This is the Change Log for PHPlot.
The project home page is http://sourceforge.net/projects/phplot/
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===== Released as 5.0rc3 =====

2006-11-13 (lbayuk)
    * Fix for bug 1437912: x-axis label misalignment [bar charts]
      The calculations were redone from scratch.
      New control variable 'bar_extra_space', which works in addition to
      'group_frac_width' to control how much extra space is around the bars.
      Made bar widths match for 'stackedbars' and 1-bar-per-group 'bars'.

      NOTE: This changes the appearance of charts. bars in 'stackedbars'
      will now be thinner, and bars in 'bars' graphs will be thicker. I
      saw no reason for them being different before.

      This fix required fixing the positioning on the new bar data labels,
      which was off before.  The bar data labels will now be centered.
      Additional fixes to bar chart data labels:
         For negative values, the label will center under the bar.
         Fixed X-adjustment to account for shading.
         Fixed to not suppress the data label if the value is 0.


2006-11-10 (lbayuk)
    * Fix for bug 1594457: DrawError text wrap and background fix
      Do error image white background correctly, and word-wrap the text.

    * Fix for bug 1594458: Suppress lines or points in 'linepoints' 
      Don't draw X data labels twice for 'linepoints'.
      Allow SetPointShapes value 'none' to suppress points, and allow
      SetLineStyles value 'none' to suppress lines. This allows a 'linepoints'
      graph to mix lines only, points only, and both on the same graph.


2006-11-09 (lbayuk)
    * Fixes for bug 1446523:
      + Wrong variable name in deprecated SetAxisFontSize()
      + Fails to properly handle error if SetDataValues() was never
        called, or not called with a data array.

    * Fix for bug 1117122: Pie Chart ignores SetPlotAreaPixels
      Don't let DrawGraph recalculate the plot area for pie charts if the
      user already set it with SetPlotAreaPixels.

      NOTE: This fix may slightly change the appearance of some pie charts,
      whether or not they use SetPlotAreaPixels.

    * Fix for bug 1103992: Wrong max Y calculated for stackedbars
      Changes FindDataLimits to calculate max Y correctly. It was counting
      the first Y value in each record twice, which is always wrong but
      only affected stackedbars because the Y values are summed.

    * Fix for bug 1096199: Wrong error bar colors in DrawDotsError.
      Rewrites DrawDotsError to make it work like DrawLinesError to
      correctly increment the record and color indexes.
      Also fixes uninitialized x_now_pixels.

    * Fix for bug 1096197: No borders on unshaded Draw[Stacked]Bars
      Unshaded Bars and StackedBars covered the border with the rectangle.
      The fix is to draw the rectangle, then the border.

      NOTE: This fix changes chart appearance. Bars and Stacked Bars
      will now get a black border around each bar by default, if you
      turn off the 3D-shading. If you want borderless, unshaded bars
      you need to use SetDataBorderColors to set the data border colors
      to be the same as the data colors.

    * Fix for bug 1333164: Negative data values, if string variables, result
      in unfilled bars. The problem was a string-to-string compare of a
      negative number with the empty string x_axis_position. Fixed by
      initializing x_axis_y_pixels to 0 if SetXAxisPosition was not used.


2005-04-17 (afan)
    * Fix for bug [ 1161072 ] SetInputFile warning, background overwrite

    * Bug 1182672 fixed

2005-04-15 (afan)
    * fix for bug: [ 1182666 ] Y Auto-scale rounds in wrong direction

    * Fix for bugs 1144644 TrueType font path problems and 1106328 TTF
      path/filename inconsistency

    * Fix Bug: [ 1117120 ] X Title sizing uses Y Title font height

2005-04-13 (afan)
    * Error in SetLineStyles() - does not accept an array argument


2005-03-29 (afan)
    * Small typo fixed in SetYDataLabelPos

    * Update SetDataLabelPos: For past compatability we accept plotleft,
      ...but pass it to SetTickLabelPos

2005-03-26 (afan)
    * Change to line 3802: data lables now work with multiple bars with *$idx

2005-03-25 (afan)
    * Added Function DrawDataLabels to put data labels in world coords,
      added call from DrawBars and modified SetYDataLabelPos to flag
      whether or not to call DrawDataLabels.

2005-01-20 (migueldb)
    * Many bugfixes reported and solved by L. J. Bayuk. Thanks!
      + fixed bug #1096190
      + FindDataLimits(): fixed bug #1096192
      + CalcTranslation(): fixed bug #1101317
      + DrawImageBorder(): fixed bug 1096200
      + DrawXDataLabel(): fixed bug 1099879
      + DrawDots(): fixed bug #1096194

===== Released as 5.0rc2 =====

2004-10-24 (migueldb)
    * array_merge_php4(): added to cope with the bug introduced by
        the change in array_merge() from PHP4 to PHP5 (I haven't verified this)
    * Fixed some divisions by zero, thanks to an old bug report.

2004-09-09 (migueldb)
    * SetPointSize(): deprecated
    * SetPointSizes(): added as replacement for SetPointSize().
      Now able to set point sizes on a per line basis.
    * SetPointShape(): deprecated.
    * SetPointShapes(): added as replacement for SetPointShape().
      Now able to set point shape on a per line basis.
    * DrawDot(): now needs record number to decide which dot shape and
      size to draw.
    * CalcMargins(): dirty fix for x data label placing.
    * tile_img(): fixed tile placement.

2004-06-14 (migueldb)
    * SetXTickLabelPos() and others: more on the bug reported by Jo Demol.
    * Fixed bug reported by Jo Demol.

2004-05-11 (migueldb)
    * SetBgImage(): added.
    * SetPlotAreaBgImage(): added.
    * SetInputFile(): deprecated.
    * DrawBackground(): now accepts images as backgrounds.
    * DrawPlotAreaBackground(): now accepts images as backgrounds.
    * tile_img(): internal method added.

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Editor's Note: For older changes to PHPlot, please see the CVS logs.