Re: FromAdjacencyMatrix / FromAdjacencyLists - broken? Workaround?
- To: mathgroup at smc.vnet.net
- Subject: [mg104323] Re: FromAdjacencyMatrix / FromAdjacencyLists - broken? Workaround?
- From: Andrew <dr.a.graham at googlemail.com>
- Date: Tue, 27 Oct 2009 05:01:09 -0500 (EST)
- References: <hbr57n$rg1$1@smc.vnet.net> <hbu80f$7k5$1@smc.vnet.net>
Looks like it's definitely a bug.
Syd Geraghty helpfully emailed to say that he got the same results on
his (Intel) Mac system running 7.0.1
Is it a 7.0.1 problem or could it be Intel chip-related?
Any other contributions welcome, including how to work around this in
the short term...
Best
Andrew
...
Andrew,
I get exactly the same output as you on my system detailed below.
Bug!
Cheers .... Syd
Syd Geraghty B.Sc, M.Sc.
Mathematica 7.0.1 for Mac OS X x86 (64 - bit) (18th February 2009)
MacOS X V 10.6 Snow LeopardMacBook Pro 2.33 GHz Intel Core 2 Duo 2GB
RAM
...
On Oct 24, 6:48 am, Andrew <dr.a.gra... at googlemail.com> wrote:
> I can't see the post in my browser, but Tom Dowling helpfully emailed
> to say that on his Mac (non-Intel) running Mathematica 7.0.0 the code
> above ran fine!
>
> I'm using 7.0.1 on a windows (32 bit) platform, OS XP Pro SP3. Just to
> check I'm not deluding myself, I ran an abbreviated version of the
> steps above again. Here's the inputs & outputs shown:
>
> In[1]:= << "Combinatorica`"
>
> In[2]:= Edges[Cycle[3, Type -> Directed]]
> Out[2]= {{1, 2}, {2, 3}, {3, 1}}
>
> In[3]:= Edges[FromAdjacencyMatrix[
> ToAdjacencyMatrix[Cycle[3, Type -> Directed], Type -> Directed],
> Type -> Directed]]
> Out[3]= {{1, 2}, {2, 3}, {1, 3}}
>
> Is it just my system or can anyone else reproduce this?
>
> Best regards
> Andrew