Re: [ferret_users] custom jnl worked in las6.4.2 but not las 6.5.12and ferret5.81

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

Hi Kek,
In your script myland.jnl, I don't see where your script uses the 
argument. The Ferret query command does not take any action except to 
check the argument.  The Ferret commands in your script that open the 
data file and make the land line are:

 ! introduce the outline data set 
 set data/save
 use my-coastline.nc
 PLOT/VS/OVERLAY/NOLAB/LINE lon,lat

To have the line drawn with a thick line, the plot command could use a 
ppl command to set the pen as in land.jnl, or if the argument is always 
going to be either "thick" or nothing, you could use this, to set the 
thickness to 1 if there is no argument or 2 if the argument is the word 
thick.

 PLOT/VS/OVERLAY/NOLAB/LINE/THICK=$1"1|thick>2|*>1" lon,lat

hengkek@nus.edu.sg wrote:

> Greetings
>
> I've a custom .jnl file that draws a very detailed coastline that 
> worked in las6.4.2/ferret5.70 but broke in las6.5.12/ferret5.81.  I'm 
> suspecting it has to do with ferret.  Notes are as follows:
>
> - In "las/server/jnls/std_gif.tmpl", I changed "go land" to "go myland".
>
> - The variable (e.g. depth) is plotted but not the coastline.
>
> - When I changed back to "go land" in std_gif.tmpl, the coarse 
> coastline is drawn.
>
> - When I use "go myland" in a regular (non-LAS) ferret5.81 session, it 
> works somewhat as expected.  In ferret5.70, "go myland thick overlay" 
> gave a thick coastline, but in ferret5.81 it gave the normal "thin" 
> coastline.
>
> - "myland.jnl" is a symlink in "/usr/local/ferret/go/".
>
> - The src for "/usr/local/ferret/go/myland.jnl" (below) is a mod of 
> "land.jnl".
>
> - A las6.4.2/ferret5.81 combo also failed to produce the "myland" 
> coastline.
>
> - "uname -a" gives "Linux host1 2.4.20-8smp #1 SMP Thu Mar 13 17:45:54 
> EST 2003 i686 i686 i386 GNU/Linux"
>
> I'd be grateful for clues/advice as to how to fix this or how to debug 
> it.
>
> Regards
> -Kek
> Physical Oceanography
> Singapore
>
>
> ------------------------------------------------------
> src of myland.jnl:
> ------------------------------------------------------
> \cancel mode verify     ! ... now overlaying coastal outline ...
>
> ! Description: Plot outlines of my coastline
>
> !                       arg 1
> ! usage:   GO land [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
> ! Notes:
> !  2) use  GO line_samples    to view the first 6 pen numbers
> !       Higher pen numbers cycle with thicker lines (max 18)
>
> ! test argument before performing any actions
> query/ignore 
> $1%1|black|red|green|blue|thick|0|1|2|3|4|5|6|7|8|9|10|11|12|13|14|
> 15|16|17|18|N|<GO land [pen or "N"] ["basemap"] [pen] [pen] with pen = 
> 0(back),
> 1(fore), thick, 2-18 or a color%
>
> ! introduce the outline data set
> set data/save
> use my-coastline.nc
> PLOT/VS/OVERLAY/NOLAB/LINE lon,lat
>
> cancel data my-coastline.nc
> set data/restore
> set mode/last verify
> -----------------------------------