[GAP Forum] Saving graphics

[Asst. Prof. Dmitrii (Dima) Pasechnik]

On 18 February 2012 11:24, Justin C. Walker <justin at mac.com> wrote:
>
> 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 :-}

I didn't even know such thing exists:
http://en.wikipedia.org/wiki/Rosetta_(software)

However, with new MacOSX (7) it's gone, so it's really time to move on...

Best,
Dima


>
> Justin
>

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