transform 2 txt files in igraph oblect in R

Good afternoon.
I have 2 txt files. One containing one column the nodes and the other links( multiple columns separated by spaces containing 0(no links) and 1(directed links). I do not have any kind of headers in the files.
I want to import in R and transform them in graph object.
Example of node file.(column 1)

135
246
358

....

Example of links file.(multiple columns)

0     0      0     1     0
1     0      1     0     0
0     0      0     0     0

...........................

I tried https://kateto.net/network-visualization but with no success.
I convert them in Excel but no success.
Please I need you help...

Solution

Here is a way of creating a graph from two files, one with the nodes names and the other with the adjacency matrix.

Suppose the files names are as follows:

nodesfile <- "nodes.txt"
linksfile <- "links.txt"

Since they are to be read in as a vector and as a matrix, respectively, function scan can be used.

nodes <- scan(file = nodesfile, what = character())
links <- scan(file = linksfile)

Now first coerce the vector links above to a matrix and then create the graph. The code below assumes the graph is directed, see help("graph_from_adjacency_matrix").

library(igraph)

links <- matrix(links, 
                nrow = length(nodes), 
                byrow = TRUE,
                dimnames = list(nodes, nodes))

g <- graph_from_adjacency_matrix(links)
plot(g)