|
linalg[band] - create a band matrix
|
|
Calling Sequence
|
|
band(b, n)
|
|
|
Parameters
|
|
|
b
|
-
|
list or vector
|
|
n
|
-
|
positive integer
|
|
|
|
|
|
Description
|
|
|
•
|
The call band(b, n) creates an n x n banded matrix using the elements of b. The number of elements of b must be odd and not greater than 2*n-1.
|
|
•
|
If b has n elements, the middle n diagonals of the result are initialized to the elements of b, in left-to-right order. In each diagonal all elements have the same value.
|
|
•
|
If 2*n-1 is larger than the length of b, then the remaining sub- and super-diagonals are set to zero.
|
|
•
|
The matrix result uses a sparse indexing function.
|
|
•
|
The command with(linalg,band) allows the use of the abbreviated form of this command.
|
|
|
Download Help Document
Was this information helpful?
