[GAP Forum] Saving graphics

[Justin C. Walker]

On Feb 17, 2012, at 18:43 , Asst. Prof. Dmitrii (Dima) Pasechnik wrote:

> Hi Stephan,
> 
> On 18 February 2012 06:43, Stefan Kohl <stefan at mcs.st-and.ac.uk> wrote:
>> Dear Forum,
>> 
>> Rohit Gupta asked:
>> 
>>> One of the exercises ( um, by Stephen Kohl I think ) gives the following
>>> solution for drawing an Ulam spiral of primes. I am not sure whether the
>>> 
>>> "SaveAsBitmapPicture"
>>> function requires a special package. Does it?
>> 
>> And Dmitrii Pasechnik answered:
>> 
>>> this needs RCWA package installed and loaded.
>> 
>> Only this is true.
>> 
>>> And it in turn needs a slew of other packages, such as anluth, which
>>> in turn needs Kant, and the latter is not even possible to install on some systems...
>> 
>> However this statement is plainly wrong -- the RCWA package is part of
>> the standard GAP distribution (thus if you have GAP you also have RCWA),
>> and it can be loaded and used without any problems, under any operating
>> system for which GAP is available. -- Just enter "LoadPackage("rcwa");".
>> Possible warnings from other packages (non-compiled binaries etc.) can
>> savely be ignored, as they have no influence on the functionality of RCWA.
> 
> RCWA requires Polycyclic, according to its readme.
> 
> README of Polycyclic says:
> To have the  full functionality of the package  available you need the
> GAP 4 package Alnuth and the Computer Algebra System Kant installed.
> Its init.g has the line
> RequirePackage("alnuth");
> 
> In turn, Alnuth 2.3.1 *appears* to require KASH.
> KASH is not available on MacOSX 10.6.

Not strictly true:
23095	 kash	justin	   0.0 2  11.3 MB  240 KB  224.3 MB  PowerPC	
428 iTunes Helper justin   0.0 4  9.0 MB   6.2 MB  126.3 MB  Intel (64 bit)

(Mac Pro, Dual 6-core Xeon, Mac OS X, 10.6.8).  I must have found Rosetta somewhere :-}

Justin

--
Justin C. Walker
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