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30 May 2003 JpGraph 1.12.2

==========================

* [me & A. Tang] Added support for Chinese font and character handling.

  This requires you to install the "simhei.ttf" Chinese font.

* [J Sweat] Fix bug [#124] Make step line style ignore NULL values in data

* [J Sweat] Fix bug [#123] Divide by zero for line length of zero for dashed lines

* [me] Fix bug [#109]. Problem with pie color when a supplied color array

  contains more colors than data. For anti-aliased images that meant that

  the last n colors was used and not the first n colors.

* [me] For plotmarks that use the ALT string the wrong value was in due

  to the recent addition of both Y and X value to control the plot callback.

  This has now been fixed so that it will work as before and that previous

  code that assumes one parameter in their ALT srting will see the Y-value at

  the plotmar. New is also that the X-value is given as a second

  parameter. This means that the ALT string can display both the Y and X value

  for a specific point.

* [me] Make it possible to disable individual plot legends through the method

  Plot::HideLegend()

* [me] Fixed problem with SetTextTickInterval() together with grouped bars

  (bug #116)

* [me] Fixed a problem with shadows on accumulated bar plots (bug #111)

* [me] Fixed Legend::SetMarkAbsSize()

* [me] Add error check for the case that the server (Windows)

  doesn't support SystemRoot and TEMP server variables.

* [me] Fix short-open-tags bug that made it's way into 1.12.1 (bug #121)

* [me] Make sure we only pass integers into GD when positioning texts.

* [me] Always treat "" (empty string) as NULL for bar plots

* [me] Allow links from vertical position 0 on gantt charts

12 Apr 2003 JpGraph 1.12.1

==========================

* [me] Added Legend::SetLineSpacing() to control the vertical line

  distcance (in pixels) between legend texts.

* [me] Compensate for bug in imagecopyresampled() in GD 2.01.

  This made clipping unusable with GD 2.01

* [me] Added LinePlot::SetFillFromYMin() to make the fill start from

  the bottom of a Y-scale with negative values rather than the 0-value

  which is now the case.

* [me] Fix a problem with legend box layout in the case of TTF fonts

  and different lengths of individual texts. The layout engine now

  work out each column individually. This will also give the legend

  box the minimum possible size.

* [me] Compensate for possible bug in strtok() when parsing color

  specification as a string with adjustment factors.

06 Apr 2003 JpGraph 1.12

========================

* [me] Added possibility to specify the position of the legend box

  with absolute pixels coordinates not only as fractinos as before.

* [me] Improved legend layout. It is now possible to specify

  the number of columns in the legend box. The preferred way of

  specifyin the layout is now Legend::SetColumns(). The oild

  way with SetLayout() is still available for backwards compatibility

  reasons. The old vertical layout corresponds to a 1 column

  layout (SetColumns(1) which is also the default).

* [me] Added possibility to specify text string position

  using scale coordinates onto the plot by adding

  Text::SetScalePos(). The autoscaling has been modifyied to

  be aware of the text scale positions.

* [me] Added builtin images for plotmarks. This also meant a

   refactoring exercise for the PlotMark class and it has now been

   split in sevaral files.

* [me] Added footer capability to Radar, Pie and Gantt charts

* [me] Improved upon rounding problem with GD2 and pie slices

       (defect #88)

* [me] Take shadow color as specified with Graph::SetShadow() into account.

* [me] Don't rotate the footer if the graph is rotated.

* [me] Added Axis::HideLabels()

* [me] Adjusted of the automatic margin calculation so that it is

  aware of when the x-axis have been hidden.

* [me] Added PlotMark::SetCallbackYX(), This allows for the

  specification of a callback function which is given both X and Y

  coordinates. Also extended the returned values from the callback so

  that image in a marker can be dynamically modified both size and

  actual image file used. This will enable the use of advanced

  "push-pin" graphs. For example adding markers to a background image

  map of certain size and type.

  For backwards compatibility any callback specified with

  PlotMark::SetCallback() will not be given the extra parameter. So

  old code does not need to be changed.

* [me] Fixed handling of PHP array URL parameters with CSIM. [Bug #82]

* [me] Added Legend::SetFrameWeight() which adjusts the frame around

  the legend. Legend::SetLineWeight() now works as documented and sets

  the line weight for the markers instead.

* [me] Autoscaling will now also take the value of added lines into account.

* [me] Fixed problem with horizontal legend box becomming too small

  for many legends.

* [me] Radar plot. SetColor() always sets a fill color. Fixed (Bug #83)

* [me] Added SetWidth() for tab-title. The tab can now easily extend

  over the entire plot width. Added SetPos() as synonym in tab title

  for SetTabAlign().

* [me] Gradient bar plots now show a gradient mark in the legend

* [me] PiePlot3D::SetSliceColors() now more correctly specifies the

  color anti-clockwise. The same order that slices are drawn.

* [me] Pie position can now also be specified in absolute pixels

  in PiePlot::SetCenter()

* [me] Added Bevel frame for entire graph

* [me] Added possibility for some more advanced Graph title

  formatting through the Graph::SetTitleBackground() method.

* [me] Type safe comparison in auto-detection of GD version

* [me] Added Graph::SetCanvasColor() to specify the background color

  the canvas is initialized with.

* [me] Fine tuned label positiong for pie labels and made 3D pies

  take the specified labels into account.

* [me] Added Anti-aliasing to Pie charts. Looks good but it really

  slows down the pie generation. Enable by acalling

  PieGraph::SetAntiAliasing()

* [me] Ignore NULL values in Stock and bar plots

* [me] Some minor internal adjustments for rounding in log scales.

2 Feb 2003 JpGraph 1.11

=======================

* [Martijn] Compensate for GD 2.x bug in filledarc() which doesn't

  like negative angles.

* [me] Added Graph::SetBackgroundGradient() . This allows

  a gradient to be used as a background. The gradient can either fill

  the whole frame, only the margin or just the plot area. See the

  class reference or the manual for details regarding this method.

* [me] Modified adjustment factor for colors so that it now

  is linear between dark and light, i.e. a factor of 1 is the original

  color, a factor of 0 is black and a factor of 2 is white.

* [me] Added two new gradient style GRAD_LEFT_REFLECTION and

  GRAD_RIGHT_REFLECTION

* [me] Some fine tuning of text layout in legend box

* [me] Radar plots can now have a background image and multiple

  titles (sub-title, and subsub title).

  Added RadarGraph::SetPos() as alias for

  RadarGraph::SetCenter().

* [me] Fixed a small pre-read-loop error which could casue the

  X-gridline to be outside the right edge of the plotarea if the

  X-scale was indented.

* [me] Added possibility to use (scaled) images as markers by

  introductin the new mark type MARK_IMG.

* [me] Added tab titles for graphs. See class reference and Example

  tabtitleex1.php.

* [me] Added filled grids by adding method Grid::SetFill(). This new

  feature is illustrated in example filledgridex1.php. Documented in

  section 6.2.11 in the manual.

* [me] Improved automatic margins so they adapt to one or more title

  lines automatically.

* [me] Fixed a class hierachy bug. RotImage::DashedLine() should not be

  implemented but rather rely on the Image::DashedLine() since the

  rotation will happen in the RotImage::Line() which gets called in

  Image::DashedLine() by any istance of RotImage().

  You could see the ffect of this by trying to create a 90 degrees

  rotated graph with dashed gridlines, they would appear not to be

  rotated at all where in fact they were rotated twice.

* [me] Added automatic default margins when using Set90AndMargin()

* [me] Added Box plots which is a variant of Stock charts with the

  possibility to add the median as a horizontal line in the box.

* [me] Added Stock charts, (aka candle-bars) as new class StockPlot().

  added example stockplotex1.php in the Example directory.

* [me] Added two new axis styles AXSTYLE_YBOXOUT, AXSTYLE_BOXIN which

  suplicates the Y-axis on both sides but not the X-axis.

* [me] Set90AndMargin() now also adjusts the label alignment on the

  axis to suit the rotation.

* [me] Added class LineErrorPlot which alolows a line plot to

  have error bars (+/- delta error).

* [me] Added Ticks::SetSize()

* [me] Modified size for plot mark circle so it will have the

  specified width as radius and not as diameter.

* [me] Added Ticks::SetSize() to be able to set the absolute size

  in pixels of the tick marks.

* [me] Default directories for Fonts and Cache now gets set

  automatically.

13-Jan 2003 JpGraph 1.10.1

==========================

* [me] Fix bug in Band pattern Left diagonal and Right Diagonal where

  the drawing was incorrect when width < height

* [me] Take the border on/off switch into account for line AddArea()

* [me] Added color parameter to Axis::SetTickLabels() to make it

  possible to set individual colors on labels.

* [me] Fixed PiePlot::SetSliceColor() so that colors are now specified

  in the same order as slices.

* [me] Gantt, Radar and Canvas graph now also considers the special file

  _IMG_HANDLER (returns the actual image handler and doesn't stream

  picture back)

* [Christian Reiser] Pie graphs can now also return the IMG_HANDLER

* [Richard Black] Removed case sensitivity for extension of

  background images. Added support for handling file names with

  multiple '.' characters in the path for background images.

* [me] Added error check for imagettfbbox() since it can give

  a file not found error even though both file_exists() and

  is_readable() reports that the file exists and is readable

  in the case when PHP basedir restriction is in place.

* [me] Corrected CSIM handling in Gantt for non-file based

  Gantt charts.

* [me] Note to self: 1.10p

* [me] Gracefully handle the abnormal case where no valid data points

  is included in the Y-data array when creating a line plot.

16-Dec 2002 JpGraph 1.10

========================

* [me] Added GanttGraph::CreateSimple() whihc is a utility method to

  help create simple gantt charts with a minimum of code.

* [me] Added new plot (FieldPlot) type which handles field plots. This is

  basically a variant of scatter plots where each point is represented

  as an arrow which a specific direction (0-360 degrees).

* [me] Added Graph::SetY2OrderBack() to control of plots on Y2 should

  be under (in z-order) te plots on Y. By default they are on top.

* [me] Avoided a potential 1-pixel off rounding problem if a user

  supplies a non integer canvas width and height in the Graph() call.

* [me] Added two new formats for week scale in Gantt

  charts. WEEKSTYLE_FIRSTDAYWNBR, WEEKSTYLE_FIRSTDAY2WNBR These

  formats adds the weeknumber as well to displaying the date of the

  start of the week. Also tweaked the auto-sizing of the Gantt charts

  to adjust for the size of the text in the week scale.

* [me] Fixed wrong define in jpgraph_gantt.php for WEEKSTYLE_DAY2

  (Bug #45)

* [me] Improvements on manual scaling. If a manual scale is specifed

  (in the Graph::SetScale()) you are now longer required to specify a

  major and minior tick interval (but of course you can still do it

  with a call to Ticks::Set() ).

  A suitable intervall will be automatically

  caclulated in the same way as for autoscaling. By default the exact

  limits for the scale as specified will be used. This means that

  depending on the scale and tick intervall chosen the max value of

  the scale may or may not fall on a major tick mark. If you want that

  behaviour you need to call Scale::SetAutoTicks(). By using this call

  you give the algorithm permission to slightly adjust the specified

  min and max values (if needed) so that they wil fall on a even

  major step.

* [me] Added error check if user tries to use SetTextLabelStart()

  with a logarithmic scale (where it is undefined).

* [me] Default marker for scatter plots are now a filled square

* [me] Adjusted the x-axis labelling for a 1-pixel off limit. Which

  sometimes (depending on the image size and scale) could cause a

  linear scale's last label not to be shown.

* [me] Fixed bug report #40

* [me] Fixed positioning of caption for full odometers. (Bug #34)

* [me] Fixed spelling mistake in jpgraph_odo.php which casued

  Odometer::SetLabelPos() to have no affect. (Bug #33)

* [me] Fixed an overzeoulous optimization which skipped both rotation

   and translation for angle=0. Addresses (Bug #36)

* [me] Colors can now include an alpha channel specification as well.

  The alpha channel is specified in the text string separated by a

  a '@' , for example "red@0.5". The alphachannel is specified as a

  fraction between 0.0 and 1.0.

* [me] Improved filled line plots so they now handle negative values

  in a more standard way.

* [me] Added automatic detection of what version of GD is installed.

* [me] Aligned the order of legends and slices for pie and 3D pies so

  that they now follow the more common order of clockwise slices with

  legends from top to bottom.

* [me] Changed call to deprecated function SetLinePos() to SetLineSide()

* [me] Added clipping to generated plots. This means that if you have

  plots (for example lines) which extends outside the scale range it

  will be clipped. This might come in handy in for example balloon

  plots. Clipping is enabled by default but can be controlled by a

  call to Graph::SetClipping()

* [me] Fixed a problem with circles and filled circles when they were

  rotated twice in a rotated graph. (Bugtraq #26)

* [me] Added Graph::Set90AndMargin() which helps for doing a 90

  degrees rotation and getting the margins right. (Otherwise you have

  to adjust them manually since height becomes width and width becomes

  height when you rotate 90 degrees)

  Changed the horizbar* examples to use the Set90AndMargin()

* [me] Changed the behaviour of plot marks in legends. The possible

  format callback is no longer called. Instead the plotmarks are

  set to a default size.

* [me] Added three more plotmarks MARK_LEFTTRIANGLE,

  MARK_RIGHTTRIANGLE, MARK_FLASH. These new types are primarily meant

  to be used with GanttCharts.

* [me] Added constrain lines to GanttCharts. It is now possible to

  illustrate start-end, start-start, end-start and end-end

  constrains. This is illustrated by adding lines with arrows,

  Use GanttPlotObject::SetConstrain()

* [me] Added Image map support for Gantt chart. Bar and titles can now

  have associated image map targets. Use GanttBar::SetCSIMTarget()

  GanttBar::SetCSIMAlt() and for titles use

  GanttBar::title::SetCSIMTarget() and  GanttBar::title::SetCSIMAlt()

* [me] Fix problem in Gantt graph whereby the progress bar indicator

  could extend over the end date if an explicit date scale was set.

* [me] By default logarithmic scale now print the labels as 10^3

  instead of 1000. You can change the behaviour with the new

  method for logarithmic ticks, SetLabelLogType().

  Also added the possibility to have a callback for log scales

* NOTE TO SELF 1.9p

* [me] Added the possibility to specify a value > 1 as the position

  for labels in PieGraph::SetLabel() to increase the margin between

  the label and the edge of the pie.

* [Olaf Kandel] Fixed subtle bug in the printing of the month scale for the

  case where the start and end month hjave the same number but

  are on different year. This would cause the width for the

  first month to be wrong.

Jpgraph 1.9.1

=============

* [me] Fixed defects #20 and #21 (spelling mistake and and one

overzelous last minute error check I added). I have to eat a lot

of humble pie over these ones. Sorry to all who have been affected.

What can I say? Human error........

JpGraph 1.9

===========

* [me] Changed the way TTF fonts are handled. The font files are no

  longer distributed with JpGraph due to potential copyright problem.

  This change also has the advantage that it is now very

  straigthforward to install new fonts whatever their naming

  conventions are.

  1. If you are running on a standard Windows system just point the

  TTF directory to your standard font directory and use the available

  fonts in windows.

  2. If you are on a Unix system you can download the MS Core TTF

  files from http://corefonts.sourceforge.net/. The old MS EULA allows

  distribution of the fonts in unaltered form (Win EXE) and this

  project exercises this right and provide tools to download and

  install the fonts on a UNIX system.

* [me] Renamed this release from 1.8.1 to 1.9 due to the big

  change in the handling of TTF fonts which breaks backward

  compatibility due to the copyright problem with TTF fonts.

* [me] Improved the TTF pargagraph layout engine for consistency

  in handling "\n\r" vs "\n". It is now always sufficient to

  use just "\n".

* [me] Adjusted the text positioning for StrokeBoxedText()

  to use the new GetBBoxHeigh() and GetBBoxWidth().

* [me] Added  Image::GetBBoxHeight(), Image::getBBoxWidth()

* [me] Once and for all fixed the handling of rotated TTF text by

  adding Image::GetBBoxTTF() which returns the bounding rectangle

  (which is not the same as the bounding box except for angle==0)

* [me] Added argument to Legend::SetColor() to make it possible

  to specify both frame and font color.

* [me] Cosmetic adjustment of markers in legend so that they are

  positioned exactly in the middle of the text string.

* [me] Corrected the positioning of TTF fonts when defining the

  hotspot as 'bottom'. It could be up to 4 pixel off when using

  texts that contained character that extended below the TTF

  baseline e.g. '('.

* [me] Added possibility to use a cache system with CSIM images

  as well. The cache system is used slightly, slightly different

  and require a call to the new method Graph::CheckCSIMCache()

  This is unfortunately unavoidable due to the nature of CSIM in

  HTML. The documentation is updated to deal with this. This also

  added two more defines CSIMCACHE_DIR and CSIMCACHE_HTTP_DIR

* [me] Added CSIM (Client Side Image Maps) to legends, added

  target and alt arguments to all Plot::SetLegend()

* [me] Added functionlity to pass on any URL arguments when using

  StrokeCSIM() (Bug: #006)

* [me] Fixed so that Gantt charts can again have just the width

  specified and have the height automtically sized. (This was a

  regression introduced in 1.8) (Bug #005)

* [me] Added error check for return value from imaagecolorsforindex()

  in Anti-aliased lines. In combination with GD2, no-true-color, a

  true color background (ala JPG) this can fail since it gets a color

  which doesn't exist (since it uses imagecolorat()).

* [me] Improved edges support in 3D Pies.

* [me] Changed Image::Polygon() so i now draws an open polygon and not

  a closed one.

* [me] Legends for scatter plots no displays the mark used for

  each scatter plot and not just a square with the correct

  color.

* [me] Fixed a small cosmetic problem in that horizontal legend

  box was sometimes not wide enough and made a small adjustment

  of the positioning of marks in the legend box for better

  apperance. (Bug #0017)

* [me] Improved manual by adding linked TOC.

* [me] Added Bezier curve to canvas Shape class. Added Bezier canvas

  example canvasbezierex1.php

* [me] Added Paragraph Alignment setting in Text::Align() as well to

  avoid seprate call to Text::SetParagraphAlign()

* [me] Added Image::SetExpired() . By default the image now sends

  back a couple of variants of "no-cache" headers to force the browser

  to reload.

* [me] Some serious speed improvments for 3D Pie plots. It can now be

  up to 6000% faster (yes that's right 6000%!). This is the way I had

  planned on doing it but for time reasons were pushed out of 1.8.

  I have completely changed the algorithm that handles the individual

  slices on the expense of a slightly more complicated implementation.

  This means that there is no performance difference between 2D and

  3D Pie Plots.

* [me] Fix bug for rotation of paragraphs (multi-line) texts.

  A limitation for now is that rotated pargraphs always gets

  paragraphs align "left". (Bug: #008)

* NOTE TO SELF: 1.8p

* [me] Fixed a typo that had the strange affect that paragraph strings

  which started with a number would have larger distance between the

  individual lines since that number would be interpretated as the

  angle for the text!

* [me] Fixed a problem with marks getting out of sync if NULL values

  are present in the line plot. (Bug #0018)

* [me] Scatterplot no skips NULL values instead of treating them

  as zero.

* [me] Added LinearScale::SetAutoMax() as complement to SetAutoMin()

* [me] Added LinearScale::SetAutoTicks() this makes it possible to

  manually set a scale but still have the tick marks automatically

  determined. By default this feature is off to keep old code

  behave exactly the same as before. If this is enabled any

  Ticks::Set() calls are ignored.

* [me] Added possibility to adjust the position of the displayed

  value for bars via the BarPlot::SetValuePos() method. Added new

  example example20.5 to demonstrate this.

* [me] Bugfix: Fixed color themes for 3D pie plot. The color array

  was not wrapped around in the case where more slices (data points)

  than colors is used. (Bug: #001)

* [me] Documentation is now 100% pure HTML and does not require

  any PHP. Previously a PHP script was used to generate the

  highlighted source used in the image/source frames. All this

  is now pre-generated in the docs.

* [me] Position the values in a scatter plot in the center of the

  plot mark by default (Setting align to 'center','center' and margin=0

* [me] Added LinePlot::SetBarCenter to make it possible to center the

  line on the bars when combining a plot with both bars and lines.

  The new example 'ceneterdlinebarex1.php' demonstrates this.

[19-Sep-2002] JpGraph 1.8

=========================

* [me] Added Text::SetPos() as alias for Text::Pos() to harmonize with

  other setting methods.

* [me] Made Graph::Add() polymorphic. You can now use Graph::Add() to

  add all plot objects and you don't longer have to use AddText(),

  AddLine(), AddBand() and so on.

* [me] Added PiePlot::SetLabelPos(), added some more Pie examples.

* [me] Improved the API for class Text by adding SetShadow() to make

  it more like the other objects. Extended Text::SetBox() with shadow

  width and corner radius.

* [me] Added the possibility for Text object to use the new rounded

  rectangles as the filled background.

* [me] Added possibility to add arbitrary labels inside the pie plot

* [me] Added special filename __IMG_HANDLER to make it possible to

  have Graph::Stroke() return the image handler instead of stroking

  the image to file (or stream it back).

* [me] Improve FilledCircle() to avoid moire-patterns in circle.

* [me] Added middle type pie plot

* [me] User specified values for the band position is truncated to the

  min  and max values of the axis.

* [me] Added possibility to use Text::SetMargin() for all the titles

  in a graph

* [me] Added SetSize() as synonym for SetWidth() for plot marks.

* [me] Updated some of the examples with more comments.

* [me] Fixed problem with with jpg background images wrongly being

  loaded with imagecreatefromjpg instad of imagecreatefromjpeg

* [me] Corrected the positioning of individual titles for 3D

  plots.

* [me] Added Text::SetMargin() to make it easy to have context

  sensitive margins.

* [me] Added capability to have background images on Pie and 3D

  Pie plots

* [me] Added method Axis::HideLine() which hides the axis line but

  nothing else.

* [me] Fixed bug in Stroke::Text() where negative coordinates

  wasn't properly handled. We must allow negative absolute

  coordinates since these might be rotated/translated into

  "real" screen coordinates. This fixes the bug, for example

  in bar_csimex1.php where the first value of the bar wasn't

  displayed.

* [me] More adjustment of how the rounding takes place with

  coordinates. This should now avoid all potential difference

  between different graphic objects.

* [me] When you use automatic labelling on text scale it now starts

  at 1 and not at 0. This makes more sense since most people (except

  mathematicians) start counting from 1.

* [me] Example directory:

       - Added more advanced canvas examples

       - Updated all CSIM examples

       - ~60 new example script which are used in the new documentation

* [me] Compensate for bug in imagettfbox() which return to small size for

  large fonts.

* [me] Added jpgraph_canvtools.php which contain some utility classes for

  use with canvas graphs.

* [me] DOCUMENTATION: The class reference is now included in the release.

* [me] DOCUMENTATION: Completely rewritten the original

  Word-introduction to JpGraph to pure HTML. This will be a living

  document that will be updated  as time moves on. This is currently

  considered "Beta" and more chapters need to be added but this is

  a good start!!

* [me] Added full support for multiline legends. (See for example

  nullvalueex01.php. Also improved the way lineplot with marks

  are illustrated in the legend by adding the line underneth the

  plotmark.

* [me] Added some utility classes to be able to draw DB schema for

  DDDA. This is tailored for my DB abstraction layer (jpdb.php)

  in DDDA but is generic enough to work in other circumstances as well.

  The classes can be found in utils/misc/imgdbschema.inc

  Please see (run) dbschema_ddda.php which shows how it looks

  in a real life example.

* [me] Tweaked the positioning of TTF fonts and how the width and

  height are determined. Making more carefull assumptions about

  how the baseline is handled for individual lines of text.

* [me] Added class RectangleText() which makes it easier to work

  with text inside a rectangle with rounded corner.

* [me] Added support for multi-line TTF paragraphs with paragraph

  formatting. This was previously only supported for the builtin

  fonts. All text object should now support fully formatted paragraphs

  of text.

* [me] Added Image::RoundedRectangle() and

  Image::FilledRoundedRectangle()

* [me] Added format callback to plot marks. This makes it

  possible to individually adjust the plot marks depending

  on it's specific data value. See balloonex1.php

* [me] Added some initial support for super script used for

  scientific numbering, i.e properly print for example 10^2

  where the 2 is in superscript. This is all handled by the

  new class SuperScriptText(). Not yet used in the actual

  labels drawing but will be added shortly.

* [me] Added a small tool mkgrad.php in the utils directory to

  make it a breeze to create gradient squares which may be

  used as background images.

* [me] Added footer class to graph. This makes it easy to have

  left,center and right footers in your graphs.

* [me] Added subsubtitle to graphs

* [me] Improved/Changed the way you work with CSIM. This new method

  makes it possible to generate CSIM without having to create an

  intermediate image on disk.

  Added Graph::StrokeCSIM(). Added new chapter in the docs on how to

  work with CSIM

* [me] Changed naming of Spider* to Radar* since SpiderGraph is a

  copyrighted name.

* [me] Modified the automatic suppression of the first value of the

  X-axis when the Y-axis have negative value so it don't happen

  in the case where the X-axis is positioned at the minimum of

  the Y-axis.

* [me] Fixed spelling error of BK* instead of the correct BG*

  for the default settings of background image style.

* [me] Some internal code changes to RGB() class to make it easier

  to use directly for external scripts.

* [me] Changed the behaviour of filled line plot so that they

  don't go down to 0 for null values in the plot but instead

  behaves like '-' for non-filed plots, just ignore them and

  connect the previous and next point instead.

* [me] Fixed problem in integer scaling where it certain scale

  combinations could generate floating point labels! Ooops..

  (Affects IntCalcTicks())

[5-July-2002] JpGraph 1.7

==========================

* [me] Removed the APACHE_CACHE_DIRECTORY define since it is

  not used.

* [me] Added Image map functionlity for rotated bar graphs,

  also added new example for this (bar_csimex3.php)

* [me] Made Ticks::SetPrecision() deprecated. Use SetFormatString()

  instead

* [me] Fixed problem with incorrect string being returned from

  ToCyrillic()

* [me] Allow Y2 axis to use "int" scale

* [me] Fixed problem with wrongly names framework function for

  patterns

* [me] Fixed small problems with margins being slightly off for

  roated images.

* [me] Changed name of PlotMark::SetMarkColor() to PlotMark::SetColor()

  for consistency

* [me] Added example with "hidden" Y-axis.

[17-June-2002] JpGraph 1.7-BETA

===============================

* [me] Added DisplayValue::SetFormatCallback() to make it possible to use

  a user specified formatting callback routine.

  (Note:: Yes, this is very nono-OO but the proper OO way, by forcing the

  user to define a subclass of the plot class where the formatting method

  is overridden will probably not fly with to many non-OO PHP peoples since

  a callback is conceptually simpler.)

* [me] Added DisplayValue::HideZero(). Makes it possible to hide zero values

  in labels, for example zero slices in pie's, (e.g. $pieplot->value->HideZero())

* [me] Added manual scaling to Gantt graphs, added example to illustrate

  this, fixscale_gantt.php

* [me] Adding image maps for Y2 scale as well.

* [me] Fixed a small bug which made it impossible to use BRAND_TIMING with

  Gantt charts. Enabling timestamping of graphs would give a "PlotArea to small"

  error.

* [me] Made a very small change to the AutoScaling algorithm to yield tighter

  boundaries, i.e with the existing algorithm, depending on rounding problems

  a plot which had a maximum value of, say 4, could get a autoscaling max

  value of 5. Not a big problem (or hardly a bug) but not what I wanted.

  All my 111 test cases works fine with the modification but I'm still

  not convinced that this (very minor) adjustment is 100% (I can distinctly

  remember that I had a good reason to do it the original way, I just can't

  remember what :-)

* [me] Graph titles may now have multiple rows. By default the lines will

  be centered, but this may of course be adjusted by a call to, for

  example, $graph->subtitle->ParagraphAlign('left');

* [me] Added class FuncGenerator() to make it easy to generate

  function plots (both normal and polar). To illustrate this I have

  added three new examples funcex1.php,funcex2.php,funcex3.php.

* [me] Added Axis::HideFirstLastLabel() to hide first and last label on

  axis. This is usefull if we have a box around the plot area and we don't

  want the labels to owerwrite the box (see funcex1.php)

* [me] Make sure GD2 variables is registred in $GLOABALS[]

* [me] Fixed bug in image maps for marks. Alt strings was incorrectly

  indexed so it was only using values 0,2,4.. instead of 0,1,2,...

* [me] Added Graph::SetAxisStyle(). This makes it easy to use

  a few number of preset axis setup. For example duplicating the axis

  as a border around the plot. Preset axis position availabel are

  AXSTYLE_SIMPLE, AXSTYLE_BOXIN, AXSTYLE_BOXOUT

* [me] Made Axis::SetTickLabelMargin() deprecated. Use

  Axis::SetLabelMargin() instead. Name change to make it more

  consistent with the other margin settings.

* [me] Made Ticks::SetSide() a synonym for Ticks::SetDirection()

  to make it consistent with side setting for labels and values.

* [me] Added Axis::HideZeroLabel() as a shortcut for

  axis->scale->ticks->SupressZeroLabel()

* [me] Internal code changed. Replace the use of FontProp in SpiderGraph

  with Text() and some additoinal code cleanup.

* [me] Adjusted Image::Arc() so that no negative angles are

  passed on to GD imagearc() since it barfs at negative angles.

* [me] Added PiePlot3D::SetHeight() which is used to specify the

  height in pixels of the 3D pies instead of using the default

  height.

* [me] Pie plots (both 2D and 3D) now displays the slice labels

  by default.

* [me] Added two more Examples. barintex1.php shows how to use

  integer scale and barscalecallbackex1.php shows how to use

  a callback function for formatting the scale.

* [me] Modified grace calculation for Integer scale to have higher

  sensitivity.

* [me] Restructured code so class DateLocale is now in jpgraph.php

  rather than in jpgraph_gantt.php. Also added $gDateLocale as a

  global instance of the class DateLocale

* [me] Modified integer autoscale to correctly handle very small values

  (needs special handling of max==1 to avoid fraction)

* [me] Changed the way min value is extracted when finding the baseline

  for bar plots. Now uses the function Scale::GetMinVal() instead of

  reading the value directly fomr the instance variable. This makes it

  work better with logscales so that the bar starts from the min value

  of the log scale. Also added check in bar PreStrokeAdjust() to see if

  we are using a log Y-scale to automatically adjust the Y-base.

* [me] Optimized Stroke() loop for LinePlot so calls to PlotMark::Stroke()

  will only be done if the marks are really to be shown.

* [me] Added Axis::SetLabelAlign().

* [me] Made some internal modifiaction on how Axis title gets aligned

  to make it possible to specify it manually without having it

  automtically set. This makes it possible to generate nice

  horizontal bar graphs.

* [me] Added three examples in the Example directory on how to make

  horizontal bar graphs.

* [me] Don't always set Y-axis position automtically

* [me] Add Text::SetAngle() as synonym for SetOrientation()

  Added SetLabelSide() as synonym for SetlabelPos()

* [me ]Make it possible to manually specify the alignment of the textstring

  for the title position. This makes title looks nicer with horizontal

  bar graphs.

* [me] Allow Y-axis labels to be at an angle

[14-May-2002] JpGraph 1.6.3

===========================

Changes/Additions:

* [me] Added functionality to make AccBarPlot::SetAbsWidth() work in

  jpgraph_bar.phps

* [me] LinePlot::SetColor() no longer sets the color of the plotmark.

  The problem that some people had was that if you set the mark color

  specifically first and then unsuspecting called SetColor() for the

  line the color for the plotmark circumference would also be set making

  it look like the PlotMark::SetColor() didn't work.

* [me] Improved the functionality of GanntGraph::SetDateRange() to make

  it possible to display a section of the graph.

  (In previous version it was a checked error if you tried to plot

  a graph where any activity bar was outside the specified area.

  This is now changed to only cap the bars to the area.

  This makes it more suitable to handle big gantt charts

  which now can be split into several images to show different

  parts of the projects)

* [me] Added GanttScale::SetWeekStart() to set the start of week to an

  arbitrary day. For example SetWeekStart(0) will make the weeks start

  on Sunday, SetWeekStart(1), Monday and so on.

* [me] Fixed a rounding error in Gantt chart that could cause the week

  start day to off by one.

* [me] Modified the Min() and Max() methods for AccLineBar's to avoid

  them overestimating the max value. (Basically now using the same

  methods as in AccBarPlot)

* [me] Added missing code to do percentage calculation for 3D Pies so

  they work the same way as the 2D Pies.

* [me] Added error check for the case where the image is so small that

  the available plot area becomes to small.

* [me] Compensate for a PHP bug (#12474) in strtotime() which can affect

  Gantt chart so that the same month name is shown twice.

  See http://bugs.php.net/bug.php?id=12474

* [me] Compensate for the documented shortcomming in my

  3D Pie algortitm whereby a small exploded slice close to 270 degrees

  get's slighthly nagged at tha base due to the fact that the z-order

  stroking algorithm is only perfect if the slices are not exploded.

[20-April-2002] JpGraph 1.6.2

=============================

Changes/Additions:

* [me] Slightly adjusted LinearTicks::Stroke() to better handle som

  potential rounding problems.

* [Thomas George] Added LinePlot::AddArea() which makes it possible

  to just fill part of a line plot (a part that is specified with a

  start and end x-point)

* [Thomas George] Fixed bug with missing coordinate when using filled

  line plot with step style.

* [me] Added client side image maps to scatter and line plots

* [me] Fixed problem with warning "IMG_ARC_CIRCLE not defined" when

  running on GD 1.x

* [me] Removed test with is_null() in jpgraph.php to make JpGraph 1.6.2

  work with older versions of PHP (especially 4.02).

[07-April-2002] JpGraph 1.6.1

=============================

Changes/Additions:

* [me] Modified autoscaling for the case where all values are equal to

  make the min/max difference larger.

* [me] Fixed bug in 3D pies for certain data values

* [me] Fixed bug with images maps assuming that slices

  where order anti-clockwise and the new pie algorithm did them

  clockwise.

* [me] Added subtitle to Pie and Pie3D graphs.

[02-April-2002] JpGraph 1.6

===========================

Changes/Additions:

* [me] Changed license to QPL

* [me] Completely rewritten algorithm for 3D pies which gives MUCH better result. Will

  also allow exploded 3D pies.

* [D. Reinbach] Better handling of filling line plot with negative

  values

* [me] Added LinePlot::StrokeDataValue() for easy handling of plotting

  data point values.

* [Gyozo Papp,me] Real locales for Gantt chart. The locales now take a

  proper locale string (e.g. "en_UK", or "sv_SE") to get the real

  locales from the system. Note that this breaks the sc compatibility

* [me] Removed jpgraph_dir.php and moved the directory settings back in

  jpgraph.php due to problems in PHP with nested includes and search

  paths.

* [me] Added possibility to show values for scatter plot by

  refactoring value support back into jpgraph.php Plot() class. This

  makes it easy for all subclasses that uses Plot() to add display

  value support.

* [me] Added possibility to use X-coordinates in Error plots

* [me] Fixed missing LogScale::SetXLabelOffset(). This made it

  impossible to use linear plots with a log x-scale !!!

* [me] Fixed bug  so possible Y2 plots are also taken into account when auto

  scaling the X-axis. This could otherwise couse plots outside the

  scale when using Y and Y2 plots where Y2 plots had more data values.

* [me] **********!!SC BREAK!!**************

  Aligned the way values are displayed on Bar graphs with line and

  scatter plots. The values to be displayed for these plots are now

  all accessed through the "value" property of the plot. For example

  $myBarPlot->value->Show();

  instead of the previous

  $myBarPlot->ShowValue();

* [me] **********!!SC BREAK!!**************

  Aligned the way values are displayed in Pie plots with line and

  bar plots. You know use the "value" property in exactly the same way

  as in bars and lines.

* [me] **********!!SC BREAK!!**************

  Aligned the way values are displayed in 3D Pie plots with line and

  bar plots. You know use the "value" property in exactly the same way

  as in bars and lines.

* [me] Added possibility to display individual values in an

  accumulated bar graph in addition to the overall accumulated

  value. This is done as usual through setting the individual bars

  value property to what you want (size, color, format and so on)

* [me] Added another default error handler which is image based to

  make it easier to see error messages when images are included

  in a page. This is now the default error handler.

* [me] Added possibility to specify the location of the X-Axis

  to the top of the graph by using xaxis->SetPos("max") also

  added new Example topxaxisex1.php to demonstrate this feature.

* [me] Added more 3D pie examples to demonstrate new functionlity.

[01-March-2002] JpGraph 1.5.3

=============================