Selecting the value in a particular row of a column in a DataFrame

New to Julia
1

The following selects an entire column in a DataFrame:

select(df,:x)

But how do I select the second row of x, say?

2

select(df, :x). That doesn’t select the column, it makes a new DataFrame with only one column :x. i.e. it doesn’t return the array df.x.

For the vector you want

df.x # doesn't copy the column
df[!, :x] # doesn't copy the column
df[:, :x] # copies the column

For the second element you want

df[2, :x]
df.x[2]
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