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SparseArray—Wolfram Language Documentation

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• See Also
  • SparseArray
  • FunctionCompile
  • Compiled Types
  • PackedArray
  • NumericArray
• Related Guides
  • Compiled Types
  • Code Compilation

"SparseArray"::[type,rank]

represents a sparse array composite type with elements of specified type and rank.

• "SparseArray" can be used in Typed and related constructs to specify a type.
• "SparseArray" objects are automatically memory managed.

• With "SparseArray"::[type, rank], unspecified values are always taken to be zero and rank can only be 1 or 2.

From Expressions
• SparseArray expressions can be converted into compiled code elements with types created with "SparseArray".
To Expressions
• Compiled code elements with types created with "SparseArray" can be converted into SparseArray expressions.

SparseArray properties may be used within CompiledCodeFunction:

This is equivalent to the "Density" property:

The function uses real arithmetic so that it works even when the total number of elements is too large for a machine-sized integer:

Compute a power series of a sparse matrix:

This is equivalent to computing the square of a matrix:

Generate coefficients of the exponential function and use them to compute a matrix exponential:

The MatrixExp function is a better way to compute the exponential, but the power series result was close:

Introduced in 2021 (13.0)

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