drop

Syntax

drop(X, n)

Arguments

X is a vector/matrix/table.

n is an integer.

Details

  • If X is a vector, delete the first n or last n (if n is negative) elements.
  • If X is a matrix, delete the first n or last n (if n is negative) columns.
  • If X is a table, delete the first n or last n (if n is negative) rows.

Examples

x=1..10;
x.drop(2);
// output
[3,4,5,6,7,8,9,10]
x.drop(-2);
// output
[1,2,3,4,5,6,7,8]

x=1..10$2:5;
x;
#0 #1 #2 #3 #4
1 3 5 7 9
2 4 6 8 10 
drop(x,2);
#0 #1 #2
5 7 9
6 8 10 
x drop -2;
#0 #1 #2
1 3 5
2 4 6 
t=table(1 2 3 4 as x, 11..14 as y);
t;
x y
1 11
2 12
3 13
4 14 
t.drop(2);
x y
3 13
4 14