Re: How to plot the topography in Y-Z plate?

[D Shankar <shankar@xxxxxxxxxxxxx>]

Hi,
The following journal file is what we use to overlay a land-sea mask for
Levitus data.  It works for vertical sections too.
Shankar.
------------------------------------------------------------------------
! NOTE: for a contour plot in the XY plane BELOW the surface, you must supply
! the first argument to this GO script.
! usage: GO fland_levitus k=N  (where N is the required level)
! or     GO fland_levitus z=Z  (where Z is the required depth)
!        GO fland_levitus      (in other cases)
\cancel mode verify
! fland_levitus.jnl - a land mask for the LEVITUS dataset (overlay or "basemap")
! 1/97

! Description: Plot/overlay an an area-filled continental map using LEVITUS mask

! usage:               arg1      arg2        arg3         arg4      arg5
!  GO fland_levitus [z=lo:hi] [palette] [overlay_style] [x=lo:hi] [y=lo:hi]

! arg1  - depth limits - specify as for any FERRET depth range
!                        use either k=*:* or z=*:*
! arg2  - palette - may be any palette on your system.  Normally solid colors
!	           like black, gray,red, etc. (see Fpalette '*') default=gray
! arg3  - overlay_style - "basemap", "transparent", or "overlay" (default)
! arg4  - longitude limits - specify as for any FERRET longitude range
! arg5  - latitude  limits - specify as for any FERRET latitude  range
 
! examples:
!	  GO fland_levitus 	          ! default - color gray, overlay
!       GO fland_levitus k=1            ! MASK for surface
!	  GO fland_levitus k=1 red        ! palette red.spk, overlay
!	  GO fland_levitus z=0:1000 red basemap ! color red, basemap
!	  GO fland_levitus z=1000 gray transparent ! color gray, transparent mask
!       GO fland k=1 gray overlay x=30e:100w y=20s:20n

! Note : The transparent option creates a see-through overlay land mask

! check the overlay/basemap/transparent option
query/ignore $3%overlay|overlay|basemap|transparent<3rd argument of GO fland_levitus must be "overlay", "basemap", or "transparent"%

! save data set
set data/save

! save region
define region/default levitus

! set data for MASK
use levitus_mask.nc

set region/l=1

shade/nolab/nokey/levels="(-0.5,0.5,1.0)"$1" |*>/*"/pal=$2"gray"$3"/overlay|basemap> |*>/overlay"$4" |*>/*"$5" |*>/*" $3"MASK|transparent>if mod(i+j,2) eq 0 then MASK|*>MASK"

! cancel MASK data set
cancel data levitus_mask.nc

! restore region
set region levitus

! restore original data set
set data/restore

set mode/last verify

! END of fland_levitus.jnl
----------------------------------------------------------------------------

On Wed, 1 Mar 2000, Yang Kun wrote:

> Hi, Dear ferret_users,
> 
> I am a new ferret_beginner.
> I contoured the temperature in Y-Z plate and want to
> fill the land in depth, how can I do it? I use a
> variable in my netcdf file as a mask which use missing
> value(-999.0) as land and 1 as sea water.
> Thank you for the help.
> 
> yours,
> Kun
> 
> =====================================================
> Kun Yang,   Researching Assistant
> Dept. of Oceanography, Texas A&M Uni. College Station
> Mailing Addr:     806F, Oran Circle, Bryan, TX, 77801
> Tel:  (409)-268-0963 (h), (409)-845-3238 (o)
> Email addr:    yangk@ocean.tamu.edu; yangk@netease.com
> =====================================================
> 

D. Shankar                           Ph. (O): [91](832) 22 6253 * 4400/4224
Physical Oceanography Division,                         22 1322 * 4400/4224
National Institute of Oceanography,      (R): [91](832) 23 8208      
Dona Paula,                          Fax    : [91](832) 22 3340/1360/9102
Goa 403 004,                         email  : shankar@csnio.ren.nic.in
India.                                        shankar@darya.nio.org