ZedGraph Class Library Revision History

17-Jan-2006 (by Champion) v4.2.4
[UPD] Add call to ZoomEvent from MouseWheel action
[UPD] Add public property to access GraphPane.ZoomStack

12-Jan-2006 (by Champion)
[NEW] Add ZedGraphControl.ZoomPane()

7-Jan-2006 (by Champion)
[UPD] Exclude points from GetRange() that are <= 0 for log scales
[FIX] Make Fill.IsVisible retain original FillType when set to true

26-Dec-2005 (by Champion)
[UPD] Add Scale class and one subtype for each AxisType
[FIX] CalcNumTics was whacked for MajorUnit of Hours, Minutes, or Seconds
[UPD] Improve XDate to work with fractional seconds and/or milliseconds

21-Dec-2005 (by Champion)
[FIX] panebase draws fill even if PaneFill.IsVisible is false -- fixed
[UPD] Avoid overlap by checking actual spacing (particular useful for Exponential scales)
[UPD] Make scale labels apply scaleMult for Exponential scales

20-Dec-2005 (by Champion)
[FIX] ZedGraphControl.cs IsEnableVZoom/IsEnableHZoom properties referenced themselves, causing stack overflow
[NEW] Add MouseUpEvent, MouseMoveEvent and change MouseDownEvent to just use (object sender, MouseEventArgs)
[UPD] Add lots of paranoid tests in ZedGraphControl.cs to avoid null object references
[NEW] Add code from jackply to add exponential axis option

15-Dec-2005 (by Champion)
[NEW] Add TimeSpan options to XDate.ToString()

11-Dec-2005 (by Champion)
[NEW] Add Fill.RangeDefault

8-Dec-2005 (by Champion)
[FIX] Make cross logic work properly for isScaleLabels inside on secondary axes
[NEW] Add AxisGap property to control space between secondary axes

7-Dec-2005 (by Champion)
[FIX] Make stack bar & stack line work with non-ordinal axes

29-Nov-2005 (by Champion)
[NEW] Add IsEnableVZoom and IsEnableHZoom to constrain zoom in ZedGraphControl
[NEW] Add implicit float cast in XDate

24-Nov-2005 (by softlion, concern the webcontrol only)
[FIX] major bug, positioning of graph items was not working at all. Action: removed X1 and Y1 (redundant, described as alias of X and Y). Their 0 value were overriding the original X and Y values.
[UPD] Renamed AxisFill to GraphFill, AxisBorder to GraphBorder, AxisRect to GraphRect so axis and graph space becomes two correctly separated things.
[NEW] MasterPaneFill and MasterPaneBorder properties
[NEW] Transparency is shown as squares in the designer.
[REM] PNG transparency is supported in FireFox. To get it also in IE6 or less, you must use the IE7 javascript http://dean.edwards.name/IE7/ like this:
	<script>
	window.IE7_PNG_SUFFIX = "\\.png(?:\\?.*?)";
	</script>
	<script src="ie7/ie7-standard-p.js" type="text/javascript"></script>

23-Nov-2005 (by Champion)
[FIX] Ten Power placement for scale labels
[FIX] ShowPointValues with Text Axes and IsOverrideOrdinal
[FIX] Center data when range is zero for PickScale()
[FIX] remake font based on actual prior font size instead of persistent field
[FIX] modify XDate docs to explain Excel date bug
[NEW] add SampleMultiPointList class to illustrate IPointList usage
[NEW] demo pane with four y axes
[NEW] StickItemDemo, several Bars with Labels demos

22-Nov-2005 (by Champion)
[FIX] minor fix for cross axes with IsScaleLabelsInside

22-Nov-2005 (by softlion)
[UPD] Updated Web sample in C# to work with new RenderMode option
[FIX] Minor bug fix introduced in 21-nov-2005 version
[FIX] Workaround for .NET File.GetCreationTime method's bug.

21-Nov-2005 (by softlion)
[FIX] Caching with new rendering mode was not working as expected.
[NEW] The generated image tag has now a querystring to defeat browser caching mechanism when an update is needed.
[NEW] ColorOpacity property in "Fill" structures. We should created a new Color selector designer with the ability to set the color alpha channel instead, but this is a quick start.
[NEW] Added and updated some comments

19-Nov-2005 (by softlion)
  Major changes to the web interface:
  DataSource property works. Optional DataSource are also available on each curve, by default it uses the main DataSource. DataMember property is available as a main property for the base axis (x axis) and as a property on each curve (y axis).
  New RenderMode property to render as an IMG tag instead of generating and returning an image on the fly. A temporary image file is created and saved in the folder specified by the new RenderedImagePath property. The file name is the control ID (may change in a near future).
  Comments uptdated and added on properties
  Property categories change for readability (ASP.NET pages made with previous version will need to upgrade)
  Major and minor grid properties for all axis are now grouped into a child item
  minor bug fix: image generated on the fly also sends HTML IMG tag


6-Nov-2005 (by Champion)
  Make ScrollBar SmallChange proportional to LargeChange (thanks to tafkat)
  
4-Nov-2005 (by Champion)
  Fix Thumb size for scrollbars
  Add Deutsch translation for "Image copied to clipboard" phrase
  Add protection against manually set axis limits that exclude all data
  
31-Oct-2005 (by Champion)
  Add Swedish Translation, fix Spanish translation, add "Image copied to clipboard" to localization
  Split out context menu actions into public methods

7-Oct-2005 (by Champion)
  Fix LinearAsOrdinal and DateAsOrdinal off-by-one error and use blank label for out of range condition
  Add GraphPane.IsZoomed Property
  Add LegendPos.TopFlushLeft and BottomFlushLeft

25-Sep-2005 (by Champion)
  Fix crash when drawing pie charts that get too small (AxisRect dimensions less than zero)
  Fix DateAsOrdinal & LinearAsOrdinal indexing problem
  Fix Mouse double click problem in ZedGraphControl
  
22-Sep-2005 (by Champion)
  Add support for multiple Y and Y2 axes (major mods throughout)
  Add Axis.IsAllTics property
  Fix FindNearestPoint bug for text type axes
  Add ZedGraphControl.IsShowCursorValues
  
9-Sep-2005 (by Champion) v4.2.3
  Fix issue with CalcDateStepSize() for max label calcs where the step number is only a target, not a max

4-Sep-2005 (by Champion) v4.2.2
  Fix problem with copy constructor on HiLowBar.cs, HiLowBarItem.cs, MasterPane.cs
  
26-Aug-2005 (by Champion)
  Add HSBColor struct
  Add French (thanks to Fred Thomas) localization file
  Add Deutsch and Spanish (thanks to codemeier) localization files
  
22-Aug-2005 (by Champion)
  Add Localization to ZedGraphControl
  Fix ContextMenu mouse location issue

21-Aug-2005 (by Champion)
  remove set requirement from IPointList
  Add ZedGraphControl.IsAutoScrollRange and SetScrollRangeFromData()

19-Aug-2005 (by Champion)
  Fix Pie.SlicePath access in FindNearestPoint
  Fix y position calc for axis title when IsScaleVisible=false

18-Aug-2005 (by Champion)
  Add new AxisType's LinearAsOrdinal and DateAsOrdinal

17-Aug-2005 (by Champion)
  Add new CoordTypes to allow mixed coordinate systems.
  Move Transform for the Coord system up to the PaneBase so there is only a single function
  
13-Aug-2005 (by Champion)
  Disable the ZedGraphControl.PanModifierKeys due to a bug in VS2003 causing compiler error
  
11-Aug-2005 (by Champion)
  Fix rotated scale spacing logic to allow lapping at angles

10-Aug-2005 (by Champion)
  Add IPointList interface
  Remove ErrorBarItem.BarBase and HiLowBarItem.BarBase -- use GraphPane.BarBase instead
  Add BasicArrayPointList
  
8-Aug-2005 (by Champion)
  Add strong name key to assembly
  
2-Aug-2005 (by Champion) v 4.2
  Fix roundoff problem on scrollbars
  Fix Auto flags in ZedGraphWeb
  Fix the web demos to work properly

21-Jul-2005 (by Champion)
  Add PolyItem
  Add ArrowItem.Style
  Add CurveItem.FontSpec
  Make LineItem.Symbol & LineItem.Line modifiable
  Add StickItem
  Don't clone the PointPairList on AddCurve()
  Add DropShadow to FontSpec

19-Jul-2005 (by Champion)
  Add IsCrossTic, IsInsideCrossTic, IsMinorCrossTic, IsMinorInsideCrossTic
  
15-Jul-2005 (by Champion)
  Add PointPairList.Insert overloads

14-Jul-2005 (by Champion) v4.1.8beta
  Add Axis.IsScaleLabelsInside
  Add Axis.IsSkipFirstLabel
  Add Axis.IsSkipLastLabel
  Add ZedGraphControl.ScrollMinY2, ScrollMaxY2, IsScrollY2
  Revamp Axis.Cross logic, GraphPane.CalcAxisRect, and Axis.CalcSpace
  
6-Jul-2005 (by Champion) v4.1.7
  Add Axis.IsAxisSegmentVisible
  Fix axis space code to not have space when tics false, scalevisible false, etc.

5-Jul-2005 (by Champion) v4.1.6
  Fix GraphicsPath bug (using StartFigure) for X-Cross, Plus, and Star Symbols
  Initialize MasterPane in ZedGraphControl to IsShowTitle = false

26-Jun-2005 (by Champion)
  Fix bug to Remake fonts when family, italic, bold, or underline changes
  Show MinorInsideTics, MinorOutsideTics, and MinorGrids even if MinorTics are not shown

6-Jun-2005 (by Champion) v4.1.5
  Add GraphItem.IsClippedToAxisRect
  Fix isShowTitle problem (was not being initialized at all)

4-Jun-2005 (by Champion)
  Fix BarCenterValue() to properly handle ErrorBars and HiLowBars

3-Jun-2005 (by Champion) v4.1.4
  Add PointValueEvent
  
29-Apr-2005 (by Champion) v4.1.3
  Fix IsShowTitle so it does not get set to false if title is blank
  
19-Apr-2005 (by Champion) v4.1.2
  Add BarType.ClusterHiLow
  Add Curve.IsOverrideOrdinal
  Fix bug with LegendPos.BottomCenter
  Fix bug that allows crash if gridDash on/off is zero

16-Apr-2005 (by Champion) v4.1.1
  Fix FindNearestPoint() for Y2Axis curves
  Fix FindNearestPoint() for bars that extend beyond axis range

15-Apr-2005 (by Champion) v4.1.0
	Add scrollbars to ZedGraphControl (IsShowHScrollBar, IsShowVScrollBar)
	ScrollMinX & ScrollMaxX control the X bounds 
	ScrollMinY & ScrollMaxY control the Y bounds
	Use ScaleFormat for numeric labels and dates.
	Remove NumDec and NumDecAuto 
	Subscription event for zoom/pan notification (see ZoomEvent)
 
19-Apr-2005 (by Champion) v4.0.8
  Fix roundoff bug for bar width (when scale has large values like dates)
  Add PointPairList.Equals & PointPair.Equals
  Add AddCurve methods with lineWidth
  Make ToolTips disappear if mouse moves away from point
  Don't show tooltips for invisible curves
  Add Axis.IsScaleVisible
  
18-Apr-2005 (by Champion) v4.0.7
  Fix context menu event for null case
  Fix CurveItem.IsLegendLabelVisible
  
16-Apr-2005 (by Champion) v4.0.6
  Fix panning for log scales
  Add wheel mouse zoom
  Add Context Menu event/delegate
  
15-Apr-2005 (by Champion) v4.0.5
  Fix XDate roundoff bug
  
11-Apr-2005 (by Martz)
  Fix missing min/max properties on Axis proxy

02-Apr-2005 (by Martz)
  Added multiple pane support to web control

29-Mar-2005 (by Champion) v4.0.4
  Fix zeroline for filled curves
  Add SetX(), SetY(), SetZ() methods to PointPairList
  
25-Mar-2005 (by Champion) v4.0.3
  Fix Gradient by Value for Bars
  
21-Mar-2005 (by Champion) v4.0.2
  Fix IsFontsScaled
  
20-Mar-2005 (by Champion) v4.0.1
  Add protection on CalcNumTics -- no more than 500 tics
  AxisChange() -- Always call pickscale before CalcAxisRect() to make sure scales are reasonable

19-Mar-2005 RELEASE VERSION 4.0

17-Mar-2005 (by Champion)
  Added Save As... to context menu
  Fix up Web Demos
  
17-Mar-2005 (by Martz)
  Add ZedGraphWebPointPairCollection

15-Mar-2005 (by Champion)
  Fixed a bug that caused missing tics at the beginning of the axis for date type axes

15-Mar-2005 (by Martz)
  Added C# and VB web demo for visual designed graphs
  Added C# and VB web demo for multi-graph per webform

10-Mar-2005 (by Champion)
  Added horizontal stacked bar demo
  Fix bug in CurveList.GetStackRange() (failed to account for BarBase)
  Added GraphPane.IsBoundedRanges & modifed GetRange() cascade to include bounds
  
7-Mar-2005 (by Champion)
  Add comments to demo code, more cleanup
  
7-March-2005 (by Vos)
  Updated the demo tab forms and some minor updates to the other demo code (commenting and such)

4-Mar-2005 (by Champion)
  Update Demos
  Change BarValueHandler to ValueHandler

28-Feb-2005 (by Champion)
  Fix ColorSymbolRotator to use symbolCount.  Add more symbols & colors
  Add gradient color overload for GraphPane.AddPieSlice
  Revert demo project back to remove the property control
  
23-Feb-2005 (by Champion)
  Add Axis.BaseTic property
  Add ZedGraph.LibTest project to have a class library based general testing platform
  
22-Feb-2005 (by Champion)
  Add ZoomState stack for maintaining history of zoom and pan states in UserControl
  
19-Feb-2005 (by Champion)
  Make Axis label shift along with axis for non-default Cross value
  Make bounding axis label visible if pane.AxisBorder.IsVisible = false
  Add Pan/Zoom/Copy/ShowValues/AutoScale options in new context menu for ZedGraphControl

14-Feb-2005 (by Martz)
  Fix subitem persistance bug
  Add designtime graph display
  Add remaining proxy class members

12-Feb-2005 (by Martz)
  Fix control parsing error
  Add full support for graphpane and a variety of additional objects
  Move proxy/object mapping to individual objects
  Add support for static default values where possible
  Add graphitem partial support
  Add initial support for DataBinding

9-Feb-2005 (Champion)
  Make ZGControl tooltips display text for AxisType.Text
  Push Legend functionality up to PaneBase so MasterPane has a legend
  Add Axis.Cross to allow axes at non-default locations
  
21-Jan-2005 (by Champion)
  Replace GraphPaneList with MasterPane
  Add PaneList as GraphPane collection class
  Add PaneBase as parent of MasterPane and GraphPane
  
18-Jan-2005 (by Champion)
  Add GraphPaneList
  Use Tag.Clone() when ICloneable available
  Fix GraphItemList copy constructor
  Fix PieItem copy constructor
  Add Tag to GraphPane
  
17-Jan-2005 (by Champion)
  Add ZedGraphControl.PointDateFormat
  Move Axis visibility setup for pies to AxisChange()
  Move pie rect calcs out to static PieItem.CalcRect()
  Fix LegendPos.TopCenter problem (missing switch)
  Add Pie Serialization
  Fix Z-Order treatment of GraphItems in FindNearestObject

17-Jan-2005 (by Kaye)
  Fix up PieItem; Remove PieSlice

15-Jan-2005 (by Champion)
  Fix GraphItem Copy Constructor
  Fix +1 pixel error on ZedGraphControl bitmap
  Fix StringAlignment bug for FontSpec
  Fix maxlabels bug
  Fix ordinal transform bug for lines/symbols

8-Jan-2005 (by Champion)
  Fix CurveList.GetRange bug for stacked curves
  Some code cleanup
  Add SplineInterpolateX to PointPairList

7-Jan-2005 (by Martz)
  Add expanded interface for Web Chart

5-Jan-2005 (by Champion)
  Add Line Stacking via GraphPane.LineType
  Add Serialization - Implement ISerializable
  Fix StringAlignment bug for FontSpec
  Add Interpolation methods to PointPairList
  Fix maxlabels bug for text axes

10-Dec-2004 (by Champion)
  Add Z-Order control to GraphItems
  Add CollectionPlus base class with Move(), etc. methods
  Change ErrorBar ends to Symbols
  Add SymbolType.HDash and SymbolType.VDash
  
8-Dec-2004 (by Champion)
  Add FindNearest unit tests
  Fix extreme outlier overflow problem for symbols
  
8-Dec-2004 (by Kaye)
  Add Unit Tests
  
7-Dec-2004 (by Champion)
  Add overloaded constructors to PointPair for Tag labels
  Add ToolTip capability to ZedGraphControl to show point values
  Make ZedGraphControl.Image have bitmap 1 pixel wider & taller
  
3-Dec-2004 (by Champion)
  Add BoxItem, EllipseItem types
  Add BarValueHandler to handle stacking calcs
  Add ZedGraphWeb asp control stuff
  Fix FindNearestPoint

17-Nov-2004 (by Champion)
  Add ImageItem
  
16-Nov-2004 (by Champion)
  Convert ArrowItem & TextItem to children of GraphItem
  Delete TextList & ArrowList, make new GraphItemList
  
16-Nov-2004 (by Champion)
  Add ErrorBar (I-beam) graph type
  Convert HiLowBar type to a separate HiLowBarItem class
  Fix Hatch and PathGradient brush problem
  
9-Nov-2004 (by Champion)
  Add FillType.GradientByX, Y, Z
  Fix & Consolidate DrawSingleBar() code
  Add UserControl transparency
  Add new Fill constructors for ColorBlend, color array, etc.

5-Nov-2004 (by Champion)
  Add BaseVal to PointPair
  Remove PointTrio and PointTrioList entirely
  Add BarType.SortedOverlay
  Add DrawSingleBar code
  
2-Nov-2004 (by Champion)
  Fix scaling logic throughout - all sizes now in points
  Fix CalcScaleFactor so scale factor is world pixels/standard point
  Legend Height calculation now accounts for big symbols
  Correct Axis border so it is drawn with floats instead of ints (avoids misalignment)
  Add GraphPane.IsPenWidthScaled
  Add scaling to pen widths throughout
  Fix Fill.IsScaled (missing from copy constructor)
  Fix missing scale factor on tic spacing for axis text
  Add GraphPane.ScaledImage()
  
31-Oct-2004 (by Champion)
  Fix Image ScaleTransform bug
  Fix another reference problem in BuildPointsArray()
  
30-Oct-2004 (by Champion)
  Fix array ref problem when index=0 in BuildPointsArray()
  CVS was wacky, corrected a few files

29-Oct-2004 (by Kaye)
  Add BarType.Stack

28-Oct-2004 (by Champion)
  Add BarType.HiLow
  Add DateTime constructor to XDate
  PointTrioList is child of PointPairList

22-Oct-2004 (by Champion)
  Add PointTrio + PointTrioList
  Add Sum() to PointPairList
  
14-Oct-2004 (by Champion)
  Add Location class
  Add Legend Float mode
  Add Expanded Collection object functions Remove(object), IndexOf(object), Insert()
  
13-Oct-2004 (by Champion)
  Change Frame class to Border
  Add CurveList.Remove( curve )
  Add TextItem( string, float, float, CoordType )
  
12-Oct-2004 (by Champion)
  Make CurveItem an abstract base class & add BarItem & LineItem
  Fix BaseDPI problem, get rid of the BaseDPI property
  Speed up Symbol draws using GraphicsPath & transform scaling
  Add Frame and Fill Classes
  Add DrawLegendKey() to BarItem & LineItem
  
7-Oct-2004 (by Champion)
  Add MinorGrids
  IsZeroLine defaults to false for X axis
  GetRange widens range by ClusterScaleWidth/2 for non-ordinal bars
  
1-Oct-2004 (by Champion)
  FindNearestObject works for TextItems and ArrowItems
  Add SymbolType.Default and SymbolType.None
  
30-Sep-2004 (by Champion)
	Add CurveItem.IsVisible and CurveItem.IsLegendLabelVisible logic
	Fix the zero axis range bug
	
29-Sep-2004 (by Champion)
	Add FindNearestObject() method to GraphPane (still working on TextItem & ArrowItem)
	
24-Sep-2004 (by Champion)
	Add StringAlignment property to FontSpec
	
23-Sep-2004 (by Champion)
    Add AlignP type, and Axis.ScaleAlign property
    
22-Sep-2004 (by Champion)
    Eliminate legend entries for curves with blank labels
    
21-Sep-2004 (by Champion)
    Release 3.0
    Fix grid so it's behind the bar/line fills
    
18-Sep-2004 (by Champion)
    More Constructors for Fill class, gradients/texture fills
    Add Fill.IsScaled and Fill.AlignH/V

15-Sep-2004 (by Champion/Vos)
    Fix roundoff problem that caused the last scale label to occasionally disappear
    Add SetMinSpaceBuffer() to GraphPane and Axis
    Add a check in MakeBrush() to make sure the rect width and height are at least 1.0

14-Sep-2004 (by Champion)
    Add gradient fills to symbol type
    Symbol Frame can now have different color than fill
    Fix problem with smoothed curve and fill
    Draw Axes after curves so curve fill doesn't cover up axis line
    Add Axis.MinSpace property

13-Sep-2004 (by Champion/Vos)
    Fix problem with brushes scaled to zero width rect
    Fix scale label width calc bug in CalcMaxLabels()
    Add Brush.Dispose() calls after MakeBrush()

12-Sep-2004 (by Champion)
    Add new Fill class to handle gradient fills
    Add "Area under curve" shading
    Add gradient Fill class to paneRect, axisRect, legend, bar, line

11-Sep-2004 (by Champion)
    Fix space allocation for rotated Axis Labels
    Add gradient fills for bars

1-Sep-2004 (by Champion)
    Fix grace so that it won't extend across negative/positive boundary
    Finish up #region's

31-Aug-2004 (by Champion)
    Added Curve Smoothing (Line.IsSmooth, Line.SmoothTension)
    Added PointPair.IsInvalid
    Added PointPair implicit cast to PointF
	
31-Aug-2004 (by Vos)
    Cleaned up some of the files, making the #region'ing more consistent (some files still need to be done)

30-Aug-2004 (by Champion)
    Fix single point plotting (bug in validity checking code)
    Fix calls to Transform() so that Transform(i,x) is only called for bar charts
    Fix XML Comments to get rid of error messages
    Change the AddPoints() methods of PointPairList to overloaded Add()
    Add a couple unit tests
    
30-Aug-2004 (by Vos)
    Added locking to the ZedGraphControl to make it thread safe
    Added a .AxisChange() method to the ZedGraphControl (it creates a new Graphics object every time it is called)
    Added a ZedGraphException class
    ZGC.Image now throws a ZedGraphException if the control has been disposed
    Added a ZGC.BeenDisposed property, which checks if the GraphPane is null. This probably should have a separate field in the ZGC called beenDisposed, but for now it doesn't.
    Projects now reference the main ZedGraph by using project references instead of direct .dll references

27-Aug-2004 (by Champion)
    Add MinGrace and MaxGrace
    Fix up overlapping labels with double PickScale() call

26-Aug-2004 (by Champion)
    Fix problem with zero/negative values on Y Log scale
    Add long unittest
    clean up unit test code to three fixtures

25-Aug-2004 (by Champion)
    Make constructors handle null values better
    Integrate multiple constructors so default usage is cleaner
    Move Default struct into each class (get rid of Def.cs)
    extensive additions to unittest

23-Aug-2004 (by Champion)
    Fix NaN handling so it doesn't cause exceptions

18-Aug-2004 (by Vos)
    Add Image property
    Add ColorSymbolRotator
    
17-Aug-2004 (by Champion)
    Fix overlapping labels logic for X vs Y axes
    Fix scaleFormat in copy constuctor
    Add Point indexer to CurveItem
    Fix problem with recursive loop for text label calcs

25-Jul-2004 (by Champion)
    Add XTargetSteps, YTargetSteps
    New Format for 10 power log scale labels
    Fixed drawing of log scales
    Improved logic for scale picking
    Add logic to reduce text labels if they are overlapping
    Added IsIgnoreMissing
    Added IsFontsScaled
    Fixed FindNearestPoint() for bars
    
16-Jul-2004 (by Vos)
    Add PointPair, PointPairList storage for data points

15-Jul-2004
    Add Author/Revision XML tags
    
14-Jul-2004
    Added LGPL

13-Jul-2004 (Release 1.5)
    Added AxisType.Ordinal 
    Added Def.Ax.MaxTextLabels and made Text labels honor the Axis.Step setting 
    Added GraphPane.IsFontsScaled 
    Added GraphPane.BaseDPI for proper printer scaling 
    Fixed broken logarithmic scales 
    Fixed roundoff problems that caused minor cosmetic annoyances 
    Fixed bad rendering of Y2 axis grid and tics 
    Fixed zeroline flag 
    Bars now work properly with XAxis.IsReverse and FindNearestPoint() 
    Fixed other minor bugs 

10-Jun-2004 (Release 1.4)
    Added Bar Charts 
    Added FindNearestPoint() method 
    Minor Bug Fixes 
    Added zero-line when axis ranges from negative to positive 
    Added ScaleFormatAuto property so the ScaleFormat can be manual even when the scale range is auto 
    Added IsAxisRectAuto property so the AxisRect can be set manually 

1-Mar-2004 (Release 1.3)
    Added Date-Time Axis capability 
    Added Text Axis capability 
    Added ReverseTransform() function (returns axis values associated with a mousePt location on the graph) 
    Made some optimizations that dramatically increase the drawing speed for large datasets 
    Updated code to implement ICloneable interface and copy constructor for primary classes 
    Updated axis label code so that axis edge does not have to begin with a label (ex: axis min is 175, but first label is 200 and step is 50) 
    (Only the ZedGraphControl source file has changed) 

28-Nov-2003 (Release 1.2)
    Fixed the Axis.IsMinorOppositeTic bug (it wasn't working) 
    Changed over the ZedGraph code so that it can also be a UserControl 

13-Nov-2003 (Release 1.1)
    Fixed a minor bug in FontSpec.BoundingBox() calculation