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);
[3,4,5,6,7,8,9,10]
$ x.drop(-2);
[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 |