PyXPlot

Examples - Conversion Scales

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Conversion scales between Imperial and metric units

Script

# Generalised routine for making conversion scales
subroutine ConversionScale(origin_x,origin_y,ConversionFactor,UnitA,UnitB)
 {
  set size ratio 1e-2
  exec "set axis x2 linked x using x*%s"%(ConversionFactor)
  set axis y invisible
  set xlabel UnitA
  set x2label UnitB
  set origin origin_x,origin_y
  plot
 }

set nodisplay
set multiplot

# Make a temperature conversion scale
set xtics outward -10,10
set x2tics outward 20,20
set xrange[-10:100]
call ConversionScale(0,0,"unit(oC)/unit(oF)","$^\circ$C","$^\circ$F")

# Make a mass conversion scale
set xtics outward 0,1
set x2tics outward 2,2
set xrange[0:10]
call ConversionScale(0,3.2,"unit(kg)/unit(lb)","kg","lb")

# Make a length conversion scale
set xtics outward 0,2
set x2tics outward 1,1
set xrange[0:20]
call ConversionScale(0,6.4,"unit(cm)/unit(in)","cm","in")

set display
refresh
      

Notes

In this example, we use PyXPlot's automatic conversion of physical units to create conversion scales between various Imperial and metric units.