Raul,

It took me a while to understand your post.
At http://code.jsoftware.com/wiki/Plot/Types I found 'density' which
complies with your 'dense'.
At http://code.jsoftware.com/wiki/Studio/Plot#3D_Function_Plot I discovered
a terrific 'surface' plot that could be readily changed to a 'density' plot
by just changing the one word 'surface' to 'density'. Furthermore by
changing the definition of the verb 'gamma' as I show below, I could very
simply see either a surface or a density plot of the real part of _2&^.


      gamma=: _2&^         NB. bad naming, but easier to adjust with the
rest of the example
      real=: {.@+.
      imag=: {:@+.         NB. added
      x=: steps 0 1 40     NB. altered from the wiki
      y=: steps _1 1 40
      z=: real gamma x j./ y
      z=: imag gamma x j./ y
      dat=: _3 >. 12 <. z
      'surface;noaxes;viewpoint _1 _2.5 1' plot dat
      z=: real gamma x j./ y
      dat=: _3 >. 12 <. z
      'surface;noaxes;viewpoint _1 _2.5 1' plot dat

Thanks very much. I still don't "get it" regarding the import/contribution
of _2&^ to Ewart's DF and RF, though.



On Mon, May 7, 2018 at 7:07 PM, Raul Miller <[email protected]> wrote:

> You'd probably have better luck with [dense] 3d plots.
>
> You've really got four dimensions (2 in, 2 out), but with 3 you only
> have to drop one dimension rather than half of them.
>
> I hope this helps,
>
> --
> Raul
>
>
>
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