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From: | Peter Flom |
Subject: | [igraph] Odd error message |
Date: | Sat, 21 Apr 2012 12:10:31 -0400 |
Hello again When I run the following code <<<< DVg <- graph.empty() DVg <- add.vertices(DVg, nrow(DVtraits), ISBN=as.character(DVtraits[,1]), title=as.character(DVtraits[,2]), author = as.character(DVtraits[,3]), publisher = as.character(DVtraits[,4]), salesrank = as.character(DVtraits[,6]), category = as.character(DVtraits[,5])) names <- V(DVg)$ISBN ids <- 1:length(names)-1 names(ids) <- names from <- as.character(DVlinks[,1]) to <- as.character(DVlinks[,2]) edges <- matrix(c(ids[from], ids[to]), nc=2) DVg <- add.edges(DVg, t(edges)) >>>> I get (after running the last line) an error: Traceback: 1: .Call("R_igraph_add_edges", graph, as.numeric(edges), PACKAGE = "igraph") 2: add.edges(DVg, t(edges)) Error in add.edges(DVg, t(edges)) : caught access violation - continue with care Last time this happened, it turned out to be that there were some NA in the from and to, but there are not this time. I am not sure how to create a toy example…. Or what else would be helpful here. Thanks (and if someone wants me to send the data, I can send it) Peter Peter Flom Peter Flom Consulting http://www.statisticalanalysisconsulting.com/ http://www.IAmLearningDisabled.com |
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