box_percentile_plot

Creates a box percentile plot. Documentation under construction

Available in version 6.4.0 and later.

Prototype

load "$NCARG_ROOT/lib/ncarg/nclscripts/contrib/box_percentile_plot.ncl"

	procedure box_percentile_plot (
		wks     [1] : graphic,  
		data        : numeric,  
		res         : logical,  
		box_res     : logical,  
		line_res    : logical,  
		marker_res  : logical,  
		per_res     : logical   
	)

Arguments

A Workstation identifier. The identifier is one returned either from calling gsn_open_wks or calling create to create a Workstation object.

Description

This function creates a box-percentile plot after calculating the necessary parameters. A plot object is returned, which you can draw with the draw procedure.

This code was contributed by Frank Kreienkamp, DWD, and is based on Esty WW, Banfield J: The box-percentile plot. J Statistical Software 8 No. 17, 2003. (http://www.jstatsoft.org/v08/i17).

See Also

boxplot

Examples

Below is a complete program you can run to generate a box-percentile plot.

 load "$NCARG_ROOT/lib/ncarg/nclscripts/contrib/box_percentile_plot.ncl"

 begin ; program

 ; create plot
  wtype                          = "png"
  wtype@wkWidth                  =  1000              ; Set the pixel size of image.
  wtype@wkHeight                 =  1000
  wks                            = gsn_open_wks(wtype,"Box_Percentile_Plot")  

  i_res                          = True
  i_res@tmXBLabels               = (/"a","b"/)
  i_res@trYMinF                  = -90
  i_res@trYMaxF                  = 90
  i_res@tiMainString             = "Box-Percentile-Plot example"
  
  i_boxOpts                      = True
  i_boxOpts@boxColors            = "blue" ;(/"blue","blue"/)
  i_boxOpts@boxWidth             = 0.4
  
  i_lineRes                      = True
  i_lineRes@gsLineThicknessF     = 0.9
  i_lineRes@txFontHeightF            = 5  
  i_lineRes@tmXBLabelFontHeightF     = 9
  
  i_markerRes                    = True 
  i_markerRes@gsMarkerIndex      = 1
  i_markerRes@gsMarkerSizeF      = 0.05
  i_markerRes@gsMarkerThicknessF = 1
  i_markerRes@gsMarkerColor      = (/"red","blue"/) ;"blue"
   
  i_PerRes                       = True
  i_PerRes@gsLineColor           = (/"blue","red"/) ;"blue"
  i_PerRes@gsLineThicknessF      = 2  
  i_PerRes@boxColors             = "blue" ; (/"blue","red"/)
  i_PerRes@gsFillColor           = "blue" ; (/"blue","red"/)
  i_PerRes@FillBox               = (/True,False/)
  i_PerRes@MarkPer               = True ;(/True,True/)
  i_PerRes@Avg                   = True ;(/True,True/)
  
 ; Create 2 x 13 float array
  data = (/(/  2.70,  -21.20,    5.60,  -14.20,   21.10,   19.80,  -15.90, \
             -18.40,   -2.50,   63.90,   -2.90,   21.30,  -18.60/), \
           (/  7.30,   -3.30,    3.50,    2.00,    6.30,   11.90,   -0.40, \
              -6.50,    3.80,   34.70,    0.40,   14.20,   -4.00/)/)

  box = box_percentile_plot( wks,data, i_res,i_boxOpts,i_lineRes,i_markerRes,i_PerRes)

 ; Drawing plot
   draw(box)
   frame(wks)
 end ; program