Robert Gloeckner | 1 Mar 02:23 2008
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other than clisp precompiled packages?

Hello,

I used older versions of gcl-precompiled maxima-binaries and now i
"upgraded" to 5.14.0, but i am very unhappy with the usability of this
clisp-binaries under linux/emacs. the functions i use most of the time
maxima-send-region and maxima-send-full-line-and-goto-next-form are not
usable anymore, because output is delayed till last output - so
intermediate (log-) outputs do not show up until all computation is done.

Maybe someone else already knows of links to
other-than-clisp-maxima-binaries for windows/linux?

Thanks,
Robert
Adam Majewski | 1 Mar 10:31 2008
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Re: discrete dynamical system

Mario Rodriguez pisze:
>> Here is implemented:
>> - stack ( LIFO) using list
>> - drawing points points using 2 lists
>> This maybe things to improve
>>   
> Hello,
> 
>  From draw's point of view, your code is 100% correct. But take into 
> account that the drawing routine takes only a small portion of computing 
> time, since most of the time is dedicated to the computation of the 
> Julia set.

I have problem with point size. I use diffrent positive integer values 
but points are still small.
> 
> On the other hand, now that I see this algorithm, perhaps the 'points' 
> drawing object could be improved to admit arrays of coordinates instead 
> of only lists and matrices.
Can you expand it ?
Do you think about drawing only array Hits in 3D.
h(x,y):=Hits[fix(X),fix(Y)]/HitLimit;
It would be an diagram like fig 27 in "the beauty of fractals" by Peitgen.
Can you do it ?

> 
> Another drawing alternative could be the 'image' object, as in the 
> Mandelbrot sets in
> 
> www.telefonica.net/web2/biomates/maxima/gpdraw/image
(Continue reading)

Mario Rodriguez | 1 Mar 14:15 2008
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Re: discrete dynamical system


> I have problem with point size. I use diffrent positive integer values 
> but points are still small.
>   

If you want to play with point sizes, don't use 'point_type=dot', but 
'point_type=filled_circle' or similar formats (type ? point_type for 
other alternatives)

>> On the other hand, now that I see this algorithm, perhaps the 'points' 
>> drawing object could be improved to admit arrays of coordinates instead 
>> of only lists and matrices.
>>     
> Can you expand it ?
>   
I could try it.

> Do you think about drawing only array Hits in 3D.
> h(x,y):=Hits[fix(X),fix(Y)]/HitLimit;
> It would be an diagram like fig 27 in "the beauty of fractals" by Peitgen.
> Can you do it ?
>
>   
Sorry, I don't have this reference at hand.

--

-- 
Mario Rodriguez Riotorto
http://www.telefonica.net/web2/biomates
Robert Dodier | 1 Mar 22:57 2008
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Re: other than clisp precompiled packages?

On 2/29/08, Robert Gloeckner <Robert.Gloeckner <at> gmx.net> wrote:

>  Maybe someone else already knows of links to
>  other-than-clisp-maxima-binaries for windows/linux?

The Windows installer (at the Sourceforge download page) has
Maxima compiled with GCL.
I believe there are various rpms floating around but you would
have to google for them, I don't have any links offhand.
The Maxima ports page might have some links.
http://maxima.sourceforge.net/wiki/index.php?Maxima%20ports
Another option is to recompile from a tarball or source rpm.

HTH

Robert Dodier
Jan Brosius | 1 Mar 23:05 2008
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maxima does not work

Hi,

I am using fedora 8 , x86_64 . I have installed maxima 5.14.0-4 , 
maxima-runtime-sbcl 5.14.0-4 and sbcl 1.013-1 , but when I type maxima 
in the terminal window maxima doesn't start. I get this:

[Jan <at> localhost ~]$ maxima

debugger invoked on a SIMPLE-ERROR in thread #<THREAD "initial thread" 
{10041BA251}>:
  Error during processing of initialization file /home/Jan/.sbclrc:

  Don't know how to REQUIRE ASDF-INSTALL.
See also:
  The SBCL Manual, Variable *MODULE-PROVIDER-FUNCTIONS*
  The SBCL Manual, Function REQUIRE

Type HELP for debugger help, or (SB-EXT:QUIT) to exit from SBCL.

restarts (invokable by number or by possibly-abbreviated name):
  0: [CONTINUE] Ignore and continue processing.
  1: [ABORT   ] Skip this initialization file.
  2:            Skip to toplevel READ/EVAL/PRINT loop.
  3: [QUIT    ] Quit SBCL (calling #'QUIT, killing the process).

((LAMBDA (SB-IMPL::E)) #<SB-INT:EXTENSION-FAILURE {10042DFBC1}>)
0]

Does anyone know what's wrong (sbcl works).

(Continue reading)

Edwin Woollett | 1 Mar 23:07 2008
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pull integer inside power?

Is there a way to make the conversions:

a^2/4 =>  (a/2)^2

or  a^3/27 => (a/3)^3

where a is a polynomial?

ted
win xp , v 5.14
Robert Dodier | 1 Mar 23:19 2008
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Re: maxima does not work

On 3/1/08, Jan Brosius <jan.brosius <at> skynet.be> wrote:

>   Error during processing of initialization file /home/Jan/.sbclrc:
>   Don't know how to REQUIRE ASDF-INSTALL.

Hmm. Maybe it would work if you rename .sbclrc temporarily so
that SBCL doesn';t read it. Or maybe you can out
(require 'asdf-install) or whatever SBCL is complaining about.

If that doesn't help, try launching maxima with the --verbose
option, which will show the SBCL command line.

Sorry I can't be more helpful -- just guessing here.

Robert Dodier
Michael Carey | 1 Mar 09:07 2008

Error with maxima

I gei this when try to plot a function...
Maxima encountered a Lisp error:

 Error in PROGN [or a callee]: Broken pipe

Automatically continuing.
To reenable the Lisp debugger set *debugger-hook* to nil
How do i fix this please.

--

-- 
Mick Carey
NSW Australia
msn mickpc <at> bigpond.com
yahoo mick888200
Richard Fateman | 2 Mar 01:52 2008
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Re: pull integer inside power?

Edwin Woollett wrote:
> Is there a way to make the conversions:
>
> a^2/4 =>  (a/2)^2
>
> or  a^3/27 => (a/3)^3
>
> where a is a polynomial?
>
> ted
> win xp , v 5.14
> _______________________________________________
> Maxima mailing list
> Maxima <at> math.utexas.edu
> http://www.math.utexas.edu/mailman/listinfo/maxima
>   
try ratsubst( b,a/3,a^3/27).

Maxima will try pretty hard to simplify 3^3 to 27, which it considers 
simpler.

You can try factor( 27); but that 3^3 will not stay around for long 
unless you rename it as, say, b^3.

Basically, you are fighting against the system's notion of what it is 
supposed to do.

RJF
Robert Dodier | 2 Mar 02:26 2008
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Re: Error with maxima

On 3/1/08, Michael Carey <mickpc <at> bigond.com> wrote:

> I gei this when try to plot a function...
>  Maxima encountered a Lisp error:
>
>   Error in PROGN [or a callee]: Broken pipe

Try a different plot format -- see what get_plot_option(plot_format) returns.
If it says gnuplot_pipes, try set_plot_option([plot_format, gnuplot])
instead or set_plot_option([plot_format, openmath]).

Hope this helps,

Robert Dodier

Gmane