hbars4

How to download and try this example

Usage: pl -gif hbars4.htm
Uses data file hbars4.dat.
This one requires a bit of trickery.  Ploticus scale areas cannot go
from high to low, so, for the left portion, we need to convert 
the data to negative, and use bars with a crossover at Y=0.
Then when the axis is drawn, the signreverse option is used to
make the stubs positive values.


#proc getdata
  file: hbars4.dat

   // convert field 1 to negative
   filter:
    ##print -@@1 @@2

// do left portion
#proc areadef
  rectangle: 1 1 2.5 2.5
  xrange: -60 0
  yrange: 0 9
  // must do this to avoid presenting negative values..
  xaxis.stubs: inc 10
  xaxis.signreverse: yes
  xaxis.stubrange: -50 0
  xaxis.grid: color=green

// do bars
#proc bars
  horizontalbars: yes
  crossover: 0
  lenfield: 1
  color: blue
  barwidth: 0.1

// do right portion..
// do the Y axis stubs now..
#proc areadef
  rectangle: 3 1 4.5 2.5
  xrange: 0 60
  yrange: 0 9
  yaxis.axisline: none
  yaxis.stubdetails: adjust=-0.1,0 align=C
  yaxis.tics: none
  yaxis.stubs: list S1\nS2\nS3\nS4\nS5\nS6\nS7\nS8
  xaxis.stubs: incremental 10
  xaxis.stubrange: 0 50
  xaxis.grid: color=green
	
#proc bars
  horizontalbars: yes
  crossover: 0
  lenfield: 2
  color: orange
  barwidth: 0.1