Feed it data points via stdin:
$ seq 1 72 | asciigraph -h 10 -c "plot data from stdin"
72.00 ┼
65.55 ┤ ╭────
59.09 ┤ ╭──────╯
52.64 ┤ ╭──────╯
46.18 ┤ ╭──────╯
39.73 ┤ ╭──────╯
33.27 ┤ ╭───────╯
26.82 ┤ ╭──────╯
20.36 ┤ ╭──────╯
13.91 ┤ ╭──────╯
7.45 ┤ ╭──────╯
1.00 ┼──╯
plot data from stdin
Realtime graph for data points via stdin:
$ ping -i.2 google.com | grep -oP '(?<=time=).*(?=ms)' --line-buffered | asciigraph -r -h 10 -w 40 -c "realtime plot data (google ping in ms) from stdin"
Acknowledgement
This package started as golang port of asciichart.
Contributing
Feel free to make a pull request! 
