NEWS.md

In dirkschumacher/ompr.roi: A Solver for 'ompr' that Uses the R Optimization Infrastructure ('ROI')

ompr.roi (development version)

ompr.roi 1.0.2

• Fixes a bug in how the package documentation was specified.
• ompr.roi now requires at least R 3.5.0 because ompr requires it.

ompr.roi 1.0.1

• ompr.roi does not use a deprecated {Matrix} 1.4-2 function anymore.

ompr.roi 1.0.0

• ompr.roi is now licensed MIT.
• LazyData was removed from the DESCRIPTION file as is produced a CRAN warning.
• ROI's status and message information are now part of the returned solution and can be accessed calling additional_solver_output() on the returned value.

Breaking changes

• In line with ROI's way of encoding a general termination status, the solver_status(result) is now "success" if ROI returned code = 0, otherwise it is "error".

ompr.roi 0.8.0

Breaking changes

• The package exports column and row duals of LPs. Extracting duals might be solver dependent. Only tested with GLPK. This requires version 0.8 of ompr.
• Minimum supported R version is 3.4.0 since slam also requires >= 3.4

New features

• ompr.roi works with other ompr backends as well.
• ompr.roi always returns a solution, even if the solution status is not optimal. It extracts the ROI solution with force=TRUE.

ompr.roi 0.7.0

Major breaking changes

• The package uses the new sparse matrix interface of ompr and ROI.
• Minimum supported R version is now 3.3.0

Minor changes

• as_ROI_model exports an 'ompr' model to ROI::OP Github Issue #9

ompr.roi 0.6.1

Bugfix

• Fixed a bug where the ROI::V_bound object was incorrectly initialised. This causes an error with ROI >= 0.3.0.

ompr.roi 0.6.0

• First release on CRAN

dirkschumacher/ompr.roi documentation built on Sept. 16, 2023, 4:05 p.m.