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Apr 24, 2025
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Add diagm example #1298

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14ac1f7
Add `diagm` example
jishnub Apr 22, 2025
537ee46
Zero padding
jishnub Apr 22, 2025
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8 changes: 8 additions & 0 deletions src/dense.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -399,6 +399,7 @@ Construct a matrix with elements of the vector as diagonal elements.
By default, the matrix is square and its size is given by
`length(v)`, but a non-square size `m`×`n` can be specified
by passing `m,n` as the first arguments.
The diagonal will be zero-padded if necessary.

# Examples
```jldoctest
Expand All @@ -407,6 +408,13 @@ julia> diagm([1,2,3])
1 0 0
0 2 0
0 0 3

julia> diagm(4, 5, [1,2,3])
4×5 Matrix{Int64}:
1 0 0 0 0
0 2 0 0 0
0 0 3 0 0
0 0 0 0 0
```
"""
diagm(v::AbstractVector) = diagm(0 => v)
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