HELP

The Ferret web pages, including the Users Guide, Tutorials, FAQ's and the Ferret Users List and archives are your source for help with Ferret. These resources are listed on the Ferret Support page.

For Ferret scripts, the Ferret command GO/HELP echos the start of the script to the terminal, showing the documentation at the start of the script including its arguments and any other notes that the author of the script has included.

yes? GO/HELP land.jnl
 Full path name: /home/tmap/ferret/go/land.jnl
\cancel mode verify ! ... now overlaying coastal outline ...



! Description: Plot outlines of continents, countries, and/or states



! arg 1 arg 2 arg 3 arg 4

! usage: GO land [continent_pen] ["basemap"] [country_pen] [state_pen]



! pens may be "0"(background), "1"(foreground), "thick"(same as pen 7),

! "black", "red", "green", "blue", or 2-18.

! arg 2 may be "basemap", "overlay", "fast" (fast, 20e:20e overlay) or omitted



! Note 1: A pen color of "black" will actually pen number 1

! -- normally white if the window background is black

! Note 2: An "N" for the continent pen means no continents

! -- use this for the special case of geo-political

! overlay without continents.



! examples:

! GO land red - overlay continents using red pen (2)

! GO land 10 - overlay continents using pen number 10

! GO land 1 basemap - basemap of continents outline in foreground color

! GO land 1 fast - overlay continents in region 20e to 380, only

! GO land 1 " " red - overlay continents with countries in red

! GO land thick basemap black black - continents, countries, and states

! GO land N " " 1 1 - overlay: no continents; yes political boundaries



! Notes:

! 1) If a pen value is given for the country_pen or state_pen then the

! corresponding geopolitical boundaries will be drawn - else

! they will be omitted

! 2) use GO line_samples to view the first 6 pen numbers

! Higher pen numbers cycle with thicker lines (max 18)

! 3) For more control over basemaps use "GO basemap"

!