      IMPROVEMENTS AND BUG FIXES IN MVSP SINCE VERSION 2.1 

20 June 1993 
    Fixed bug reported by Antonio Lo Porto.  BITMAP3.BGI file 
      wasn't being recognised.  
    Released as version 2.1a. 

28 June 1993 
    Fixed bug reported by Bernard Kat.  Protected mode version 
      wouldn't detect VESA SuperVGA boards; it tried to use 
      regular VGA instead. Detection ok under real mode versions. 
    Released as version 2.1b 

15 July 1993 
    Fixed bug reported by Jim Smith.  Error message "Graphics 
      file name must be different from results file name" was 
      given if same data file was clustered more than once in one 
      session without printing the dendrogram. 
    Also changed install so it would only install either MVSP.EXE 
      or MVSP87.EXE, not both. 
    Released as version 2.1c 

17 Sept. 1993
    Bryan Manly reported problems importing HPGL files to 
      WordPerfect.  Fixed with new version of HP74753.BGI driver.  
      Also fixed problem in which the HPGL Select Pen (SP) 
      command often was greater than allowed values (up to 15) or 
      0; now always uses pen 1. Added three new fonts for 
      dendrograms & scatterplots and an option to choose which to 
      use 
    Modified graphics detect logic so that if the SuperVGA 
      driver file VESA16.BGI is not found then program can use 
      standard VGA (in the file EGAVGA.BGI).  If a user has 
      problems with compatibility with SuperVGA cards, then 
      simply deleting the VESA16.BGI file will make the program 
      use standard VGA.
    Also fixed several problems discovered by myself:
    Fixed bugs in CEP file import.  If CEP file not in strict CEP 
      format (with number of rows & columns in first line), rows & 
      columns variables left set at zero.  Also, labels were not 
      being read properly. 
    Disallowed logratio transformation in correspondence analysis.  
      This sometimes caused errors, and logratio not needed 
      anyway because CA scales data so that rows & columns sum 
      to one. 
    Eigenvalues weren't being saved to WKS file when reciprocal 
      averaging method used; fixed.
    Released as version 2.1d

25 Oct. 1993
    Fixed two bugs reported by Jim Smith:
    If integer data greater than 32767 exported to WKS files, the 
      numbers come out wrong or negative, due to integer wrap.  
      Large integer values now output as floating point numbers.
    PCX bitmap files were being produced as completely black 
      squares, sometimes with small dot in middle.  Fixed.
    Released as version 2.1e

9 Nov. 1993
    Bug reported by James G. Honey - General Protection Fault in
      protected mode version.  Occurred when importing  Lotus 
      files and an unrecognized cell type encountered.  Fixed.
    Added a new coefficient, Nei & Li's genetic distance (NLc = 
      2a/(n1 + n2) where a = number of joint presences of 
      variables (or shared electrophoretic bands) in the two 
      samples being compared, n1 and n2 = total number of 
      presences (bands) in each sample.) 
    Released as version 2.1f

7 Dec. 1993
    Ivo Wiesner reported further problems with PCX file 
      production.  Now fixed.
    Released as version 2.1g

31 Jan 1994 
    Rudolf Pavuza reported slight problem with screen output of 
      text dendrograms. Fixed.
    Ken Brown reported several problems when data files are kept 
      on a floppy but work drive is the hard disk.  Some 
      temporary files were being stored on floppy disk, causing 
      problems.
    Added scale to dendrogram.
    Made background of PCX bitmap files white if the screen background 
      color is lightgray; better for importing to DTP.
    Released as version 2.1h

10 Feb 1994
    Roberto Olmi reported errors in Gower similarity when using 
      MVSP87; worked o.k. with non-80x87 versions.  Fixed.
    Released as version 2.1i

7 Oct 1994
    Fixed two errors in clustering reported by Michael Judas:  
      scale on dendrograms wrong when percent similarity used and 
      nearest and farthest neighbor clustering were reversed when 
      similarities used.  Also fixed problem with size of scale 
      labeling when printed.
    Fixed further problems with importing Lotus files (reported by 
      Ken Ursic) that sometimes caused general protection faults 
      in protected mode version and sometimes inserted missing 
      value markers when a cell is apparantly blank (in which 
      case the value should be treated as zero).
    Released as version 2.1j

29 Nov 1994
    Fixed problem with Lotus file import reported by Phil Highton 
      and John Gurnell; some programs that create Lotus files 
      store zeros in such a way that they are not converted 
      properly in MVSP (they become 2 instead).  Only occurs with 
      non-80x87 version of MVSP.  
    Also made error checking of Lotus and CEP import more robust.
    Released as version 2.1k

24 Mar 1995
    Problem with DCA reported by Shahroukh Mistry & Richard 
      Jensen.  Some data sets gave division by zero or invalid 
      floating point operation errors when calculating axes.  
      This occurs when some of the intermediate results are so 
      small that the axis cannot be extracted.  Program was 
      modified to print warnings on this condition. 
    Released as version 2.1l

18 July 1995
    MVSP was modified to work in batch mode.  This enables MVSP 
      to be interfaced with the general purpose shareware 
      statistical program SIMSTAT.  A special interface program, 
      called SIM2MVSP, provides an add-in menu for SIMSTAT 
      allowing MVSP analyses to be performed on SIMSTAT data 
      files.  See the file READ.ME file in the SIM2MVSP.ZIP 
      archive for more information.
    Added support for more printers (HPLJ 600dpi, HP color Deskjet, HP 
      Thinkjet.
    Released as version 2.2

25 Sep 1995
    Fixed two bugs: Invalid floating point and arithmetic 
      overflow errors reported by Matthew Wakefield when 
      calculating logratio transformations on large data sets 
      with very high proportion of zeros.  Also, Brad Thompson 
      reported "Bigarray errors - insufficient paragraphs 
      allocated" when doing PCA with only 442Kb RAM available at 
      DOS prompt.  
    Released as version 2.2a

12 Jan 1996
    File Not Open error on startup in MVSPPROT reported by Bernard 
      Kat.  Fixed.
    Problem reported by G.R. Thompson.  When MVSP run from within 
      SIMSTAT there is no way to specify where the temporary work 
      files will be stored; they are stored on the current drive by 
      default.  Added a MVSPTEMP environmental variable that can be 
      set at DOS that overrides the working drive specification in the 
      .CNF file.
    Released as version 2.2b

8 May 1996
    Added check in clustering so constrained and randomize can't be in 
      force at the same time.  A check existed in the menu system, but 
      it was possible to choose both options from SIMSTAT.
    Changed graphics initialization routine so that the BGI 
      graphics files can reliably be found when run from SIMSTAT for 
      Windows.
    Modified and standardised many system messages.
    Released as version 2.2c

6 June 1996
    Fixed problem with CEP export where files were wider than 80 
      columns.  Most programs handle this o.k., but Canoco environment 
      data are truncated at 80 columns (species data o.k.).
    Released as version 2.2d

14 Oct 1996
    Modified program so that, when it's run under Simstat for Windows, 
      it looks for the MVSP.CNF file created by standalone MVSP to 
      find printer information.  If not found the printer setup menu 
      will be shown.
    Released as version 2.2e

14 March 1997
    Fixed bug reported by Matthew Wills.  Arithmetic overflow was 
      occuring in PCO of large data matrices, giving unusual results.
    Released as version 2.2f

15 April 1997
    Fixed bug reported by several people; printing graphs gave "File 
      Not Open" error after BGIPRT drivers loaded.  
    Released as version 2.2g

29 April 1997
    Fixed bug reported by Scott O'Keefe; only occured when running 
      under Simstat.  Clustering of percent similarity coefficients 
      produced dendrograms on screen that were scaled wrong. All other 
      coefficients worked OK.
    Released as version 2.2h

15 August 1997
    Problem reported by N.J. Holliday; if MVSP run from network drive 
      that is set to read-only various problems occur with 
      loading graphics drivers and producing printouts. BGI 
      (graphics driver) files must be in a read-write directory.
      Modified program to detect if main program directory is 
      read-only. If so, then it will look for BGI files in the 
      root directory of the work file drive (designated through 
      the "Data File And Work File Path" option).
    Also fixed bug where program crashed when it tried to save CNF file when 
      it was read-only (or on a read-only network share). 
    Released as version 2.2i

27 May 1998
    Fixed problem where MVSP would not start on fast computers 
      (i.e. those with Pentium Pro or later running at 200Mhz or
      greater).
    Released as version 2.2j
