[GAP Forum] Saving graphics

[Stefan Kohl]

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.

If you experience something else, then please let me know!

Best wishes,

    Stefan Kohl