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controlling plot mark characteristics
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
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