Re: [ferret_users] Playing with symbols across scripts

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

Hi Gary,
A couple of ideas:

I can't think of a case where letting Ferret choose levels automatically 
would result in "irregular" delta-levels. I'd be curious to know more 
about how that comes about. 
If you always want the exact same levels, it's very simple. Once a color 
plot has been made, using /LEVELS alone with no argument will use the 
same levels on subsequent plots.

yes? use levitus_climatology
yes? shade temp[k=1]
yes? shade/levels temp[k=12]

Beyond that, I guess you'd have to do what you're saying about 
pre-computing levels to either pass to the scripts as arguments or put 
into symbols.

Gary Strand wrote:
> I've got a whole slew of plots I'm trying to make, using subscripts 
> for the actual plotting commands, and with a separate script that 
> creates the first plot, with the remainder following. Basically:
>
> go plot_original original
> go plot_altered  field1
> go plot_altered  field2
> [...]
> go plot_altered  fieldn
>
> In 'plot_original', I let FERRET pick the contour levels, and then I 
> attempt to retrieve those values via setting some symbols to $LEV_MIN, 
> $LEV_MAX, and $LEV_DEL, for use in the 'plot_altered' scripts. 
> However, when FERRET decides $LEV_DEL is "IRREGULAR", my scripts fall 
> apart.
>
> Is there an easier way to force the same contouring levels to be used 
> across scripts (rather than stuffing them into some giant 
> hard-to-handle script) that doesn't require my pre-computing "good" 
> values and passing them along?
>
> Thanks.
>
> Gary Strand
> strandwg@ucar.edu
> http://www.cgd.ucar.edu/ccr/strandwg
--

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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