Yes, that's better.
Henry Rich
On 9/14/2013 6:38 PM, km wrote:
Very cool, Henry! You can also use
ellipse2 =: [: j./ ((cos ,: sin) 0 to 2p1) * ,
An advantage of complex number plots is they are easy to rotate and translate.
Try
plot (^&j. _1r4p1) * 2 ellipse 1 NB. rotates -45 degrees
--Kip Murray
Sent from my iPad
On Sep 14, 2013, at 12:04 PM, Henry Rich <[email protected]> wrote:
Verb rather than conjunction:
ellipse =: [: +.^:_1 ((cos ,. sin) 0 to 2p1) *"1 ,
If you just want to plot, you can leave the real/imaginary separate:
ellipse2 =: ((cos ; sin) 0 to 2p1) *&.> ,
Henry Rich
On 9/13/2013 6:22 PM, km wrote:
You can plot a complex list.
Try
L =: _1j1 0 1j1
and
plot L
plot 0j1 + L
plot 0j1 * L
(It is easy to translate and rotate a plot defined by a complex list.)
Challenge: devise a conjunction ellipse that produces a complex list for
plotting the ellipse
1 = (*: x % a) + (*: y % b) NB. In algebra x^2/a^2 + y^2/b^2 = 1
The command
plot a ellipse b
should produce a plot of the above ellipse.
Easier: devise an adverb parabola that produces complex numbers for plotting
the parabola
(*: x) = 4 * p * y
You want the command
plot p parabola c to d
to plot the above parabola for x in the interval from c to d.
Here is verb "to"
to =: [ + -~ * 1r512 * [: i. 513"_
NB. c to d produces 513 equally spaced values from (real) c to d
Above tested on my iPad
IFIPAD
1
VERSION
1.3 5
--Kip Murray
Sent from my iPad
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