Version 0.0-16 (04 November 2011) Fixed some minor errors in the documentation. Added a namespace. Version 0.0-15 (12 August 2011) Fixed a bug in triang.list(); occasionally triangles would appear in this list which were *not* Delaunay triangles but rather the union of three congtiguous such triangles. This now no longer happens. Fixed some minor infelicities in the Fortran (ratfor) code. Removed switch() statements from the ratfor code (and replaced them with a sequence of if's). It appears that the ratfor compiler that is currently available to me does not handle switch statements properly. The resulting Fortran code compiled and loaded but led to errors when run. ***************************** Version 0.0-14 (22 June 2011) Put the startup messages into packageStartupMessage() rather than catting them. At the request of Thierry Onkelinx. ***************************** Version 0.0-13 (29 November 2010) Renamed the directory inst/ratfor.discarded inst/code.discarded and moved the no-longer-used function ind.dup to that directory. Added a facility to plot.deldir() to plot the enclosing rectangle "rw". Added the same facility to plot.tile.list(). Added attribute "rw" to the object returned by tile.list() so that the foregoing facility can work. Added function triang.list(). Added function plot.triang.list(). Added arguments add, xlab, ylab, main, and asp to plot.tile.list(). ***************************** Version 0.0-12 (08 January 2009) Fixed a minor glitch in the .First.lib() function. I had a backspace coded into the message produced, and this upset Sweave. The backspace had been put in to get things to line up correctly. Re-arranged things (properly!) so that it is no longer needed. ***************************** Version 0.0-11 (09 December 2009) No change, really. A tweak that I made to the First() function in version 0.0-10, *without* changing the version number (psigh!) did not propagate to the Windoze and Mac OSX binaries. So version 0.0-11 is just the same as the tweaked realization of of version 0.0-10 but with the version number changed so that the tweak will propagate. ***************************** Version 0.0-10 (16 November 2009) Got rid of the call to ind.dup() used a very rough bit of Fortran code to detect duplicated points, and replaced it with a call to duplicated(). (Bug pointed out by Bjarke Christensen.) ***************************** Version 0.0-9 (4 November 2009) Added a new function tile.centroids() --- which does the obvious. Motivated by an inquiry from Leandro Moreira. Added a ChangeLog ***************************** Version 0.0-8 (4 April 2009) Removed the labels from the x and y vectors in the tile descriptions produced by tile.list. These labels (which were the row numbers in the dirsgs data frame returned by deldir()) served no useful purpose and were potentially confusing. ***************************** Versions 0.0-2 through 0.0-7 were not tracked here. :-( Simply forgot about doing this. I thouroughly *intend* [ :-) ] to get the archives from CRAN and try to document the changes. Recent ones involved fixing bugs in and adding features to the tile.list() and plot.tile.list() functions. ***************************** Version 0.0-1 (21 February 2002) This version is simply an adaptation of the Splus version of the package to R. ========================================================================================= The following items relate to the Splus versions of deldir ========================================================================================= Version date: 14 February 2002. This version supercedes the version dated 24 April 1999. The changes from the version dated 24 April 1999 to the version dated 14 February 2002 were: A bug in the procedure for eliminating duplicated points was fixed. Thanks go to Dr. Berwin Turlach of the Department of Maths and Stats at the University of Western Australia, for spotting this bug. ***************************** Version date: 24 April 1999. This version supercedes the version dated 26 October 1998. The changes from the version dated 26 October 1998 to the version dated 24 April 1999 were: (1) The function mipd(), stored in mipd.sf, and the corresponding Fortran subroutine mipd, stored in mipd.r, have been replaced by mnnd() in mnnd.sf and mnnd in mnnd.r. The function mipd calculated the mean interpoint distance, to be used in constructing dummy point structures of a certain type. After some reflection it became apparent that the mean interpoint distance was much too large for the intended purpose, and that a more appropriate value was the ``mean nearest neighbour distance'' which is calculated by the new function. This new value is now used in constructing dummy point structures. Note that the operative result is that the resulting dummy point structures contain many more points than before. The old value caused large numbers of the dummy points to fall outside the data window and therefore to be clipped. ***************************** Version date: 26 October 1998. This version supercedes the version dated 6 December 1996. The changes from the version dated 6 December 1996 to the version dated 26 October 1998 were: (1) A ratfor/Fortran routine named ``inside'' has been renamed ``dldins'' to avoid conflict with a name built in to some versions of Splus. (2) Some minor corrections have been made to dangerous infelicities in a piece of the ratfor/Fortran code. (3) The dynamic loading procedure has been changed to use dyn.load.shared so that the package is easily usable on IRIX systems as well as under SunOS/Solaris. (4) The package has been adjusted slightly so that it can easily be installed as a section of a library. In particular, the dynamic loading is now done by the .First.lib() function rather than from within deldir() itself; reference to an environment variable DYN_LOAD_LIB is no longer needed.