Re: [Jprogramming] Complex functions ...

2017-04-15 Thread chris burke
Check the archives to see if a message has been posted to the forum. Allow 5 minutes for the archives to be updated. For example, visit www.jsoftware.com/forumsearch, enter "alvord" in the "where the author contains" edit box, then press Search to see recent posts from Linda. Note that some mail

Re: [Jprogramming] Complex functions ...

2017-04-14 Thread Linda A Alvord
Behalf Of Xiao-Yong Jin Sent: Friday, April 14, 2017 9:00 PM To: programm...@jsoftware.com Subject: Re: [Jprogramming] Complex functions ... > On Apr 14, 2017, at 7:49 PM, Linda A Alvord wrote: > > First is there a limit in size to emails send to the forum? Your messages have gone throug

Re: [Jprogramming] Complex functions ...

2017-04-14 Thread Xiao-Yong Jin
> On Apr 14, 2017, at 7:49 PM, Linda A Alvord wrote: > > First is there a limit in size to emails send to the forum? Your messages have gone through alright. This may be the fifth time? Check: http://jsoftware.com/pipermail/programming/2017-April/date.html

[Jprogramming] Complex functions ...

2017-04-14 Thread Linda A Alvord
First is there a limit in size to emails send to the forum? Here's a shortened message that I hope will get delivered. If this image is a clock face, in an hour the grayscale image goes from white to black correctly. If you use the RGB palette that is not the case. load 'plot' at2=: 1

Re: [Jprogramming] Complex functions visualization

2017-04-14 Thread Jo van Schalkwyk
erns. > > Linda > > -----Original Message----- > From: Programming [mailto:programming-boun...@forums.jsoftware.com] On > Behalf Of Jo van Schalkwyk > Sent: Friday, April 14, 2017 6:18 AM > To: programm...@jsoftware.com > Subject: Re: [Jprogramming] Complex functio

[Jprogramming] Complex functions continued...

2017-04-14 Thread Linda A Alvord
Andrew, These are fascinating images. Several years ago I tried to convince people that GRB would be a better palette than RGB. I used Cliff's image, your first pattern, and rotated it 90 degrees. If you think of this as the face of a clock, then in an hour the GRB palette goes from white to b

Re: [Jprogramming] Complex functions visualization

2017-04-14 Thread Linda A Alvord
interesting discoveries with your other patterns. Linda -Original Message- From: Programming [mailto:programming-boun...@forums.jsoftware.com] On Behalf Of Jo van Schalkwyk Sent: Friday, April 14, 2017 6:18 AM To: programm...@jsoftware.com Subject: Re: [Jprogramming] Complex functions visualization H

Re: [Jprogramming] Complex functions visualization

2017-04-14 Thread Raul Miller
0 /~ i:500) >> (gray RGB) viewmat (D=.at2"0 /~ i:500) >> (gray GRB) viewmat (D=.at2"0 /~ i:500) >> >> (Another little exercise for JHS) >> >> Maybe you'll make some interesting discoveries with your other patterns. >> >> Linda >>

Re: [Jprogramming] Complex functions visualization

2017-04-14 Thread Jo van Schalkwyk
r other patterns. > > Linda > > -Original Message- > From: Programming [mailto:programming-boun...@forums.jsoftware.com] On > Behalf Of Andrew Nikitin > Sent: Tuesday, April 11, 2017 11:39 AM > To: J programming > Subject: [Jprogramming] Complex functions visua

Re: [Jprogramming] Complex functions visualization

2017-04-13 Thread Linda A Alvord
interesting discoveries with your other patterns. Linda -Original Message- From: Programming [mailto:programming-boun...@forums.jsoftware.com] On Behalf Of Andrew Nikitin Sent: Tuesday, April 11, 2017 11:39 AM To: J programming Subject: [Jprogramming] Complex functions visualization I read a book &quo

Re: [Jprogramming] Complex functions visualization

2017-04-13 Thread Linda A Alvord
at2"0 /~ i:500) (Another good JHS exercise) Linda -Original Message- From: Programming [mailto:programming-boun...@forums.jsoftware.com] On Behalf Of Andrew Nikitin Sent: Tuesday, April 11, 2017 11:39 AM To: J programming Subject: [Jprogramming] Complex functions visualization I read a

Re: [Jprogramming] Complex functions visualization

2017-04-13 Thread Rob Hodgkinson
Andrew, beautiful job putting this up on the JSoftware page, interesting and very nicely done !! > On 13 Apr 2017, at 10:20 pm, Andrew Nikitin wrote: > > I have updated phase portraits page > http://code.jsoftware.com/wiki/User:Andrew_Nikitin/Phase_portraits > > Now it includes several alter

Re: [Jprogramming] Complex functions visualization

2017-04-13 Thread David Porter
Thanks for the grey palettes. Being colorblind, I miss some of the information in the color plots, even though I think they are prettier. Dave On 4/13/2017 8:20 AM, Andrew Nikitin wrote: I have updated phase portraits page http://code.jsoftware.com/wiki/User:Andrew_Nikitin/Phase_portraits

[Jprogramming] Complex functions visualization

2017-04-13 Thread Andrew Nikitin
I have updated phase portraits page http://code.jsoftware.com/wiki/User:Andrew_Nikitin/Phase_portraits Now it includes several alternative palettes and a sampler that demonstrates their appearance. -- For information about J for

Re: [Jprogramming] Complex functions visualization

2017-04-11 Thread 'Bo Jacoby' via Programming
Consider drawing the complex plane such that 1 is upwards and i is to the right. Then complex conjugation correspond to left-right symmetry, which is more familiar than up-down symmetry.  Bo. Den 17:57 tirsdag den 11. april 2017 skrev Roger Hui : V. cool. On Tue, Apr 11, 2017 at 8:3

Re: [Jprogramming] Complex functions visualization

2017-04-11 Thread Roger Hui
V. cool. On Tue, Apr 11, 2017 at 8:39 AM, Andrew Nikitin wrote: > I read a book "Visual Complex Functions" by Elias Wegert. > > In it autor argues for so called phase portraits as a good way to visualize > complex function of one complex variable. Each function value is > represented by > a pix

[Jprogramming] Complex functions visualization

2017-04-11 Thread Andrew Nikitin
I read a book "Visual Complex Functions" by Elias Wegert. In it autor argues for so called phase portraits as a good way to visualize complex function of one complex variable. Each function value is represented by a pixel with a hue (which is an angular quantity) equal to function value's phase an