Re: [ferret_users] invert color key

[Jaison Kurian <jaison@xxxxxxxxxxxxxxxxxx>]

Hi Jonathan,
              Easy to do...just reverse the "ylo" and "yhi" in the
PPL SHAKEY command to "yhi" and "ylo" as follows:

the normal shakey command syntax is

 SHAKEY do_key, orient, klab_siz, klab_inc, klab_dig, klab_len, kx_lo, kx_hi, 
ky_lo, ky_hi

change it to

 SHAKEY do_key, orient, klab_siz, klab_inc, klab_dig, klab_len, kx_lo, kx_hi, 
ky_hi, ky_lo

to reverse the color key.

Important point : ppl shakey shouild be used with /SET qualifier to the
                  action command FILL or SHADE and it should follow by
                  "PPL SHADE" or "PPL FILL"

                 I haven't tried this with other projections..but you can
                 work it out.

 See the example below (please note that the last two arguments are changed
here and all other arguments to shakey is the defaults ones)

   yes? set data levitus_climatology
   yes? fill/k=1/lev=(-5,30,2)/set temp
   yes? ppl shakey ,,,,,,,,7.4,1.4
   yes?  ppl fill


Hope this helps

Regards

Jaison


On Wed, 8 Feb 2006, Jonathan Winter wrote:

> I'm trying to make some proper energy plots with consistent sign
> conventions.  Basically, I'd like a color bar with -170 at the top, -20
> at the bottom, intervals of 10.
>
> I've reversed the default palette to get -170 red and -20 purple, which
> works, but I can't find a way to get the color bar and labels to
> reverse.  I've tried every possible combination of levels, this is the
> one that I thought would work:
>
> fill/level=(-20,-170,-10)/palette=inverse_rnb/nolabel
> var_obs[i=6:83,j=6:53]/21600, x_page, y_page
>
> but unfortunately doesn't.  thanks in advance for the help.
>
> jonathan