slicedim
slicedim(A, d, i)
Return all the data of A
where the index for dimension d
equals i
. Equivalent to A[:,:,...,i,:,:,...]
where i
is in position d
.
Examples
-
Slice a specific dimension of an array:
julia> A = [1 2 3; 4 5 6; 7 8 9]; julia> slicedim(A, 2, 2) 3-element Array{Int64,1}: 2 5 8
This example slices the second dimension (
d = 2
) of the arrayA
and returns the elements where the index is equal toi = 2
. -
Slice a higher-dimensional array:
julia> B = rand(2, 3, 4); julia> slicedim(B, 1, 2) 3×4 Array{Float64,2}: 0.697879 0.390278 0.775196 0.607335 0.474109 0.682906 0.999054 0.136312 0.867209 0.923193 0.849379 0.942011
In this example, we slice the first dimension (
d = 1
) of the 3D arrayB
and return the corresponding elements where the index isi = 2
. - Slice a specific dimension of a matrix:
julia> C = [1 2 3; 4 5 6; 7 8 9]; julia> slicedim(C, 2, 3) 3-element Array{Int64,1}: 3 6 9
Here, we slice the second dimension (
d = 2
) of the matrixC
and return the elements where the index is equal toi = 3
.
Common mistake example:
julia> D = [10 20; 30 40];
julia> slicedim(D, 3, 1)
ERROR: DimensionError: dimension out of range
In this case, the provided dimension (d
) is out of range for the array D
. It's crucial to ensure that the dimension specified is valid for the given array. Always check the dimensions and their ranges before using the slicedim
function.
See Also
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