termui/_examples/linechart.go

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// Copyright 2017 Zack Guo <zack.y.guo@gmail.com>. All rights reserved.
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// Use of this source code is governed by a MIT license that can
// be found in the LICENSE file.
// +build ignore
package main
import (
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"log"
"math"
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ui "github.com/gizak/termui"
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"github.com/gizak/termui/widgets"
)
func main() {
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if err := ui.Init(); err != nil {
log.Fatalf("failed to initialize termui: %v", err)
}
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defer ui.Close()
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sinData := func() [][]float64 {
n := 220
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data := make([][]float64, 2)
data[0] = make([]float64, n)
data[1] = make([]float64, n)
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for i := 0; i < n; i++ {
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data[0][i] = 1 + math.Sin(float64(i)/5)
data[1][i] = 1 + math.Cos(float64(i)/5)
}
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return data
}()
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lc0 := widgets.NewLineChart()
lc0.Title = "braille-mode Line Chart"
lc0.Data = sinData
lc0.SetRect(0, 0, 50, 15)
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lc0.AxesColor = ui.ColorWhite
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lc0.LineColors[0] = ui.ColorGreen
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lc1 := widgets.NewLineChart()
lc1.Title = "custom Line Chart"
lc1.LineType = widgets.DotLine
lc1.Data = [][]float64{[]float64{1, 2, 3, 4, 5}}
lc1.SetRect(50, 0, 75, 10)
lc1.DotChar = '+'
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lc1.AxesColor = ui.ColorWhite
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lc1.LineColors[0] = ui.ColorYellow
lc1.DrawDirection = widgets.DrawLeft
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lc2 := widgets.NewLineChart()
lc2.Title = "dot-mode Line Chart"
lc2.LineType = widgets.DotLine
lc2.Data = make([][]float64, 2)
lc2.Data[0] = sinData[0][4:]
lc2.Data[1] = sinData[1][4:]
lc2.SetRect(0, 15, 50, 30)
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lc2.AxesColor = ui.ColorWhite
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lc2.LineColors[0] = ui.ColorCyan
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ui.Render(lc0, lc1, lc2)
uiEvents := ui.PollEvents()
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for {
e := <-uiEvents
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switch e.ID {
case "q", "<C-c>":
return
}
}
}