I'm probably just being incredibly daft, but I can't figure out how to add
a new row to a DataFrame.
Basically, I have a bunch of data sets for which I want to perform some
calculations - lets say the mean and standard deviation of something - each
dataset corresponding to some named category of data. So I do the following
to construct my new DataFrame
julia> measures = DataFrame()
julia> measures[:Mean] = Float64[]
julia> measures[:StdDev] = Float64[]
julia> measures[:Category] = Symbol[]
Now, I want to add some values that are the results of a calculation on a
different data set, and I try this:
julia> push!(psispread, [1.0,0.1,:Fake])
ERROR: no method push!(DataFrame, Array{Any,1})
julia> append!(psispread, [1.0,0.1,:Fake])
ERROR: no method append!(DataFrame, Array{Any,1})
julia> psispread[1,:] = [1.0,0.1,:Fake]
ERROR: BoundsError()
in setindex! at /home/tlycken/.julia/v0.3/DataArrays/src/dataarray.jl:764
in insert_single_entry! at
/home/tlycken/.julia/v0.3/DataFrames/src/dataframe/dataframe.jl:410
in setindex! at
/home/tlycken/.julia/v0.3/DataFrames/src/dataframe/dataframe.jl:521
Is there a nice and simple way to add a row to a DataFrame without having
to do it one value at a time?
// T
