Thank you, Raul. I am very much an amateur, and I am probably exposing
my ignorance. But if plot can figure out how to plot x=0 in plot j.i.5,
why can it not figure out how to plot y=0 as in plot *:j.i.5? The error
message is totally opaque to me. Do you have any idea what it might mean?
plot ]&.j. 0 1 4 9 16
|domain error: glcmds
| glcmds buf
Raul Miller wrote:
On Wed, Aug 13, 2008 at 4:15 PM, Eldon Eller <[EMAIL PROTECTED]> wrote:
Here's a funny thing:
a=.0j0 _1j0 _4j0 _9j0 _16j0
3!:0 a
4
Yes, J's parser reduces numbers to their simplest type.
If you want complex values you can use
]&.j. 0 1 4 9 16
And I remain puzzled by
the behavior of plot. If you give plot a vector of complex numbers, it
appears to plot the imaginary part vs. the real part, and it does not mind
if the real parts = 0; j.i.5 is plotted as x=0. Given that b is complex with
the imaginary parts = 0, why does it not plot y=0 instead of failing?
I think it's trying to figure out how to scale the y axis.
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