Try unlocking Cliff Reiters at2 function with a plot that uses it.
load 'viewmat'
]GRB=:1 0 2{"1 ( #:i.8){0 255
at2=: 13 :'([:{:"1 *.) j./"1 y'
C=:at2"0 /~ i:2
viewmat C
viewmat C;'C'
GRB viewmat C
GRB viewmat C;'C'
It is a delightful journey.
Linda
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of 'Bo Jacoby'
via Programming
Sent: Saturday, October 04, 2014 1:58 AM
To: [email protected]
Subject: Re: [Jprogramming] Fwd: Plotting magnitudes of complex numbers in J
Note that (plot 5 13) looks different from (plot 5j0 13j0) even if they are
equal: (5 13 -: 5j0 13j0). The error message is however a bug.
plot %:@:(* +)3j4 12j5
|domain error: glcmds
| glcmds buf
Venlig hilsen, Bo.
Den 2:50 lørdag den 4. oktober 2014 skrev Henry Rich <[email protected]>:
>
>
>Yes. Complex numbers plot differently (they are assumed to be x,y pairs)
>
>If you take the real part, using 9&o., it should work. Better to use
norm2.
>
>Henry Rich
>
>On 10/3/2014 7:24 PM, Vijay Lulla wrote:
>> When I tried it I got the following:
>>
>> datatype norm1 3j4 12j5
>>
>> complex
>>
>> datatype norm2 3j4 12j5
>>
>> floating
>>
>>
>> Maybe this could be the issue?
>>
>>
>> On Fri, Oct 3, 2014 at 7:16 PM, bill lam <[email protected]> wrote:
>>
>>> I forwarded this to J forum because I have no real knowledge of plot.
>>> ---------- Forwarded message ----------
>>> From: "Andrey Paramonov" <[email protected]>
>>> Date: Oct 4, 2014 7:07 AM
>>> Subject: Plotting magnitudes of complex numbers in J
>>> To: <[email protected]>
>>> Cc:
>>>
>>> Hi Bill,
>>>
>>> For some reason my message to [email protected] doesn't go
>>> through, so I thought I can shoot you an email with some strange
>>> behaviour (bug?) I see in the plot function. Here is the snippet that
>>> highlights the problem
>>>
>>> norm1=: %:@:(* +)
>>> norm2=: |
>>> norm1 3j4 12j5
>>> 5 13
>>> norm2 3j4 12j5
>>> 5 13
>>> load 'plot'
>>> plot norm2 3j4 12j5 NB. works
>>> plot norm1 3j4 12j5 NB. does NOT work
>>>
>>> I thought you might find it interesting.
>>>
>>> Thank you,
>>> Andrey
>>>
>>> P.S. I'm using j64-802.
>>> ----------------------------------------------------------------------
>>> For information about J forums see http://www.jsoftware.com/forums.htm
>
>>>
>> ----------------------------------------------------------------------
>> For information about J forums see http://www.jsoftware.com/forums.htm
>>
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>
>
>
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