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[ferret_users] Setting shade palette then using PPL

  This is my code, and I am wondering how to set the palette so my PPL SHADE
command uses the proper palette:

shade/pal=blue_red_centered.spk/lev=(-inf)(-6)(-5,5,0.5)/nol temdiff
ppl hlabs 1,.18
ppl rlabs 1,0
ppl shade

This is inherited code and I'm not 100% sure -- other than specifying the labels
with ppl, why ppl shade is necessary, but when I execute it, the ppl shade uses the default ferret color palette..
Thanks for any help!

Judy Illeman Gaukel
Climate, Atmospheric Sciences, and Physical Oceanography
Scripps Institution of Oceanography
9500 Gilman Drive, 0230
La Jolla, CA  92093-0230

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