7. ChangeLog

2006 Sep 09: PyXPlot 0.5.8

• Many bugfixes to error trapping and reporting.

2006 Aug 26: PyXPlot 0.5.7

• set display command implemented.
• set keycolumns command implemented.
• CTRL-C behaviour changed; no longer quits PyXPlot.
• plot `*.dat' now arranges files alphabetically.
• Escaping of LaTeX $<$ and $>$ symbols fixed.
• Major bugfix to fit command's error estimation.
• Major bugfix to the positioning of legends in the ``outside'' and ``below'' positions to avoid overlapping with axes.
• help command text substantially revised.

2006 Aug 18: PyXPlot 0.5.6

• Ability to unset variables via ``a='' implemented.
• Handling on scipy error messages in the int_dx and spline commands improved.
• Colour-highlighted terminal added.
• The inline help system made much more complete.
• select modifier implemented.
• set texthalign and set textvalign implemented.
• set xticdir command implemented.
• Support for CSV input datafiles implemented.
• pyxplot_watch quiet mode added. Also, behaviour changed to allow the watching of files, even when they do not initially exist.
• Labels can now be placed on ``nolabels'', ``nolabelstics'' and ``invisible'' axes. Example 10 changed to demonstrate this.
• set log, when issued on its own, now applies to all axes, rather than throwing an error.

2006 Jul 25: PyXPlot 0.5.5

• pyxplot_watch implemented.
• fit command now gives error estimates, as well as correlation matrices.
• Many new pointtypes added, including upper and lower limit symbols.
• Handling of SIGINT improved; now exits current command in interactive mode, and exits PyXPlot when running a script.
• Quote characters can now be escaped in LaTeX strings, to allow strings with both ' and " characters to be rendered.
• Installer no longer creates any files belonging to root in the user's homespace.
• show xlabel and show xrange implemented.
• Bug fix: cd command no longer crashes if target directory doesn't exist.
• Bug fix: some commands, e.g. plot, which previously didn't work when capitalised, now do.
• Major bug fix to int_dx and diff_dx functions.

2006 Jul 3: PyXPlot 0.5.4

• edit command implemented.
• Numerical integration and differentiation functions implemented.
• New makefile installer added.
• man page added.
• Brief tour of gnuplot syntax added to documentation.
• Many minor bug fixes.

2006 Jun 27: PyXPlot 0.5.3

• set bar and set palette implemented.
• Stacked barcharts implemented.
• Command history files and the save command implemented.
• Plotting of functions with errorbars implemented.
• Ability to define a LaTeX preamble implemented.
• Bug fix to smoothed splines, to ensure that smoothing is always applied to a sensible degree by default.
• Bug fix to the autoscaling of bar charts, histograms and errorbars, to ensure that their full extent is contained within the plot area.
• Bug fix to arrow plotting, to prevent PyX from crashing if arrows of zero lengths are plotting (they have no direction...)

2006 Jun 14: PyXPlot 0.5.2

• spline command, and csplines/acsplines plot styles implemented.
• Syntax plot[0:1], with no space, now allowed.
• Automatic names of datasets in legends no longer have full paths, but only the path in the form that the user specified it.
• Bug fix to the handling of LaTeX special characters in the automatic names of datasets, e.g. file paths containing underscores.
• Error messages now sent to stderr, rather than stdout.
• multiplot mode now plots items in the order that they are plotted; previously all arrows and text labels had been plotted in front of plots.
• set backup command implemented, for keeping backups of overwritten files.
• Bug fix, enabling the use of axis x5 without axis x3, and likewise for y.
• unset axis command implemented, for removing axes from plots.
• `invisible', `nolabels', and `nolabelsticks' axis title implemented, for producing axes without text labels.
• plot 'every' modifier re-implemented, to use the same syntax as gnuplot.
• fit command re-implemented to work with functions of $>$ 1 variable.
• plot with pointlines defined as alias for `linespoints'.
• plot using rows syntax implemented, for plotting horizontally-arranged datafiles.
• Bug fix to replot command in multiplot mode, to take account of any move commands applied to the last plot.
• Bug fix to errorbar pointsizes. pointsize modifier now produces sensible output with all errorbar plot styles.
• show command re-implemented to accept any word that the set command will.

2006 Jun 2: PyXPlot 0.5.1

• Pling and cd commands implemented; ` ` shell command substitution implemented.
• Arrows (both from set arrow and the arrow command) can now have linetypes and colours set.
• Colours can now be specified as either palette indices or PyX colour names in all contexts - e.g. `plot with colour red'.
• Function plotting fixed to allow plotting of functions which are not valid across the whole range of the x-axis.
• Transparent terminals now have anti-aliasing disabled.
• Warnings now issued when too many columns are specified in plot command; duplicate errors filtered out in two-pass plotting.
• Function splicing implemented.
• Documentation: sections on barcharts, function splicing, and datafile globbing added.

2006 May 27: PyXPlot 0.5.0

• Name changed to PyXPlot.
• Change to distribution format: PyX Version 0.9 now ships with package.
• Safety installer added; checks for required packages.
• `errorrange' plot styles added; allow errorbars to be given as min/max values, rather than as a standard deviation.
• `boxes', `wboxes', `steps', `fsteps', `histeps' and `impulses' plot styles implemented - allow the production of histograms and bar charts.
• plot with fillcolour implemented, to allow coloured bar charts.
• Handling of broken datafiles sanitised: now warns for each broken line.
• gridlines on multiple axes, e.g. `set grid x1x2x3' now allowed.
• Major bugfix to the way autoscaling works: linked axes share information and scale intelligently between plots.
• -help and -version commandline options implemented.
• `using' specifiers for datafiles can now include expressions, such as $(2+x).
• eps terminal fixed to produce encapsulated postscript.
• datafile names now glob, so that plot `*' will plot many datafiles.
• Documentation: examples 6,7 and 8 added.

2006 May 18: GnuPlot+ 0.4.3

• text and arrow commands now accept expressions rather than just floats for positional coordinates.
• clear command major bug-fixed.
• `plot with' clause bugfixed; state variable was not resetting.
• Automatical key titles for datafile datasets made more informative.
• Autoscaling of multiple axes bugfixed.
• Autoscaling of inverted axes fixed.
• set grid command fixed to only produce x/y gridlines when requested.
• X11_singlewindow changed to use gv -watch.
• landscape terminal postscript header detection bugfixed.
• noenhanced terminal changed to produce proper postscript.
• Plotting of single column datafiles without using specifier fixed.

2006 May 4: GnuPlot+ 0.4.2

• Autoscaling redesigned, no longer uses PyX for this.
• Numerical expression handling fixed in set title, set origin and set label.
• Handling of children fixed, to prevent zombies from lingering around.
• arrow command implemented.
• set textcolour, set axescolour, set gridmajcolour, set gridmincolour and set fontsize implemented.
• Colour palette can now be set in configuration file.
• Ranges for axes other then x1/y1 can now be set in the plot command.
• Postscript noenhanced can now produce plots almost as big as an A4 sheet.
• Plotting of one column datafiles, against datapoint number, implemented.
• Negative errorbars error trapped.
• Comment lines now allowed in command files.

2006 May 1: GnuPlot+ 0.4.1

• Documentation converted from ASCII to LaTeX.
• ChangeLog added.
• Configuration files now supported.
• Prevention of temporary files in /tmp overwriting pre-existing files.
• set term enhanced / noenhanced / landscape / portrait / png / gif / jpeg / transparent / solid / invert / noinvert implemented.
• set dpi implemented, to allow user to choose quality of gif/jpg/png output.
• 'set grid' command now allows user to specify which axes grid attaches to (extended API).
• Support introduced for plotting gzipped datafiles. Filenames ending in `.gz' are assumed to be gzipped.
• load command implemented.
• move command implemented.
• Long lines can now be split using `linesplit character at the end of a line. Any whitespace at the beginning of the next is omitted.
• text / delete_text / undelete_text / move_text commands implemented.
• refresh command implemented. (extended API)
• point types, line styles, and colours now start at 1, for gnuplot compatibility.
• default terminal changed to postscript for non-interactive sessions.

2006 Apr 27: GnuPlot+ 0.4.0

• Bug fix: now looks for input scripts in the user's cwd, not in /tmp.
• `set logscale' is now valid syntax (as in gnuplot), as well as `set log'.
• multiplot implemented, including linked axes, though with some brokenness if linked axes are allowed to autoscale.
• `dots' plotting style implemented.
• Bug fix: can now include a plot `with' clause after an `axes' clause; could not previously without an error message arising.
• Pointstyles now increment between plotted datasets, even in a colour terminal where the colours also increment.
• garbage collection of .eps files from the X11 terminal added. Previously they were left to fester in /tmp.
• pointlinewidth added as a plot style, specifying the linewidth to be used in plotting points. `set plw' and `set lw' both added (extended API).
• delete, clear and undelete commands added to the multiplot environment.
• unset command implemented.
• set notitle implemented.

2006 Apr 14: GnuPlot+ 0.3.2

• The autoscaling of logarithmic axes made more trust-worthy: error checks to ensure that they do not try to cover negative ordinates.
• Error checks put in place to prevent empty keys being plotted, which made PyX crash previously. Now can plot empty graphs happily.
• Datasets with blank titles removed from the key, to allow users to plot some datasets to be omitted from the key. This is not possible in gnuplot.
• Bug fix to prevent PyX's texrunner from crashing irreparably upon receiving bad LaTeX. Now uses a spanner to attempt to return it to working order for the next plot.
• Bug fix to the autoscaling of axes with no range of data - previous did not work for negative ordinates. Now displays an axes with a range of +/- 1.0 around the data.

2006 Apr 12: GnuPlot+ 0.3.1

• Plotting of functions fixed: plot command will now plot any algebraic expression, not just functions of the form f(x).
• Space added after command prompt.

2006 Apr 12: GnuPlot+ 0.3.0

• X11_singlewindow and X11_multiwindow terminals implemented, as distinct from just standard X11.
• Key positioning allowed to be xcentre, ycentre, below and outside, as well as in the corners of the plot. Key allowed to be offseted in position.
• Datasets colours can be set via `plot with colour $<$n$>$'
• Datasets are split when there is a blank line in the datafile; lines are not joined up between the two segments.
• set size implemented; can now change aspect ratio of plots.
• working directory of GnuPlot+ changed to /tmp, so that LaTeX's temporary files are stored there rather than in the user's cwd.

2006 Mar 30: GnuPlot+ 0.2.0

• Standard GnuPlot dual axes improved upon, allowing users to add x3, x4 axes, etc, up to any number of axes that may be desired.
• Autocomplete mechanism for commandline substantially cleaned up and debugged.
• Bug fixes to the plotting of arrows/labels. Now appear above gridlines, not below.

2006 Feb 26: GnuPlot+ 0.1.0