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 <[email protected]> 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 > > > > _______________________________________________ > igraph-help mailing list > [email protected] > https://lists.nongnu.org/mailman/listinfo/igraph-help > >
_______________________________________________ igraph-help mailing list [email protected] https://lists.nongnu.org/mailman/listinfo/igraph-help
