In my homemade function ‘readdata()’ I have: Data = csv.read(filename; delim=‘,’, DataFrame) where ‘filename’ refers to one of my data inputfiles, named e.g. ‘instance.txt’. This resulted from my code in julia-1.0. When I try to run this, ‘Data’ remains empty; I cannot extract data from it.

You are getting keyword arguments and positional arguments mixed up CSV.read(filename, DataFrame; delim = ',')

When I do that I get the following: Data = CSV.read(filename, DataFrame; delim=‘,’) #function read(source, sink=nothing; copycols::Bool=false, kwargs…) #if sink === nothing #Data = CSV.read(filename; delim=‘,’, DataFrame) #end #Tables.CopiedColumns(CSV.File(source; kwargs…)) |> sink #end Wha…

[image] jjdegruijter: What to do with it? First you should try this .

I got this comment: ‘’’ #function read(source, sink=nothing; copycols::Bool=false, kwargs…) …#if sink === nothing …#Data = CSV.read(filename; delim=‘,’, DataFrame) …#end …#Tables.CopiedColumns(CSV.File(source; kwargs…)) |> sink #end ‘’’

#function read(source, sink=nothing; copycols::Bool=false, kwargs…) ..#if sink === nothing ....#Data = CSV.read(filename; delim=’,’, DataFrame) ..#end ..#Tables.CopiedColumns(CSV.File(source; kwargs…)) |> sink #end

I copied the comment (with 6 lines). The indentation and my triple backtics disappeared.

you are not describing the problem you are encountering in your code

After my code line ‘Data = CSV.read(filename, DataFrame; delim=‘,’)’ Julia inserted 6 lines of code, all commented. I didn’t know what to do with it, because I don’t understand what these 6 lines do. When I uncomment them, and try to extract a collumn from Data by ‘x = Data[:1]’ Iget ‘UndefVarErro…

Using CSV.read() to import data from a data input file into a DataFrame

General Usage

rafael.guerra February 27, 2022, 8:00am 5

First you should try this.

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Using CSV.read() to import data from a data input file into a DataFrame

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