controlling plot mark characteristics

[<SPILLANE@xxxxxxxxxxxxx>]

Hello,
	While I don't know a way to change the size of marks within the
ferret plot command, it is easy to change various mark properties with
separate ppl+ commands

e.g.
	yes? plot/i=1:5/sym=3 i,2*i,3*i
will plot three lines, all with the mark "+" at default size 0.08".
But
	yes? plot/i=1:5/sym=3/set i,2*i,3*i
followed by
	yes? ppl markh,1,0.2 ; ppl markh,2,0.4 ; ppl markh,3,0.6
	yes? ppl line,1,3,3 ; ppl line,2,17,1 ; ppl line,3,47,3
	yes? ppl pen,1,6 ; ppl pen,2,4 ; ppl pen,3,2
	yes? ppl plot
can change the mark height, line style, and line color of each of the
three lines separately.

For more on the Plot Plus commands see the various links under the
Ferret documentation page
   http://ferret.wrc.noaa.gov/Ferret/Documentation/ferret_documentation.html

PPLUS Users Guide:
   http://ferret.wrc.noaa.gov/Ferret/Documentation/PPLUS_Users_Guide/pplus_users_guide.html

Ferret-specific PPLUS enhancements
   http://ferret.wrc.noaa.gov/Ferret/Documentation/PPLUS_Users_Guide/pplus_enhance_user_guide.html

Also of use and interest is the Plot Plus User's Guide (latest version)
	ftp://ftp.pmel.noaa.gov/epic/manual-dir/pplus.pdf
though ferret's ppl+ is a subset of the full Plot Plus described there.

Mick Spillane