[GAP Forum] "SimpleGroup" command

[Alexander Konovalov]

Dear Sara, Dima,

No, this should work on Windows. It uses IO package to download data from the remote
host, and GAP distribution for Windows includes IO binaries. Sara, which operating
system do you actually have?

This is where things may go wrong for AtlasRep:

1) IO package not compiled. Then AtlasRep may try to fallback to using wget for 
downloads, but if that is missing too, it will fail.

2) No internet connection, or some restrictive firewall settings.

3) No write permission in the directory where AtlasRep tries to write data.

It will be useful to see the error message (and it is better to copy and paste
the text into email instead of providing a screenshot) for the further advice.

Hope this helps
Alexander





> On 19 Apr 2016, at 09:35, Dima Pasechnik <dmitrii.pasechnik at cs.ox.ac.uk> wrote:
> 
> Dear Sarah,
> 
> On Tue, Apr 19, 2016 at 11:26:19AM +0430, Sara Dikson wrote:
>> Dear Forum
>> I used the "SimpleGroup("J4");" command for the Janko group.
>> But Gap can't recognize it. Also I used "AtlasGroup("J4");" but it return
>> "fail". I try it for "J3" but it return "fail".​
> 
> AtlasGroup("J3") and AtlasGroup("J4") should work, provided you have the necessary pre-requisits
> on. As far as I know it does not quite work on Windows, as it won't be able to get the data from the net.
> (Or it used to be the case in the past).
> Although you can download the data it needs manually.
> 
> 
>> errorg.png
>> <https://drive.google.com/file/d/0ByRpdyuq_c_ZdkJ3Q2xnMXpLMFE/view?usp=drive_web>
> 
> you did not set the permissions on this link to be public, I cannot open it.
> 
> HTH,
> Dmitrii