To check Jacob's suggestion about versions mismatch I completely removed
the DataFrames and ODBC packages using Pkg.rm and physically deleted the
directories from disk. I then added them via Pkg.add and Pkg,update.
I am running the julia nightlies build.
julia> versioninfo()
Julia Version 0.3.0-prerelease+1127
Commit bc73674* (2014-01-22 20:09 UTC)
Pkg.status()
- DataFrames 0.5.1
- ODBC 0.3.5
Pkg.checkout("ODBC")
INFO: Checking out ODBC master...
INFO: Pulling ODBC latest master...
INFO: No packages to install, update or remove
julia> Pkg.checkout("DataFrames")
INFO: Checking out DataFrames master...
INFO: Pulling DataFrames latest master...
INFO: No packages to install, update or remove
I did some digging. It looks like there is a mismatch in that countna
expects DataFrame columns to be DataArrays. However the ODBC package
returns DataFrames that have array columns (using the first constructor in
dataframe.jl). You guys would know better as to whether a change is needed
in the constructor or if countna should also accept Array columns.
I made some local changes to work around the issue.
show.jl:
line 42: if isna(col, i) changed to if isna(col[i])
line 322: missing[j] = countna(adf[j]) changed to missing[j] =
countna(isa(adf[j], DataArray) ? adf[j] : DataArray(adf[j]))
These work great for me.
