Problems creating an edgelist and nodelist

[hidde1998]

I'm new to Rstudio and this community so my apologies if i posted this in the wrong place. I have a problem when I'm trying to create an igraph object. I entered the following code:
EL= is my edgelist (from data set 1)
NL= my nodelist (from data set 2)

library(igraph)
EL <- graph_from_data_frame(violentcrime_95_matrix2)
NL <- graph_from_data_frame(funding_85_95_matrix2)
EL <- get.edgelist(EL)
NL <- get.edgelist(NL)
g <- graph_from_data_frame(d=EL, vertices = NL, directed = FALSE)

However, it came up with the following error:
Error in graph_from_data_frame(d = EL, vertices = NL, directed = FALSE) :
Some vertex names in edge list are not listed in vertex data frame

I have checked it more times than i can count but my NL and EL both contain the same names, I am 100% sure of that. Is there anything i'm doing wrong?

[pieterjanvc]

Hi,

Welcome to the RStudio community!

The easiest way for us to help you, is if you can provide us a reprex of the issue you're having. A reprex consists of the minimal code and data needed to recreate the issue/question you're having. You can find instructions how to build and share one here:

FAQ: How to do a minimal reproducible example ( reprex ) for beginners

A minimal reproducible example consists of the following items: A minimal dataset, necessary to reproduce the issue The minimal runnable code necessary to reproduce the issue, which can be run on the given dataset, and including the necessary information on the used packages. Let's quickly go over each one of these with examples: Minimal Dataset (Sample Data) You need to provide a data frame that is small enough to be (reasonably) pasted on a post, but big enough to reproduce your issue. Let's say, as an example, that you are working with the iris data frame head(iris) #> Sepal.Length Sepal.Width Petal.Length Petal.Width Species #> 1 5.1 3.5 1.4 0.…

Once we have this, it will be much easier to pinpoint what's wrong and help you fix it!

Good luck,
PJ