LogScale.nim

import std/[math]
import imgui
import implot

#--------------------
# demo_Axes_LogScale()
#--------------------
proc demo_Axes_LogScale*() =
  var
    xs {.global.} : array[1001,cdouble]
    ys1{.global.} : array[1001,cdouble]
    ys2{.global.} : array[1001,cdouble]
    ys3{.global.} : array[1001,cdouble]

  once:
    for i in 0..<1001:
      xs[i]  = i.float32 * 0.1f
      ys1[i] = sin(xs[i]) + 1
      ys2[i] = log(xs[i],10)
      ys3[i] = pow(10.0, xs[i])

  if ipBeginPlot("Log Plot", ImVec2(x: -1,y: 0)):
    defer: ipEndPlot()
    ipSetupAxisScale(ImAxis.X1, ImPlotScale.Log10)
    ipSetupAxesLimits(0.1, 100, 0, 10)
    ipPlotLine("f(x) = x",        xs.ptz, xs.ptz,  1001)
    ipPlotLine("f(x) = sin(x)+1", xs.ptz, ys1.ptz, 1001)
    ipPlotLine("f(x) = log(x)",   xs.ptz, ys2.ptz, 1001)
    ipPlotLine("f(x) = 10^x",     xs.ptz, ys3.ptz, 21)