linalg::delRow
-- delete matrix
rowslinalg::delRow
(A, r)
returns a copy of the
matrix A in which the row with index r is
deleted.
linalg::delRow(A, r)
linalg::delRow(A, r1..r2)
linalg::delRow(A, list)
A |
- | an m x n matrix of a domain of category
Cat::Matrix |
r |
- | the row index: a positive integer <= m |
r1..r2 |
- | a range of row indices (positive integers <= m) |
list |
- | a list of row indices (positive integers <= m) |
a matrix of a domain of category Cat::Matrix(R)
, where
R
is the component ring of A
, or the void
object of type DOM_NULL
.
linalg::col
, linalg::delCol
, linalg::row
linalg::delRow
(A, r1..r2)
deletes those
rows whose indices are in the range r1..r2
. If r2
< r1
then the input matrix A
is returned.linalg::delRow
(A, list)
deletes those
rows whose indices are contained in list
.DOM_NULL
is returned.We define the following matrix:
>> A := matrix([[1, 2], [3, 4], [5, 6], [7, 8]])
+- -+ | 1, 2 | | | | 3, 4 | | | | 5, 6 | | | | 7, 8 | +- -+
and illustrate the three different input formats for
linalg::delRow
:
>> linalg::delRow(A, 2)
+- -+ | 1, 2 | | | | 5, 6 | | | | 7, 8 | +- -+
>> linalg::delRow(A, [1, 4])
+- -+ | 3, 4 | | | | 5, 6 | +- -+
>> linalg::delRow(A, 2..4)
+- -+ | 1, 2 | +- -+
DOM_NULL
instead of the object
NIL
is returned.