Get a view of the diagonal entries of an ndarray
npm install ndarray-diagonalndarray-diagonal
================
Extract a view of the diagonal entries of an ndarray (no copying necessary!)
``javascript
var pack = require('ndarray-pack')
var diagonal = require('ndarray-diagonal')
var show = require('ndarray-show')
var M = pack([[1, 0, 2],
[2, 3, 1],
[4, 5, 0]])
var diag = diagonal(M)
console.log('diag=\n', show(diag))
//diag is actually a view of the entries of M
diag.set(2, 1e5) //Update the 3rd diagonal entry
console.log('M=\n', show(M))
`
Output:
`
diag=
1.000 3.000 0.000
M=
1.000 2.000 4.000
0.000 3.000 5.000
2.000 1.000 1.00e+5
`
* M is an ndarray
Returns A view of the diagonal entries of M`