This repository contains the current development version of the
spatstat.sparse package.
For the most recent official release of spatstat.sparse,
see the CRAN page.
The spatstat.sparse package
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defines a class of sparse three-dimensional arrays and supports standard operations on them.
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provides utility functions for matrix computations that are common in statistics, such as quadratic forms.
It supports
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creation of sparse arrays from raw data (numeric, integer, logical, or complex values)
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conversion to/from other data types
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array indexing, extraction of entries, assignment of new values
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arithmetic and logical operations
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tensor operations (generalising matrix multiplication)
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permutation of array dimensions
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binding of several arrays into a single array
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printing of sparse arrays.
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linear algebra operations including calculation of quadratic forms, bilinear forms, fractional powers of a matrix.