Re: [igraph] author lists to network

[Simone Gabbriellini]

ops, I get your question wrong! sorry for my previous email!

simone

Il giorno 10/mar/2011, alle ore 01.31, Alex D'Amour ha scritto:

> Stuart,
> 
> The best way to do this is to first construct a list that maps author
> to paper. You should do this in a dataframe with columns Paper and
> Author:
> 
> Paper, Author
> Paper1, John
> Paper1, Mary
> Paper1, Sam
> Paper2, Roger
> etc...
> 
> Then you can use the merge command in R to merge this dataframe with itself:
> 
> df2 <- merge(df, df, by="Paper")
> 
> This will give you a dataframe like the one that you want. You will
> probably want to filter out the self loops:
> 
> df3 <- df2[df2$author.x != df2$author.y,]
> 
> This should get you what you're looking for.
> 
> HTH,
> Alex
> 
> On Wed, Mar 9, 2011 at 7:10 PM, Stuart Kininmonth
> <address@hidden> wrote:
>> Hi Networkers,
>> 
>> 
>> 
>> Just trying to take a large list of authors who have worked on papers and
>> turn into network in R igraph.
>> 
>> So input looks like (simplified but can be any number of authors per paper):
>> 
>> Paper1, John, Mary, Sam
>> 
>> Paper 2, John, Roger, Trevor, Sue, Peter
>> 
>> Etc…
>> 
>> 
>> 
>> I need to make it a pair wise list (or alternative for igraph input) for
>> each row so looking like this:
>> 
>> John, Mary
>> 
>> John, Sam
>> 
>> Mary, Sam
>> 
>> John, Roger
>> 
>> John, Trevor
>> 
>> John, Sue
>> 
>> John, Peter
>> 
>> Roger, Trevor
>> 
>> Roger, sue
>> 
>> Roger, peter,
>> 
>> Trevor, sue
>> 
>> Trevor, peter
>> 
>> Sue, peter
>> 
>> Etc…
>> 
>> 
>> 
>> Any suggestions welcomed.
>> 
>> 
>> 
>> cheers
>> 
>> 
>> 
>> 
>> 
>> Stuart Kininmonth
>> 
>> Spatial Ecologist
>> 
>> Australian Institute of Marine Science
>> 
>> PMB #3, Townsville, Qld, 4819 Australia
>> 
>> w: 61 7 47534334
>> 
>> m: 0439 673 546
>> 
>> 
>> 
>> “It is the set of the sails, not the direction of the wind that determines
>> which way we will go.” Jim Rohn
>> 
>> 
>> 
>> 
>> 
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