Suggestions for plotting-utility, etc. Was: Notes on the OEIS, Feb 14 2006

[Antti Karttunen]

Ed Pegg Jr wrote:

> You could use Mathematica:
> http://www.maa.org/editorial/mathgames/mathgames_12_08_03.html
>
> Eric has many of these in MathWorld now.  For example,
> http://mathworld.wolfram.com/SquareNumber.html
>
> It's a handy way to visually take in hundreds of large numbers all at 
> once.
>
Would not it be better to run it at the user's end, to avoid (excessive) 
load on AT&T's machines?
In which case one had to use Java or some other language that runs in 
popular browsers.

And also, I think people suggested an ordinary plot, i.e. a graph
(possibly with some auto-logarithmic-scaling, as the magnitudes of OEIS 
sequences
vary wildly!), not that Leibnizque/Wolframic "binary expansion plot". Of 
course both would be nice.
Furthermore, some simple transformations (like BISECT, +1, -1, convert 
to binary or base-k representation, etc.)
that users could do (at their browser end, or at the server end), and then
do further searches with those sequences, would be nice as well.

Terveisin,

Antti Karttunen

This is what Neil wrote:

>1a.  One of the things that we talked about in Belgium
>was that it would be nice to have a button that will produce a plot (or graph) 
>of the sequence, and another to enable you to listen to the sequence
>(maybe as a midi file obtained by reading
>the sequence mod 12 and converting the numbers to tones).

>So I have a question: what would be the best way to produce a gif (or png)
>plot from a sequence?  Gnuplot?  

>And what would be the best way to make a midi file?
>Do any seqfans have experience with doing this sort of thing?


> Ed Pegg Jr
>
>> * N. J. A. Sloane <njas at research.att.com> [Feb 14. 2006 23:23]:
>>  
>>
>>> So I have a question: what would be the best way to produce a gif 
>>> (or png)
>>> plot from a sequence?  Gnuplot?      
>>
>
>