CODEWITHSUNDEEP
rdata.tabledevtools
jfreels
jfreels

Reputation: 123

data.table & devtools: install_github error - function works locally but not after installing package from github

I'm having trouble with the data.table package after installing a package from github using devtools. My custom function (which uses data.table functionality) works when I load the function locally, however when I create a custom package on github and install the package from github, the function no longer works.

Load the required packages:

require(PerformanceAnalytics)
if(!require(PerformanceAnalytics)) install.packages("PerformanceAnalytics");
require(PerformanceAnalytics)
require(data.table)
if(!require(data.table)) install.packages("data.table"); require(data.table)
require(devtools)
if(!require(devtools)) install.packages("devtools"); require(devtools)

Create a dummy dataset:

data(edhec)
EDHEC<-data.frame(date=index(edhec),coredata(edhec))
EDHEC<-melt(EDHEC,id.vars="date")
EDHEC<-data.table(EDHEC,key=c("variable","date"))

Install my package from github using devtools:

install_github("r_jfreels","jfreels"); require(jfreels)

Run my function:

test_date(EDHEC)

This gives an error: "Error in min(date) : invalid 'type' (closure) of argument"

Now create the function locally:

test_date<-function(DF) {
  DT<-data.table(date=DF$date,variable=DF$variable,value=DF$value,key=c('variable','value'))
  DT[,list(start_date=min(date),end_date=max(date)),by=variable]
}

Test the function again:

test_date(EDHEC)

This works.

This is driving me nuts and I don't know what the problem is.

Upvotes: 4

Views: 667

Answers (1)

GSee
GSee

Reputation: 49820

If you add Depends: data.table to your DESCRIPTION file, it will "work". However, you should really put in the effort to pass R CMD check -- right now, it's nowhere close to passing.

Upvotes: 5

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