SparseArray

SparseArray(nestedList)

create a sparse array from a nestedList structure.

SparseArray(arrayRules, listOfIntegers, defaultValue)

create a sparse array from arrayRules with dimension listOfIntegers and undefined elements are having defaultValue.

SparseArray(Automatic, listOfIntegers, defaultValue, crsList)

create a sparse array from the compressed-row-storage crsList with dimension listOfIntegers and undefined elements are having defaultValue.

See

• Netlib - Compressed Row Storage (CRS)

Examples

>> SparseArray({{1, 1} -> 1, {2, 2} -> 2, {3, 3} -> 3, {1, 3} -> 4})
SparseArray(Number of elements: 4 Dimensions: {3,3} Default value: 0)

>> SparseArray({{1, 1} -> 1, {2, 2} -> 2, {3, 3} -> 3, {1, 3} -> 4}, Automatic, 0)
SparseArray(Number of elements: 4 Dimensions: {3,3} Default value: 0)

Related terms

SparseArrayQ, MatrixForm, Normal

Implementation status

• ✅ - full supported

Github

• Implementation of SparseArray