[Thread Prev][Thread Next][Index]

Re: Draw coastal line in different sea depth levels.



Hi Takaya,

Have a look inside of the script fland.jnl
    yes? GO/help fland

In there you will see commands that reduce (after argument substitutions) to

     set data etopo5
     shade/nolab/nokey/lev=(0,10000,10000)/pal=gray/overlay
     rose[x=lo:hi,y=lo:hi]

The qualifiers /LEVELS=(0,10000,10000)/PALETTE=gray tell Ferret to fill in
gray everywhere that the elevation exceeds zero (i.e. land).

For your application you need only replace the "0" with the desired depth.
For example,

     set data etopo60
     shade/lev="(-500)(10000)"/pal=gray rose
     go land

will create a mask of all areas shallower than 500 meters ("go land" overlays
the coasts as lines to illustrate).

    - steve

=============================

Namba Takaya wrote:

> Dear Sir.
>
> I would like to contour or shade some parameters (salinity, temperature
> etc) in the defferent sea depth levels drawing the coastal line which
> change with depth? I would like to use etopo5
> to draw each depth coastal line respectively.
>
> Could you tell me how to do it?
>
> Thank you in advance.
>
> Japan International Cooperation Agency
> Takaya Namba
>
> _________________________________________________________________________
> Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.

--
Steve Hankin
NOAA/PMEL, 7600 Sand Point Way NE, Seattle, WA 98115-0070
ph. (206) 526-6080 -- FAX (206) 526-6744




[Thread Prev][Thread Next][Index]

Dept of Commerce / NOAA / OAR / PMEL / TMAP

Contact Us | Privacy Policy | Disclaimer | Accessibility Statement