As indicated by the topic, I intend to replace some small matrices with the StaticArrays but the global sparse matrix created by SparseArrays.jl cannot be indexed by a SVector. A simple example is given as follows. using SparseArrays using StaticArrays A = spzeros(10, 10) ind1 = SVector(1, 2, 3, …

The sparse matrix A doesn’t hold any values, except for the default value zero (of default type Float64) which isn’t explicitly stored. Accessing any range of indices gives some dots: julia> A[ind1, ind1] 4×4 SparseMatrixCSC{Float64, Int64} with 0 stored entries: ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ …

Thank you very much! It succeeds in addressing my problem.

This is basically an incorrect return value from to_indices in StaticArrays.jl: JuliaArrays/StaticArrays.jl/blob/217e6f10a01433b8a60b679622065bc8702da923/src/indexing.jl#L213-L221 struct StaticIndexing{I} ind::I end unwrap(i::StaticI…

A sparse matrix cannot be indexed by a SVector

General Usage

Raf September 26, 2023, 3:18pm 5

From the to_indices docs:

“The returned tuple must only contain either Ints or AbstractArrays of scalar indices that are supported by array A”

StaticArrays.jl is just breaking the interface here.

Issue made here:

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A sparse matrix cannot be indexed by a SVector

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