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Re: [ferret_users] contour/levels extension?


I'm used to fooling my eyes by set the font of contour labels ridiculously small in combination with the qualifier LEVELS=x.xD, for example,


The contour labels are still there but too small to be seen, both on screen and in print.


On Wed, Jan 14, 2009 at 11:02 PM, Ryo Furue <furue@xxxxxxxxxx> wrote:
Ferret users and developers,

I find the "LEVELS=x.xD" qualifier handy, but I thought
it would be even nicer if we had some of the additional
capabilities of the "LEVELS=(lo,hi,delta,ndigits)"
qualifier.  For example, I sometimes want to use "LEVELS=x.xD"
but don't want contour labels.

So, I thought it might be useful to extend
the "LEVELS=(lo,hi,delta,ndigits)" qualifier to allow
things like

  LEVELS=( , , 0.1, -3)

which is supposed to be equivalent to "LEVELS=0.1D" but
with contour labels omitted.  Would this be feasible as
an extension?

(As an aside, it doesn't trigger error in the current Ferret
 implementation, but it doesn't have an anticipated result.)

I also think something like

  LEVELS=( , , 0.1C)
  LEVELS=(-3.3, 4, 0.5C)

would be handy to ensure zero contours are included.
(You might want to use the latter in a script where
 the lo and hi of the contour levels are supplied
 as arguments.)


life grows, death doesn't.

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