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pressure_graph.go
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pressure_graph.go
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package main
import (
"math"
ui "github.com/gizak/termui/v3"
"github.com/gizak/termui/v3/widgets"
"github.com/jamespwilliams/psitop/pressure"
)
func newPressureGraph(somePressures, fullPressures []pressure.Pressure, graphMetric graphMetric) *widgets.Plot {
somePressures = somePressures[max(len(somePressures)-70, 0):]
fullPressures = fullPressures[max(len(fullPressures)-70, 0):]
var someData, fullData []float64
for _, p := range somePressures {
switch graphMetric {
case avg10:
someData = append(someData, p.Avg10)
case avg60:
someData = append(someData, p.Avg60)
default:
someData = append(someData, p.Avg300)
}
}
for _, p := range fullPressures {
switch graphMetric {
case avg10:
fullData = append(fullData, p.Avg10)
case avg60:
fullData = append(fullData, p.Avg60)
default:
fullData = append(fullData, p.Avg300)
}
}
p := widgets.NewPlot()
p.Title = "Pressure"
p.Data = [][]float64{}
p.LineColors = []ui.Color{}
if len(someData) > 0 {
p.Data = append(p.Data, someData)
p.LineColors = append(p.LineColors, ui.ColorGreen)
}
if len(fullData) > 0 {
p.Data = append(p.Data, fullData)
p.LineColors = append(p.LineColors, ui.ColorYellow)
}
p.MaxVal = calculatePressureGraphMaxVal(p.Data)
return p
}
func calculatePressureGraphMaxVal(data [][]float64) float64 {
var max float64
for _, line := range data {
for _, point := range line {
if point > max {
max = point
}
}
}
maxVal := math.Pow(2, math.Ceil(math.Log2(max)))
if maxVal < 1.0 {
return 1.0
}
return maxVal
}