NEWS

---

spatstat.sparse 3.1-0 (2024-06-21)

OVERVIEW

• Internal improvements.

spatstat.sparse 3.0-3 (2023-10-24)

OVERVIEW

• Minor improvements.

spatstat.sparse 3.0-2 (2023-06-25)

OVERVIEW

• We thank Joey Arthur for contributions.
• Bug fix.

BUG FIXES

• marginSumsSparse If the result of marginSumsSparse was a one-dimensional sparse vector, the entries were incorrectly rearranged so that the non-zero entries were all at the beginning of the vector. [Spotted by Joey Arthur.] Fixed.

spatstat.sparse 3.0-1 (2023-03-12)

OVERVIEW

• Minor changes to package information.

spatstat.sparse 3.0-0 (2022-10-21)

OVERVIEW

• Minor internal changes.

spatstat.sparse 2.1-1 (2022-04-18)

OVERVIEW

• Bug fix.

BUG FIXES

• matrixsqrt, matrixinvsqrt, matrixpower If the result was a complex-valued matrix, the values were completely incorrect. Fixed.

spatstat.sparse 2.1-0 (2021-12-17)

OVERVIEW

• Join two sparse arrays.
• Minor improvements and bug fixes.

NEW FUNCTIONS

• bind.sparse3Darray Join two sparse three-dimensional arrays along a specified dimension (analogously to 'rbind', 'cbind' or 'abind') to make another sparse three-dimensional array.

SIGNIFICANT USER-VISIBLE CHANGES

• quadform Argument 'v=NULL' is now accepted, and interpreted as the identity matrix.
• bilinearform Argument 'v=NULL' is now accepted, and interpreted as the identity matrix.

BUG FIXES

• quadform Crashed if 'v' was missing. Fixed.

spatstat.sparse 2.0-0 (2021-03-16)

OVERVIEW

• Package adjusted to conform to the spatstat family.
• New function 'gridadjacencymatrix'.

NEW FUNCTIONS

• gridadjacencymatrix Given the dimensions of a rectangular grid of points, create the adjacency matrix for the corresponding neighbourhood graph, whose vertices are the grid points, and whose edges are the joins between neighbouring grid points. The result is a sparse matrix.

spatstat.sparse 1.3-1

OVERVIEW

• Internal adjustments.

spatstat.sparse 1.3-0

OVERVIEW

• Some code has been transferred to spatstat.utils.

SIGNIFICANT USER-VISIBLE CHANGES

• RelevantNA, RelevantZero, RelevantEmpty, grokIndexVector These functions have been moved to the package 'spatstat.utils'.

spatstat.sparse 1.2-1 (2021-02-06)

OVERVIEW

• Internal bug fix.

spatstat.sparse 1.2-0 (2021-01-08)

OVERVIEW

• Efficiency improvement

SIGNIFICANT USER-VISIBLE CHANGES

• spatstat.sparse Code should run faster; we have reduced the overheads in executing C code.

spatstat.sparse 1.1-1

OVERVIEW

• Internal code improvements.

spatstat.sparse 1.1-0 (2020-06-04)

OVERVIEW

• Internal code improvements.

spatstat.sparse 1.0-9

OVERVIEW

• Internal code improvements.

spatstat.sparse 1.0-8

OVERVIEW

• Internal code improvements.

BUG FIXES

• sumouter Crashed if 'w' contained NA values. Fixed.

spatstat.sparse 1.0-7

OVERVIEW

• Internal code tweaks.

spatstat.sparse 1.0-6

OVERVIEW

• More documentation.

SIGNIFICANT USER-VISIBLE CHANGES

• marginSumsSparse This function is now documented.

spatstat.sparse 1.0-5

OVERVIEW

• More support for complex values

SIGNIFICANT USER-VISIBLE CHANGES

• sumouter, quadform, bilinearform These functions now handle complex-valued matrices and vectors.
• marginSumsSparse This function now handles complex-valued sparse arrays.

spatstat.sparse 1.0-4

OVERVIEW

• spatstat.sparse now 'requires' the Matrix package.

SIGNIFICANT USER-VISIBLE CHANGES

• spatstat.sparse package spatstat.sparse now 'requires' the Matrix package, so that Matrix is loaded when spatstat.sparse is loaded.

spatstat.sparse 1.0-3

OVERVIEW

• More documentation.

SIGNIFICANT USER-VISIBLE CHANGES

• "[.sparse3Darray" The subset extraction operator is now documented.
• "[<-.sparse3Darray" The subset assignment operator is now documented.
• as.array.sparse3Darray This method is now documented.
• anyNA.sparse3Darray This method is now documented.
• dim.sparse3Darray, "dim<-.sparse3Darray" These methods are now documented.
• dimnames.sparse3Darray, "dimnames<-.sparse3Darray" These methods are now documented.
• sumouter A mathematical statement in the help file has been corrected.

spatstat.sparse 1.0-2

OVERVIEW

• More documentation

SIGNIFICANT USER-VISIBLE CHANGES

• sparse3Darray This function is now documented.
• aperm.sparse3Darray This function is now documented.
• as.sparse3Darray This function is now documented.
• tensorSparse This function is now documented.
• Math.sparse3Darray, Ops.sparse3Darray, Complex.sparse3Darray, Summary.sparse3Darray The methods for the group generics are now documented.

spatstat.sparse 1.0-1

OVERVIEW

• Corrections to the internal structure.
• Bug fixes.
• More functions are documented

SIGNIFICANT USER-VISIBLE CHANGES

• sumsymouter New argument 'distinct'.

BUG FIXES

• sumsymouter Results were incorrect for sparse arrays in some cases: some contributions to the sum were omitted. Fixed.

spatstat.sparse 1.0-0

OVERVIEW

• This new package has been created from code removed from the spatstat package.