No method matching error when working with Vector{Int64]-CodePudding

I have the following code where firstly I add the values for each index from two columns and creating Vector{Int64}

df = CSV.read(joinpath("data", "data.csv"), DataFrame)
adding_columns = df.firstcolumn   df.secondcolumn

Then I will create a function as following:

function fnct(data::Vector{T}; var= 8) where { T <: Number }
V = []
for x in 1:size(data)[1]
    strt = x-var
    ending = x var
    avg = 0
    if strt < 1
        for y in 1:x var
           avg  =  avg data[y]
        end
        avg = avg/(x var-1)
    elseif  ending >  size(data)[1]
        for y in x-var:size(data)[1]
           avg  =  avg data[y]
        end
        avg = avg/(size(data)-x-var)
    else
        for y in x-var:x var
           avg  =  avg data[y]
        end 
        avg = avg/(2*var)
    end
    push!(V,avg)
    
end
return V

end

When trying:

typeof(adding_columns)

I will get:

Vector{Int64}

however when calling

fnct(adding_columns)

I will get:

ERROR: MethodError: no method matching -(::Tuple{Int64}, ::Int64)

I presume that it takes my adding_columns as Tuple but I do not get it why, when the typeof is giving me Vector.

How could I solve this problem?

CodePudding user response：

size(data) is a tuple:

julia> size([1,2,3]::Vector{Int})
(3,)

...but you're subtracting an integer from it in avg = avg/(size(data)-x-var).

Did you mean avg = avg/(length(data)-x-var) or avg = avg/(size(data, 1)-x-var)?