v1.33.0

LazySets v1.33.0

Diff since v1.32.1

Announcements

Contributors for this release:

• Marcelo Forets (@mforets)
• Christian Schilling (@schillic)

Breaking changes

• Add type parameters for LineSegment endpoints (#2073)

Features

• Add Delaunay triangulation through MiniQhull / Qhull as an optional dependency (#2075)

v1.32.1

LazySets v1.32.1

Diff since v1.32.0

Announcements

Contributors for this release:

• Marcelo Forets (@mforets)
• Christian Schilling (@schillic)

Features

• Added new functions surface and area (#2062)

Internal changes

• Added a function to convert the normal vector of a half-space (#2067)

v1.32.0

LazySets v1.32.0

Diff since v1.31.0

Announcements

Contributors for this release:

• Marcelo Forets (@mforets)
• Sebastian Guadalupe (@SebastianGuadalupe)
• Christian Schilling (@schillic)

Breaking changes

• Add type parameters for the center and generator matrix of a zonotope (#2029)
• Add type parameter for linear constraints in sets represented by constraints (#2044)

Enhancements

• More efficient hyperrectangular overapproximation of the lazy affine map of a hyperrectangular set (#2049)

Internal changes

• Add corresponding matrix type and vector type functions (#2039)
• Minor docstring fixes (#2053)

v1.31.0

Announcements

Contributors for this release:

• Marcelo Forets (@mforets)
• Christian Schilling (@schillic)

Breaking changes

• Remove constructors with type parameters (#1946); example:

julia> L = rand(Line)
Line{Float64,Array{Float64,1}}([-0.2136845071974417, 0.5915837264964181], -1.3883907003470708)

julia> Line{Float64,Array{Float64,1}}(L.a, L.b)  # not possible anymore

julia> Line(L.a, L.b)  # omit the type parameters instead

• The concrete Minkowski sum for intervals now returns an interval (#2026).

• Make + operator lazy for intervals (#2038)

Features

• New lazy Projection constructor (#1967)
• New VPolytope constructor from the columns of a matrix (#2005)
• Add check_posdef for checking positive definiteness an optional flag in the Ellipsoid constructor (#2007)
• Add a new flag check_bounds to the Hyperrectangle constructor, to switch off/on the check that the radius is positive (#2018)

Enhancements

• More efficient genmat_fallback implementation (#1981)
• More efficient symmetric interval hull for intervals (#2021)
• Add a vector parameter for the center of a ball in the 2-norm, Ball2 (#2024)
• Faster concrete minkowski sum for intervals (#2026)
• Add getter function for the shape matrix of an ellipsoid (#2016)
• Add type parameter to Ellipsoid (#2031)
• Add type parameter to BallInf (#2034)
• Faster concrete symmetric interval hull for hyperrectangles (#2030)

v1.30.0

LazySets v1.30.0

Diff since v1.29.0

Announcements

Contributors for this release:

• Marcelo Forets (@mforets)
• Christian Schilling (@schillic)

Breaking changes

• Rename get_A(::ResetMap) and get_b(::ResetMap) to matrix and vector (#1965)

Features

• Add togrep methods for AbstractZonotopes (#1884)
• Add AbstractAffineMap interface (#1965)
• Add VPolygon constructor from matrix columns (#1966)

Enhancements

• Efficient way to obtain precise Interval bounds in 1D (#1976)
• Update docstrings:
  • Examples in half-space docstring (#1992)
  • Cross references (#1993)
• Use faster version of directions comparison in 2D (#1986)

v1.29.0

LazySets v1.29.0

Diff since v1.28.0

Announcements

Contributors for this release:

• Marcelo Forets (@mforets)
• Marten Lienen (@cqql)
• Christian Schilling (@schillic)

Breaking changes

• The default algorithms in the concrete linear_map function for polyhedral sets have been revised and updated, and also their keyword names; the available options are "inverse" (or "inv"), "inverse_right" (or "inv_right"), "elimination" (or "elim"), "lift" and "vrep" see the documentation of linear_map for algorithmic details
  (#1950)

Features

• Concrete projection for unbounded sets (#1959)
• Concrete linear map using variable elimination (#1935)

Enhancements

• Support RecipesBase v0.8 (#1972)
• Bump bounds on dependencies (#1974)

Internal changes

• Minor type-annotation changes in functions (#1971)
• Simplify usage of all/any for simple unary predicates (#1980)

v1.28.0

LazySets v1.28.0

Diff since v1.27.0

Announcements

Contributors for this release:

• Marcelo Forets (@mforets)
• Christian Schilling (@schillic)

Breaking changes

• Add a dimension to EmptySet (#1896)

Features

• Array function to extend a matrix by its orthogonal complement (#1938)
• New algorithm "lift" for the concrete linear map of a polytopic set in half-space representation, and non-invertible (rectangular) matrix M with size(M, 1) > size(M, 2) (#1939)
• basetype function (#1947)
• Concrete decomposition using linear_map (#1956)

Enhancements

• Extend concrete projection to arbitrary HalfSpaces (#1957)
• Extend projection to polyhedral sets (#1957)
• Pass constructor argument, remove_redundant_generators, in the concrete minkowski sum of
  zonotopes (#1962).

Internal changes

• Refactor boundness check for HPolygon, making isbounded(::HPolygon, false) more efficient (#1931)

v1.27.0

Announcements

Contributors for this release:

• Marcelo Forets (@mforets)
• Christian Schilling (@schillic)
• Ueli Wechsler (@ueliwechsler)

Features

• Concrete scale of interval (#1906)
• Plot recipe for unbounded sets (#1910)
• Plot recipe for UnionSet and UnionSetArray (#1918)

Enhancements

• Faster constraints list for interval (#1908)
• Faster concrete linear map for interval (#1907)
• Fix typo in error message (#1919)
• Generalize conversion and overapproximation for lazy linear maps of zonotopic sets (#1920)

v1.26.0

Announcements

Contributors for this release:

• Marcelo Forets (@mforets)
• Christian Schilling (@schillic)

Breaking changes

• Rename CacheMinkowskiSum to CachedMinkowskiSumArray (#1891)

Enhancements

• Add conversion from M-sum of M-sum array to M-sum array (#1893)
• Add a parameter in iterative refinement structs (LocalApproximation, PolygonalApproximation) (#1892)

Internal changes

• Revision of Ball1 (#1894)
• Remove output-type annotations (#1897)

v1.25.0

Announcements

Contributors for this release:

• Daniel Freire (@dfcaporale)
• Marcelo Forets (@mforets)
• Christian Schilling (@schillic)

Features

• Added the function isconvextype to check if a given set type is guaranteed to be convex (#1834)
• Special cases for isconvextype of the set complement (#1847)
• Add element type function (eltype) for any set type (#1863)

Enhancements

• Faster support vector for hyperrectangular sets if the direction is a single entry vector (#1850)
• Fallback implementation of overapproximate with an HPolytope, and better error messages (#1854)
• Methods for lazy convex hull array of singletons (#1852)
• Update documentation of iterative refinement overapproximation (#1861)
• Efficient convert methods for identity (#1864)
• Improved docs for an_element of a LazySet (#1869)
• Add an_element function for Polyhedron (#1868)
• Use SingleEntryVector in an_element function (#1888)

Bug-fixes

• Various fixes in isconvextype (#1860)
• Fixed vertices_list of Zonotope without generators (#1882)

Internal changes

• Move CartesianProductArray, ConvexHullArray, MinkowskiSumArray, UnionSetArray and IntersectionArray to their own files (#1865, #1883, #1890)
• Move reflect() to LazySet.jl (#1873)
• Upgrade to using Julia v1.3 in docs builds (#1877)