Re: [ferret_users] SIGDIG hysteresis!

[Ryo Furue <furue@xxxxxxxxxx>]

Hi Ansley,

Thanks for investigating.

> Another control for the
> formatting of digits in the labels drawn on contour lines is a
> fourth argument to the /LEVELS qualifier. [. . .]

Thank you for the instruction!  In fact, I should've expanded
on the subject.  What I was actually trying to do was
more like

  contour/lev=(-5)(-2)(-1)(-0.5)(0.5)(1)(2)(5)/sigdig=1 . . .

In this case, the fourth-argument mechanism would have been
a very cumbersome

  lev=(-5,-5,1,1)(-3,-3,1,1)(-0.5,-0.5,1,1) . . .

or something like that.

So, I've actually had another proposal regarding this issue.
As you can see from this example, the SIGDIG mechanism is
more convenient than the fourth-argument mechanism in some
cases.

So, it would be nice if the SIGDIG mechanism be extended
to cover all functionalities of the fourth-argument mechanism.
In particular "SIGDIG=-1" for integer format  would be very useful
and "SIGDIG=0" for omitting the fractional part ("10.", "5.", etc.)
would be nice (or at least good for the sake of consistency).

Cheers,
Ryo