columnNames

Syntax

columnNames(X)

Arguments

X is a matrix/table.

Details

Return the column names of X as a vector. Please check related function: rowNames.

Examples

x=1..6$2:3;
x;
#0 #1 #2
1 3 5
2 4 6
x.rename!(`a`b`c);
a b c
1 3 5
2 4 6
x.columnNames();
// output
["a","b","c"]

t = table(1 2 3 as id, 4 5 6 as value, `IBM`MSFT`GOOG as name);
t;
id value name
1 4 IBM
2 5 MSFT
3 6 GOOG
columnNames t;
// output
["id","value","name"]

t[t.columnNames().tail()];
// output
["IBM","MSFT","GOOG"] // retrieve the last column of a table as a vector