Re: gridding: differences of 4.2 and 4.4

[Ethan M. <merritt@u.washington.edu>]

On Friday 04 December 2009 13:25:18 Ethan Merritt wrote:
> On Friday 04 December 2009 08:19:43 Petr Mikulik wrote:

>  
> > There is yet another error in 4.4 -- the following command fails:
> > m=5; n=8; set dgrid3d m,m,n
> 
> I confirm this one.
> It looks like the "new" set_dgrid3d() routine is falsely assuming
> it can detect numerical values by calling isanumber().
> 
> <aside>
>  We should rename that routine!
>  It doesn't at all do what its name suggests.
> </aside>
> 
> I'll have a quick go at fixing this.

Hmm. This is more complicated than I thought.

Could someone please clarify:

- The BNF description of syntax under "help set dgrid3d" shows
  only the "hann" option taking 2 additional parameters.
  But the text says that 5 options use these parameters.
  Which is correct?

- Is there a difference between
	set dgrid3d <rows>, <cols>, <norm>        # old syntax
  and
	set dgrid3d <rows>, <cols>, <norm> qnorm  # is this legal?
  and
	set dgrid3d <rows>, <cols> qnorm <norm>   # new syntax

- Note that the current BNF description of syntax would not allow
  either of the first two commands above

	Ethan