logitr

examples

Running examples in ‘logitr-Ex.R’ failed
The error most likely occurred in:

> ### Name: logitr
> ### Title: The main function for estimating logit models
> ### Aliases: logitr
> ### Keywords: logit logitr mixed mnl mxl willingness-to-pay wtp
> 
> ### ** Examples
> 
> # For more detailed examples, visit
> # https://jhelvy.github.io/logitr/articles/
> 
> library(logitr)
> 
> # Estimate a MNL model in the Preference space
> mnl_pref <- logitr(
+   data    = yogurt,
+   outcome = "choice",
+   obsID   = "obsID",
+   pars    = c("price", "feat", "brand")
+ )
Running model...
Done!
> 
> # Estimate a MNL model in the WTP space, using a 5-run multistart
> mnl_wtp <- logitr(
+   data           = yogurt,
+   outcome        = "choice",
+   obsID          = "obsID",
+   pars           = c("feat", "brand"),
+   scalePar       = "price",
+   numMultiStarts = 5
+ )
Running multistart...
  Random starting point iterations: 5
  Number of cores: 15

 *** caught segfault ***
address 0x110, cause 'invali
...[truncated]...
t = TRUE)
16: sendMaster(try(lapply(X = S, FUN = FUN, ...), silent = TRUE))
17: FUN(X[[i]], ...)
18: lapply(seq_len(cores), inner.do)
19: parallel::mclapply(miList, runModel, mc.cores = numCores)
20: withCallingHandlers(expr, warning = function(w) if (inherits(w,     classes)) tryInvokeRestart("muffleWarning"))
21: suppressWarnings(parallel::mclapply(miList, runModel, mc.cores = numCores))
22: withCallingHandlers(expr, message = function(c) if (inherits(c,     classes)) tryInvokeRestart("muffleMessage"))
23: suppressMessages(suppressWarnings(parallel::mclapply(miList,     runModel, mc.cores = numCores)))
24: runMultistart(modelInputs)
25: logitr(data = yogurt, outcome = "choice", obsID = "obsID", pars = c("feat",     "brand"), scalePar = "price", numMultiStarts = 5)
An irrecoverable exception occurred. R is aborting now ...
Error in names(x) <- value : 
  'names' attribute [3] must be the same length as the vector [0]
Calls: logitr -> getMultistartSummary -> colnames<-
Execution halted

re-building of vignette outputs

Error(s) in re-building vignettes:
--- re-building ‘basic_usage.Rmd’ using rmarkdown

 *** caught segfault ***
address 0x110, cause 'invalid permissions'

Traceback:
 1: mi$logitFuncs$getMnlV(pars, d$X, d$scalePar)
 2: eval_f(x0, ...)
 3: nloptr::nloptr(x0 = mi$model$startVals, eval_f = mi$evalFuncs$objective,     mi = mi, opts = mi$options)
 4: doTryCatch(return(expr), name, parentenv, handler)
 5: tryCatchOne(expr, names, parentenv, handlers[[1L]])
 6: tryCatchList(expr, classes, parentenv, handlers)
 7: tryCatch({    result <- nloptr::nloptr(x0 = mi$model$startVals, eval_f = mi$evalFuncs$objective,         mi = mi, opts = mi$options)}, error = function(e) {})
 8: system.time({    model <- mi$model    result <- NULL    tryCatch({        result <- nloptr::nloptr(x0 = mi$model$startVals, eval_f = mi$evalFuncs$objective,             mi = mi, opts = mi$options)    }, error = function(e) {    })    if (!is.null(result)) {        model$fail <- FALSE        model$coefficients <- result$solu
...[truncated]...
ict.Rmd:91-109 [unnamed-chunk-5]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error in `names(x) <- value`:
! 'names' attribute [3] must be the same length as the vector [0]
---
Backtrace:
    ▆
 1. └─logitr::logitr(...)
 2.   └─logitr:::getMultistartSummary(allModels)
 3.     └─base::`colnames<-`(...)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Error: processing vignette 'predict.Rmd' failed with diagnostics:
'names' attribute [3] must be the same length as the vector [0]
--- failed re-building ‘predict.Rmd’

--- re-building ‘summarizing_results.Rmd’ using rmarkdown
--- finished re-building ‘summarizing_results.Rmd’

--- re-building ‘utility_models.Rmd’ using rmarkdown
--- finished re-building ‘utility_models.Rmd’

SUMMARY: processing the following files failed:
  ‘basic_usage.Rmd’ ‘mnl_models.Rmd’ ‘mnl_models_weighted.Rmd’
  ‘predict.Rmd’

Error: Vignette re-building failed.
Execution halted