https://github.com/cran/TSP
Tip revision: 18ba67e67fb8e04837ff4da7f0cdb03df5608dbd authored by Michael Hahsler on 21 February 2022, 20:10:02 UTC
version 1.2-0
version 1.2-0
Tip revision: 18ba67e
NEWS.md
# TSP 1.2-0 (02/21/2022)
## Changes
* The package uses now roxygen.
* C code has now long vector support for dist.
# TSP 1.1-11 (10/06/2021)
## Bugfixes
* cut_tour: fixed dropped city for multiple cut points (reported by RegularnaMatrica)
# TSP 1.1-10 (04/17/2020)
## Bugfixes
* Fixed Linkern file management on Windows.
* Converting distances that only contain 0 and Inf (e.g., from an adjacency matrix)
is now fixed for Concorde and Linkern.
* Reduced the maximum integer for Concorde to avoid overflows (reported by sarwanpasha).
# TSP 1.1-9 (02/02/2020)
* Maintenance release.
# TSP 1.1-8 (01/23/2020)
## New Feature
* solve_TSP for ATSP gained parameter as_TSP to solve the ATSP reformulated as a TSP.
* Concorde and linkern can now solve ATSP using a reformulation as a TSP.
* cut_tour can now cut a tour into multiple paths.
# TSP 1.1-7 (05/22/2019)
## Bugfixes
* concorde_path now normalizes the path (translates . and ~).
* reformulate_ATSP_as_TSP now keeps the method attribute (i.e., used distance measure)
* TSP and ATSP gained parameter method to store the name of the used distance metric.
* Fixed read_TSPLIB for EDGE_WEIGHT_FORMAT of LOWER_ROW, LOWER_DIAG_ROW, UPPER_COL and UPPER_DIAG_COL
(reported by klukac).
# TSP 1.1-6 (04/29/2018)
## Bugfixes
* Start for insertion algorithms is now coerced to integer.
* Fixed problem with TSP with 1 city on Win 32 on R 3.5.0.
# TSP 1.1-5 (02/21/2017)
* fixed TSP labels.
* fixed tour_length for ETSP and added tests.
# TSP 1.1-4 (2/21/2016)
* fixed bug in arbitrary insertion for TSPs with two or less cities
(bug report by Shrinidhee Shevade).
* concorde and linkern help: exe argument was removed. The exe control
argument for both methods in solve_TSP is now deprecated.
Use concorde_path(path) instead.
* concorde and linkern gained a control argument verbose to
suppress the output.
# TSP 1.1-3 (9/2/2015)
* two-opt now works correctly with asymmetric TSPs
(bug report by Luis Martinez).
# TSP 1.1-2 (7/30/2015)
* Fixed imports for non-base packages.
# TSP 1.1-1 (5/15/2015)
* improved speed of C code.
* compatibility with new release of testthat
# TSP 1.1-0 (3/14/2015)
* default method is now arbitrary_insertion with two_opt refinement.
* we use foreach (use doParallel) to compute repetitions in parallel
* ETSP (Euclidean TSP) added.
* generic and arguments for tour_length have # Changed
(fist argument is now a tour).
* method "2-opt" was renamed to "two_opt" so it can also be used as a
proper variable name.
* solve_TSP gained methods "identity" and "random".
* solve_TSP gained options "repetition" and "two_opt".
# TSP 1.0-10 (2/3/2015)
* added check for argument cut in cut_tour
* Finding concord and linkern is now case
insensitive (Reported by Mark Otto)
# TSP 1.0-9 (7/16/2014)
* Check for NAs in distances.
* +INF and -INF are now handled in solve_TSP.
* fixed single quotes in vignette.
# TSP 1.0-8 (9/6/2013)
* service release.
# TSP 1.0-7 (8/22/2012)
* Added PACKAGE argument to C calls.
# TSP 1.0-6 (11/29/2011)
* Fixed bug in read_TSPLIB.
# TSP 1.0-5 (11/10/2011)
* Changed constructor for TOUR to allow for method and tour_length.
* Bugfix: labels in creator ATSP() (reported by Tiffany Chen)
# TSP 1.0-4 (8/31/2011)
* Fixed bug with missing row/column labels in as.ATSP()
(reported by Ian Deters)
# TSP 1.0-3 (5/26/2011)
* Service release
# TSP 1.0-2 (1/14/2011)
* Fixed Windows/R bug with temp files.
* Fixed the code for SpatialLines thanks to Roger Bivand.
# TSP 0.1-2 (9/18/2006)
* Initial release.