Re: [ferret_users] [Ferret] usage of basemap

[Ansley Manke <ansley.b.manke@xxxxxxxx>]

Hi Zhen,
The script fland.jnl is the one to use to ovarlay land masses on a plot 
of your variable. So, after plotting your own variable (with qualifiers 
/X= and /Y= or /HLIM and /VLIM to specify the region), call fland.jnl. 
The first argument is the resolution of the land dataset to use; the 
second variable is the name of a color palette to use to change the land 
masses from grey to some other single color or to show the topography, 
with a palette such as dark_land_sea

  
fill/nolab/hlim=120:295/vlim=45S:50/key/line/sigdig=1/levels=(-1.0,1.0,0.1) 
CC
  go fland 20 black

The basemap script is good to use when you want your data to overlay the 
map.  Again the next argument is a color palette, such as black.

 go basemap x=120:295 y=45s:50 20 black
 fill/nolab/over/key/line/sigdig=1/levels=(-1.0,1.0,0.1) CC

For all these scripts, to see the documentation from the script, type

  yes? go/help fland.jnl
  yes? go/help basemap.jnl

and you'll see information about the arguments and how to call the script.

Ansley

zhen.li@gsfc.nasa.gov wrote:
> Dear Ferret users:
>
> I have a few questions on using the basemap:
>
> 1) If I do the following:
>  "go basemap x=120:295 y=45s:50 20"
>  "fill/nolab/over/key/line/sigdig=1/levels=(-1.0,1.0,0.1) CC",
>
>   Then, the field of my variable covers part of the lands.
>
> 2) If do "fill/nolab/over/key/line/sigdig=1/levels=(-1.0,1.0,0.1) CC", 
> and then the
> "go basemap x=120:295 y=45s:50 20"
>
> The basemap overrides my field variable.
>
> Does anyone know how to get this right?
>
> 3) I'd like to color the continent "black", how can I do this?
>
> Thank you!
>
> Zhen
--

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Ansley Manke, NOAA/PMEL   ansley.b.manke@noaa.gov
7600 Sand Point Way NE, Seattle WA
Phone 206-526-6246,  FAX 206-526-6744