facebook/prophet

Rcpp error when using prophet::prophet() instead of library(prophet)

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#285 opened on Aug 31, 2017

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Description

When I don't use library(prophet) and instead use the fully-qualified prophet::prophet, I get the following in my console:

ds <- seq(as.Date('2005-04-01'), as.Date('2005-09-03'), by='day') x <- (1:length(ds))/length(ds) y <- rnorm(length(ds), x * (1 - x) + 0.5, 0.1) prophet::prophet(data.frame(ds = ds, y = y), yearly.seasonality = FALSE)

Error in .Object$initialize(...) : could not find function "cpp_object_initializer" failed to create the optimizer; optimization not done Error in matrix(m$params[[name]], nrow = n.iteration) : 'data' must be of a vector type, was 'NULL'

I'm using the latest revision from master (via devtools::install_github('facebookincubator/prophet', subdir='R'))

Contributor guide

Research direction
Investigate how the Rcpp module is initialized when using fully qualified function calls vs library loading. Check if the RcppExports.cpp file's generated code properly registers the module, and whether the NAMESPACE file includes appropriate useDynLib directives.
Tech stack
rcpp
Domain
datamachine learning
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
R
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
65