CODEWITHSUNDEEP
julia
MDe
MDe

Reputation: 2508

DataFrames package functions using wrong types?

I installed the DataFrames package using JuliaStudio, with no problems. Then I tried to replicate the simple example here using the following code

using DataFrames
cd("my local directory here")
readtable("maindata.csv")

and got this error:

no method readtable!
(ParsedCSV,IOStream,Int64,ParseOptions{ASCIIString,UTF8String})

In the packages folder, I opened the file io.jl and saw the types that readtable! is expecting don't match what is shown in the error above.

function readtable!(p::ParsedCSV,
                    io::IO,
                    nrows::Int,
                    o::ParseOptions)

So I changed the second and third types in the readtable! definition to IOStream and Int64, respectively to match what the error above was showing. Then I tried to run 

readtable("maindata.csv")

again, and got the same error, but for a different function:

no method readnrows!
(ParsedCSV,IOStream,Int64,ParseOptions{ASCIIString,UTF8String})

How can I get the function readtable() to read my file successfully without needing to edit the types in all the package functions?

Upvotes: 3

Views: 577

Answers (1)

Ben Bolker
Ben Bolker

Reputation: 226766

Perhaps a disappointing answer, but this problem appears to be solved in the prerelease version/with version 0.5.4 of DataFrames.

julia> versioninfo(true)
Julia Version 0.3.0-prerelease
Platform Info:
  System: Linux (i686-linux-gnu)
  CPU: Intel(R) Core(TM)2 Duo CPU     P8800  @ 2.66GHz
  WORD_SIZE: 32
           Ubuntu 12.04.4 LTS
  uname: Linux 3.2.0-61-generic-pae #92-Ubuntu SMP Tue Apr 1 00:10:04 UTC 2014 i686 i686

Package Directory: /home/bolker/.julia/v0.3

3 required packages:
 - DataFrames                    0.5.4
 - MixedModels                   0.3.1
 - RDatasets                     0.1.1

Upvotes: 1

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