CVS Version

4.1.2

• GLE fails to read certain JPG files (bitmap command).
• Colormap command does not work for non-square .z files.
• Bug "rotate + tex = misplacement of text" (#1881020).
• Patch to make GLE compile with gcc 4.3 (include limits.h) (by Terje Røsten).
• QGLE's export fails if path contains a space or '.' character.

4.1.1

• Smooth option of "dn line" fixed for log-scale graphs (Bug #1860761).
• Patches to make GLE compile with gcc 4.3 (by Michal Vyskocil).
• Patches to make GLE work on 64 bit machines with "lib64" dir (by Michal Vyskocil).
• Fix for GhostScript problem in QGLE on 64 bit machines.

4.1.0

New Features

QGLE edits GLE scripts		Auto scale + Auto key/labels		Curved arrow heads		Begin/end object blocks

Detailed Changes

• Added man page (now "man gle" should work on Linux).
• Added option "-verbosity" to set the amount of console output produced by GLE.
• Grid is now by default under the bars (use "grid ontop" to get the old behavior).
• Added "boxcolor" command to key block to set the color of the box indicating the fill.
• Added "append" and "prepend" commands to format$ strings.
• Added command "abound x y" to update the current bounding box.
• Added "scale auto" "hscale auto" "vscale auto" to fit the graph to the page size.
• Added auto-key based on header in data set.
• Added auto-xnames based on names in first data set column.
• Added "let d2 = hist d1 from 0 to 10 bins 10" for computing histograms (step 1 can be used instead of bins).
• Added "bar" option to "dn line" command for drawing histograms.
• Data sets can now be just one column. If "nox" is given, the x-values are set to 1...N.
• Added "compatibility" command (e.g., compatibility "3.5").
• Added compatibility range option to include command.
• Added support for standard SVG/X11 color names (by color, alphabetical).
• Added HTML notation for color names (e.g., #FF0000 = red).
• Added "defcolor name color".
• Added "set fill xxx" and "set pattern xxx".
• Made "include filename.gle" itempotent.
• Added "declare sub name args", to allow forward declarations of subroutines.
• Added "default" to set default values for subroutine arguments.
• Output of LaTeX is now hidden, only errors are shown if they occur.
• Option "dticks" now works for log scales + improved log autoscaling.
• Improved Windows installer: added bitmaps and license screen (by Vincent P LaBella).
• Added "mdist d" option to "dn marker" to draw a marker every d cm along the given curve.
• Added "deresolve n" option to "dn line" to subsample the points before drawing (by Laurence Abbott).
• Added option "average" to "dereslove" to average the points instead of just skipping them.
• Added functions dataxvalue(di,i), datayvalue(di,i), ndata(di) (by Laurence Abbott).
• Added options "xmin" "xmax" "ymin" "ymax" to fitting routines of "let" command.
• Added "-safemode" command line option that prevents GLE scripts from accessing the file system.
• Added "-allowread" and "-allowwrite" to allow I/O in given paths if "-safemode" is given.
• Added "comment" option to "data" in graph block (by Vincent P LaBella).
  Example: "data filename.dat d1=c1,c2 comment //" will make GLE ignore lines starting with "//" in the data file.
• Better formatting of error messages if script contains long lines.
• Added support for curved arrows on arcs, elliptical arcs, and bezier curves (experimental).
• Added "palette" option to colormap command.
• Added fitting of arbitrary functions (based on fitls code from GLE 3.x).
  Example: "let d2 = fit d1 with a*sin(b*x)+c*x^2+d".
  Example: "let d2 = fit d1 with a*sin(b*x)+c*x^2+d eqstr e$ rsq r".
  These two examples fit dataset d1 with a function of the form "a*sin(b*x)+c*x^2+d" and put this function in d2. The second example in addition stores the resulting equation as a string in variable "e$" and the correlaction coefficient in "r". The complete example can be found here.

4.0.12

• Includes a GUI called QGLE (written by A. S. Budden)
  - displays the output of GLE and updates automatically after the source file is modified (run "gle -p myfile.gle")
  - has basic editing tools (add amove/line/circle/...)
  - QGLE is based on the QT and Ghostscript library
• Added GNU autoconf support (in addition to the regular makefile.os system)
  (on Linux, one can now compile with ./configure; make; make install)
  
• Added autopackage support
• UTF8 support (limited to latin characters with accents)
• LaTeX expressions are scaled to the current font height
  (set texscale none/fixed/scale)
• LaTeX expressions are used in key and graph blocks (set texlabels 1)
• The "begin box / end box" block now fills underneath its contents
• Added keyword "local" to define local variables
  (see e.g., Examples | Fractals | Sierpinski on the website)
• Added "colormap" command (regular and graph block)
  (see e.g., Examples | 3D plots | Information Gain on the website)
• Colormap works for functions and for .z files
• Added option "-v" to run another version of GLE
  (if more than one version is installed, use "gle -help v" to list installed versions)
• Added "begin object name" and "end object" to define objects
• Added "draw name.pos" to draw objects
• More sensible defaults for graph font sizes
  (use gle -cmode 3.0 to get the old defaults)
• Font size in graph now depends on the "hei" setting
• Added new set subcommands: titlescale, atitlescale, ticksscale, atitledist, alabeldist
  (to set font sizes and distances relative to the value of the "hei" setting)
• Distance between axis labels and title are better calculated
• Added "margins", "dist", "coldist" and "row" options to key block
• Added "scale h v" command to graph block, which is equivalent to a hscale/vscale pair
• Added colored fill patterns for the "bar" command and key block

  bar d1,d2,d3,d4 fill blue,red,blue,purple pattern none,shade,grid,shade2
  

• Added "xnames from di" to retrieve the axis labels from a data set
• Added "xnoticks p1 p2 ..." to disable ticks at specified positions
• Added "ftick x0" to "axis" to manually set the position of the first tick
• Added "offset y0" to "axis" to move the origin of the axis
• Added "angle a" to "axis" to rotate the axis labels
• Added "x0axis" and "y0axis" (these are disabled by default)
• Added option "center" to center a graph block
• Added option "math" to create a "math mode" graph with the axis crossing at the origin
  (see e.g., Examples | 2D Simple | Sin on the website)
• Added option "horiz" to bar command allowing "horizontal" bar plots
• Added option "style" to bar command allowing user defined bar styles
  (see e.g., Examples | 2D Complex | Color Bar on the website)
• Added arrow styles "filled", "empty" and "simple"
• Added support for user defined arrow styles
  (see e.g., Examples | Other | Arrow Styles on the website)
• Added function xbar(xp,i) retrieving the x-coordinate of bar i in a bar plot
• Added function xy2angle(dx,dy) that computes the angle (polar coords) given dx and dy
• Added function sdiv(x,y) implementing y == 0.0 ? 0.0 : x / y
• Added formatting modes "pi" and "frac" to format$
  (see e.g., Examples | 2D Simple | Sin on the website)
• Subroutine definitions and assignments can come before the size command
• Checks for correct nesting of all block commands
• While loops are now also supported (besides until ... next loops)
• Support for single line then/else blocks allowing code such as

  if a < 1 then print a "is smaller than 1"
  else if a < 2 then print a "is smaller than 2 but larger than 1"
  else if a < 3 then print a "is smaller than 3 but larger than 2"
  else print a "is larger than 3"
  

• LaTeX expressions can now also be used in combination with .ps output
• Axis scales are now computed based on the datasets that are actually used
• Graph block can include function calls, of which the output is clipped to the graph window
  (see e.g., Examples | 2D Complex | Labeled Scatter on the website)
• The manip utility has been integrated back into the GLE distribution
  (see e.g., this screenshot of manip).

4.0.11

• Adds the contour utility for generating contour plots.
• Adds the fitz utility for generating 3d plots based on given data.
• Adds support for command line arguments using nargs() arg(i) and arg$(i).
• Adds the command line option -o to specify the name of the output file.
• Fixes a bug with accents (\^, \i, and \j are supported now).
• The \tex{} escape sequence can now also be used in tables.
• From and to specifications are now optional for let command.

4.0.10

• Adds landscape support to the full page mode (orientation landscape).
• Improves the Windows installer (it now shows the readme, etc.).
• Fixes a bug in the parsing of some floating point numbers (e.g., 1.e5).
• Fixes a bug in user defined markers.

4.0.9

• Parser has been significantly improved and gives more informative error messages.
  

  >> test.gle (22) |x = 64; y = log2(x)|
  >>                            ^
  >> Error: call to undefined function 'log2'
  

• TeX expressions are now included in output by default, use -inc for the "inc way".
• Added option -fullpage.
• Added pagesize and margins commands and corresponding config section.
• Added function eval(expr$) that evaluates expr$ and returns the result.
• Added option "curve angle1 angle2 d1 d2" to commands rline, aline and join.
• Fixed grid in log plots.
• Added escape sequence \expr{some_exp} that can be used in block commands and inserts the result of evaluating some_exp.
• EOF is stripped from .eps if included with postscript command.
• Special variables xgmin, xgmax, ygmin, ygmax, xg2min, xg2max, yg2min, yg2max that indicate the graph axis bounds.
• Fixed bug in return value of user defined functions.
• Fixed bug in loading of certain .tiff files that include alpha data (EXTRASAMPLE_UNASSALPHA).
• Angstrom symbol \AA added.
• Rewrote fopen/fread/fclose code based on new tokenizer.
• Added "fgetline chan line$" to read an entire line from a line.
• Added "ftokenizer chan commentchar spacetokens singletokens" to set up the tokenizer.
• Added command line option -c that turns GLE into a calculator.
• Added option -gs for fast GhostView previewing (by Axel Rohde) (only on Unix).
• Added rgb255() and rgb() functions.
• Added set arrowsize 0.5 arrowangle 30 to control shape of arrows.
• Local variables can now be used in graph blocks.
• Slope, Offset and R squared values of regression plots can be stored in global variables.
• Removed dependency on BOOST library.

4.0.8

• One executable "gle" instead of one for each driver "gle_ps" and "gle_svg".
• Output to .pdf/.png/.jpeg by linking to GhostScript.
• Support for LaTeX expressions in GLE scripts using the command "tex" or the macro "\tex{}". (Examples can be found here.)
• Support for bitmap import (.jpeg/.png/.tiff/.gif) using the commands "bitmap" and "bitmap_info". (An example can be found here.)
• Options "impulses", "steps", "fsteps", and "hist" for the graph command "dn line".
• Option "round" for the commands "box" and "begin box" to simplify drawing boxes with rounded corners.
• Command "separator" in keys to construct keys with multiple columns. Option "absolute" to the offset command to position the key, e.g., at the bottom-center of the output.
• Function "format$" for formatting numbers (e.g., format$(1/3,"fix 3") = 0.333). Option "format" to the axis graph command to format the labels in a similar way.
• Functions "pagewidth()", "pageheight()", "width(name)", "height(name)", "pointx(name)", "pointy(name)".
• Command "print" for writing to the command prompt.
• Support for config file $GLE_TOP/glerc and $HOME/.glerc (on Unix).

4.0.7

• No more segmentation fault when encountering some types of errors.
• Unix version can now handle dos text mode files, gle, makefmt and fbuild.

4.0.6

• Includes makefiles for OS/2.
• Fix for slow rendering of long complex paths in postscript file. Speed now equivalent to 3.3h.
• Tweak to exe and src release filenames i.e gle_version_[src,exe]_[platform]....
• Exits gracefully when it cant open a file such as a data file in graph, image file, include file or using fopen.

4.0.5

• Fix unix/linux compile issues with afm files. They now have the proper line endings for Unix.
• Fix compatability issue with 3.3h: ATN and ATAN now work equivalently. In 3.3h only ATN worked for arctangent?

4.0.4

• Fix unix/linux compile issues.
• Will search c:\program files\gle (WINDOWS) or \usr\local\bin (UNIX) directories if GLE_TOP environment variable is not set.
• Proper wildcard/globbing handling on UNIX (assumes shell does the expansion).
• Minor improvement on file finding and error reporting.
• Cleanup of unused functions and varibles in gle.cpp.
• Windows binary now compressed with upx.

4.0.3

• Accepts filenames with wildcards/globbing i.e. "gle_ps *.gle" will compile all gle files in current directory.

4.0.2

• Fixed problem with program crashing when it couldn't open the gle file or include file.
• New zip files of source code and win32 executables.

4.0.1

• Fixed problem with PATH and GLE_TOP not being set properly in installer. Fixed problem with loading include files from GLE_USRLIB.

4.0.0

• Code cleanup from 3.5.
• Compiles with latest C++ compilers.
• Has better error reporting where it prints out the line number and text associated with the line (even if the error was detected in an include file).
• Removed ncurses dependancy.