Re: [igraph] read inputs from adjacency matrix

[WM Oxbury]

In R, I have found the following a convenient way to convert  
miscellaneous formats. This example takes any number of whitespace- 
separated columns and picks out the relevant ones for reading into  
"ncol" format:

pipe.graph = function(x, col1, col2){
  read.graph(
             pipe(sprintf("cut -f%d,%d -d' ' %s", col1, col2, x)),
             format="ncol"
             )
}

But the point is that you can replace the string in the pipe()  
function with any (unix) command-line preformatting - I've used  
various variations on this.

Don't know if that's any help for your problem.

Bill.



On 22 May 2009, at 13:36, Gábor Csárdi wrote:

> Pankay, using R, Python or C?
>
> Gabor
>
> On Fri, May 22, 2009 at 2:17 PM, pankaj borah
> <address@hidden> wrote:
> > Dear all ,
> >
> > I am just wondering if there is a way to read inputs from adjacency  
> > matrix .
> > I am using igraph module. I want to directly load the input as  
> > adjacency
> > instead of reading as edgelist or pajek format. Can anypne help ?
> >
> > Thanks ,
> >
> > Pankaj Barah
> > Mathematical modelling & Computational Biology Group
> > Centre for Cellular & Molecular Biology
> > Uppal Road, Hyderabad 500 007, AP, India
> >
> >
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>
> --
> Gabor Csardi <address@hidden>     UNIL DGM
>
>
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