, with the contents of three lines changed to

v1= 35.00  ; Low  value for isopleths, disregarded when  nv  is 0 or 1
v2= 35.0875; High value for isopleths, disregarded when  nv  is 0 or 1
nv= 35     ; No. of isopleths, there will be  nv+1  colors

in order to specify the use of contours and colors. Further, an alternative color map was set by editing the contents of two additional lines on the same file, to

;mapname=;"LR BkBlAqGrYeOrReViWh200"; rainbow style, nv <= 17
mapname="HR BkBlAqGrYeOrReViWh200";   rainbow style, nv <= 35

(In ncl, a semicolon [;] is the start of a comment field that extends to the end of the line.)

Note that there is a problem with the labelling of the color bar.


Example 6:
As Example 4, but with different color maps

The figure below was made by issuing the same command as in Example 3, after the file userdef.ncl was copied from