Error(s) in re-building vignettes:
--- re-building ‘memnet.Rmd’ using rmarkdown
 ----------- FAILURE REPORT -------------- 
 --- failure: the condition has length > 1 ---
 --- srcref --- 
: 
 --- package (from environment) --- 
memnet
 --- call from context --- 
network_stats(edg_to_adj(net_comunity))
 --- call from argument --- 
if (class(adj) != "igraph") {
    g = igraph::graph_from_adjacency_matrix(adj, mode = mode)
    if (!is.null(weights)) 
        igraph::E(g)$weight = weights
} else {
    g = adj
}
 --- R stacktrace ---
where 1: network_stats(edg_to_adj(net_comunity))
where 2: eval(expr, envir, enclos)
where 3: eval(expr, envir, enclos)
where 4: withVisible(eval(expr, envir, enclos))
where 5: withCallingHandlers(withVisible(eval(expr, envir, enclos)), warning = wHandler, 
    error = eHandler, message = mHandler)
where 6: handle(ev <- withCallingHandlers(withVisible(eval(expr, envir, 
    enclos)), warning = wHandler, error = eHandler, message = mHandler))
where 7: timing_fn(handle(ev <- withCallingHandlers(withVisible(eval(expr, 
    envir, enclos)), warning = wHandler, error = eHandler, message = mHandler)))
where 8: evaluate_call(expr, parsed$src[[i]], envir = envir, enclos = enclos, 
    debug = debug, last = i == length(out), use_try = stop_on_error != 
        2L, keep_warning = keep_warning, keep_message = keep_message, 
    output_handler = output_handler, include_timing = include_timing)
where 9: evaluate::evaluate(...)
where 10: evaluate(code, envir = env, new_device = FALSE, keep_warning = !isFALSE(options$warning), 
    keep_message = !isFALSE(options$message), stop_on_error = if (options$error && 
        options$include) 0L else 2L, output_handler = knit_handlers(options$render, 
        options))
where 11: in_dir(input_dir(), evaluate(code, envir = env, new_device = FALSE, 
    keep_warning = !isFALSE(options$warning), keep_message = !isFALSE(options$message), 
    stop_on_error = if (options$error && options$include) 0L else 2L, 
    output_handler = knit_handlers(options$render, options)))
where 12: block_exec(params)
where 13: call_block(x)
where 14: process_group.block(group)
where 15: process_group(group)
where 16: withCallingHandlers(if (tangle) process_tangle(group) else process_group(group), 
    error = function(e) {
        setwd(wd)
        cat(res, sep = "\n", file = output %n% "")
        message("Quitting from lines ", paste(current_lines(i), 
            collapse = "-"), " (", knit_concord$get("infile"), 
            ") ")
    })
where 17: process_file(text, output)
where 18: knitr::knit(knit_input, knit_output, envir = envir, quiet = quiet)
where 19: rmarkdown::render(file, encoding = encoding, quiet = quiet, envir = globalenv(), 
    output_dir = getwd(), ...)
where 20: vweave_rmarkdown(...)
where 21: engine$weave(file, quiet = quiet, encoding = enc)
where 22: doTryCatch(return(expr), name, parentenv, handler)
where 23: tryCatchOne(expr, names, parentenv, handlers[[1L]])
where 24: tryCatchList(expr, classes, parentenv, handlers)
where 25: tryCatch({
    engine$weave(file, quiet = quiet, encoding = enc)
    setwd(startdir)
    output <- find_vignette_product(name, by = "weave", engine = engine)
    if (!have.makefile && vignette_is_tex(output)) {
        texi2pdf(file = output, clean = FALSE, quiet = quiet)
        output <- find_vignette_product(name, by = "texi2pdf", 
            engine = engine)
    }
    outputs <- c(outputs, output)
}, error = function(e) {
    thisOK <<- FALSE
    fails <<- c(fails, file)
    message(gettextf("Error: processing vignette '%s' failed with diagnostics:\n%s", 
        file, conditionMessage(e)))
})
where 26: tools:::buildVignettes(dir = "/data/gannet/ripley/R/packages/tests-devel/memnet.Rcheck/vign_test/memnet", 
    ser_elibs = "/tmp/RtmpGqfEcM/file1a77456b2f4.rds")

 --- value of length: 2 type: logical ---
[1] TRUE TRUE
 --- function from context --- 
function (adj, giant = FALSE, weights = NULL, mode = "undirected") 
{
    if (class(adj) != "igraph") {
        g = igraph::graph_from_adjacency_matrix(adj, mode = mode)
        if (!is.null(weights)) 
            igraph::E(g)$weight = weights
    }
    else {
        g = adj
    }
    comp = l_comp(g, igraph = TRUE)
    comp_p = comp[[2]]
    if (giant == TRUE) {
        g = comp[[1]]
    }
    n_v = igraph::vcount(g)
    n_e = igraph::ecount(g)
    k = n_e/n_v
    cc = igraph::transitivity(g, type = "localaverage")
    cc_c = cc/(k/n_v)
    aspl = igraph::mean_distance(g, directed = mode == "directed")
    aspl_c = aspl/(log(n_v)/log(n_e))
    smallw = cc_c/aspl_c
    assor = igraph::assortativity_degree(g, directed = mode == 
        "directed")
    res = c(n_v, n_e, k, cc, cc_c, aspl, aspl_c, smallw, assor, 
        comp_p)
    names(res) = c("|V|", "|E|", "k", "C", "Cc", "L", "Lc", "S", 
        "A", "p")
    res
}
<bytecode: 0x4c589f0>
<environment: namespace:memnet>
 --- function search by body ---
Function network_stats in namespace memnet has this body.
 ----------- END OF FAILURE REPORT -------------- 
Quitting from lines 33-59 (memnet.Rmd) 
Error: processing vignette 'memnet.Rmd' failed with diagnostics:
the condition has length > 1
--- failed re-building ‘memnet.Rmd’

SUMMARY: processing the following file failed:
  ‘memnet.Rmd’

Error: Vignette re-building failed.
Execution halted