Xmgr list of changes

From 3.01 to 4.00alpha:

 * added a new demo, cd to examples and run:
   xmgr -arrange 2 2 -b test.com

 * No limit on the number of columns of block data. See the -maxblock option.

 * Added formats YYMMDD and YYMMDDHMS For tick labeling.

 * Colors can be changed on the fly.

 * Tick marks and grid lines are now set separately.

 * Added as274 for performing the least squares fits for
   polynomials, seems to be fairly robust, the default is
   the original - form the normal equations and use gauss 
   elimination.

 * Allow logging of strings passed to the scanner, should help in
   debugging batch files.

 * Tick marks and gridlines are now drawn separately - you can have ticks
   OUT while having gridlines.

 * Edit points has been rearranged, the popup for the location and the 
  buttons for actions are now in the same popup.

 * Added a command (LENGTH) that can be used to either truncate or lengthen a set.

 * Added commands to kill sets, but save the parameter settings 
  (KILL <SETNUM> SAVEALL)

 * Added ARRANGE command, this does not allow the control over
  the layout that the popup does, but should be useful.

Paul J Turner (pturner@teleport.com)


From 4.00alpha to now:

(See below for legend)

Patch level 0

 *  [ES] fixed problems with XBAE cell editing
 *  [ES] fix to make multiple selection and "Select all" work in 
         `Data/Transformation/Geometric'
 *  [ES] in the `Geometric' transformation, direction of X & Y translations was
         wrong
 *  [ES] F* keys work for Linux
 *  [ES] no segfaults in 16 bpp mode
 *  [PN] pen patterns for framemaker (mif) works correctly
 *  [EV] computation of bounding box for eps
 *  [EV] use of left and right arrow keys in text edit mode
 *  [EV] editing of sets with text editor (Edit/Create Set) when XBAE not 
         present
 *  [EV] implementation of backspace for Postscript
 *  [EV] cursor must be close to picked objects, eliminates "must kill" mode
 *  [EV] implementation of annotative ellipses
 *  [EV] improved editing of objects
 *  [EV] proper moving of filled objects
 *  [EV] postscript now fills with patterns
 *  [PN] when editing text, the following keys are available:
         ^a - go to beginning
         ^e - go to end
         ^k - delete to end
         ^u - delete to start
 *  [ES] fix for the power regression (y = a*x^b)
 *  [ES] when compiled with XBAE, creating a new set is possible (with
         $GR_EDITOR, or vi as a default)
 *  [ES] `examples' directory cleaning
 *  [ES] extracting OS-specific or otherwise configurable parameters from 
         Makefile into Make.arch and Make.conf respectively
 *  [EV] text string editing
 *  [EV] code to distinguish between postscript level 1 and 2 printers and 
         alter pattern fill accordingly
 *  [EV] fix for bounding box for eps files that was sometimes computed
         incorrectly
 *  [ES] some minor code & documentation fixes and rearrangements
 *  [ES] adding a primitive `configure' script

Patch level 1

 *  [ES] code fixes and rearrangements (still far from being complete)
 *  [ES] building a non-GUI version works out of the box now
 *  [ES] new functions added to the parser: hyperbolic (sinh, cosh, tanh) and
         inverse hyperbolic (asinh, acosh, atanh). This was suggested by Jens
         Schneider <jschneid@gluon.physik.uni-kl.de>
 *  [ES] tick marks & labels didn't show up in the zero X/Y axes if the axes
         didn't contain 0. (pointed out by James J. Szydlik 
         <szydlik@cgrer.uiowa.edu>). Fixed

Patch level 2

 *  [ES] on-line & context-sensitive help facility added, but it is enabled
         only for a small part of widgets
 *  [ES] GR_HELPVIEWER is now in the printf(3) format, with %s being replaced by
         a help URL anchor. The default GR_HELPVIEWER string is now
         "netscape -raise -remote openURL(%s) >/dev/null 2>&1 || netscape %s".
         This will try to connect to an already running netscape, and if fails,
         silently run a new one
 *  [ES] added support for libhelp (tested with ver. 1.8.1) - a light-weight
         hypertext help system of Thomas Harrer. If this is enabled, GR_HELPVIEWER
         will be ignored. See Make.conf for more details
 *  [ES] documentation a bit updated
 *  [ES] in the print setup, option to disable PS Level 2 features. Should
         eliminate problems some people encountered with old printers
 *  [EV] Xbae cell editing fixes
 *  [EV] added interpolation: create a new set by performing interpolation on
         one set at abscissas from another set. Can be done by linear, cubic
         spline or Akima spline (see below) approximation
 *  [EV] in "Edit/Create set", option to define new set by a formula
 *  [ES] fixes for custom positioning of axis labels: both dx and dy work and
         are updated under axis flip/invert correctly
 *  [ES] menus rearranged
 *  [ES] Akima splines added. Nice when approximating an essentially non-smooth
         sequence. The code is taken from David Frey's Spline-1.0 package and 
         modified to suite xmgr
 *  [EV] option to strip absolute path from legend strings when data is read
         from a file
 *  [EV] if reading data from file a, the first column of data is commented a:1 
         and the next a:2, etc 
 *  [EV] when printing to a file, default filename is the project name +
         type-specific extension; file selection widget added
 *  [ES] new functions in parser: 
         interpolation: INTERP (SET1, SET2, method), where the method
            could be either 0 (linear), 1 (cubic spline) or 2 (Akima spline)
         Akima spline: ASPLINE(SET, START, STOP, NPOINTS)
 *  [EV] fix for string edit popup - the rotation angle was not updated
 *  [EV] fix for the U umlaut - \c\\ should work as expected
 
 
 Legend:
    [EV] - Ed Vigmond <ed@gut.rose.utoronto.ca>
    [PN] - Per Nordlund <pern@hallf.kth.se>
    [ES] - Evgeny Stambulchik <fnevgeny@plasma-gate.weizmann.ac.il>