Re: [igraph] create graph object

[Tamas Nepusz]

Hi,

You need to create a graph from the data frame first using graph_from_data_frame.

T.

On Wed, Feb 22, 2017 at 3:37 PM, Dieunel Derilus <address@hidden> wrote:

Dear  Igraph develpppers and memebers

 I am facing some difficulties to remove redundancy from a    network using  'simplify' in 'igraph' package. My network is in a table file, firstly my data frame as an object and secondly I run the command line: simplify(g, remove.multiple = TRUE), and have an output error saying  created object is   not  an igraph object . My question is how I can convert a text file  to a graph object  to avoid this error message ?

 

Here is   my input and the output in R :

> g <- read.table("data.txt")

> g

  V1 V2

1  a  b

2  b  a

3  d  o

4  d  l

> g <- read.table("data.txt")

> simplify(g, remove.multiple = TRUE)

Error in simplify(g, remove.multiple = TRUE) : Not a graph object

Thanks in advance 

DD

--------------------------

Derilus Dieunel

Graduate Student

Department of Environmental Sciences

University of Puerto Rico, Río Piedras

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