/// <summary>
/// Construct a <see cref="ScaleState"/> from the specified <see cref="Axis"/>
/// </summary>
/// <param name="axis">The <see cref="Axis"/> from which to collect the scale
/// range settings.</param>
public ScaleState( Axis axis )
{
_min = axis._scale._min;
_minorStep = axis._scale._minorStep;
_majorStep = axis._scale._majorStep;
_max = axis._scale._max;
_majorUnit = axis._scale._majorUnit;
_minorUnit = axis._scale._minorUnit;
_format = axis._scale._format;
_mag = axis._scale._mag;
//this.numDec = axis.NumDec;
_minAuto = axis._scale._minAuto;
_majorStepAuto = axis._scale._majorStepAuto;
_minorStepAuto = axis._scale._minorStepAuto;
_maxAuto = axis._scale._maxAuto;
_formatAuto = axis._scale._formatAuto;
_magAuto = axis._scale._magAuto;
}
/// <summary>
/// The Copy Constructor.
/// </summary>
/// <param name="rhs">The Axis object from which to copy</param>
public Axis( Axis rhs )
{
_scale = rhs._scale.Clone( this );
_cross = rhs._cross;
_crossAuto = rhs._crossAuto;
_majorTic = rhs.MajorTic.Clone();
_minorTic = rhs.MinorTic.Clone();
_majorGrid = rhs._majorGrid.Clone();
_minorGrid = rhs._minorGrid.Clone();
_isVisible = rhs.IsVisible;
_isAxisSegmentVisible = rhs._isAxisSegmentVisible;
_title = (AxisLabel) rhs.Title.Clone();
_axisGap = rhs._axisGap;
_minSpace = rhs.MinSpace;
_color = rhs.Color;
}
/// <summary>
/// The Copy Constructor
/// </summary>
/// <param name="rhs">The <see cref="LinearScale" /> object from which to copy</param>
/// <param name="owner">The <see cref="Axis" /> object that will own the
/// new instance of <see cref="LinearScale" /></param>
public LinearScale( Scale rhs, Axis owner )
: base(rhs, owner)
{
}
/// <summary>
/// Create a new clone of the current item, with a new owner assignment
/// </summary>
/// <param name="owner">The new <see cref="Axis" /> instance that will be
/// the owner of the new Scale</param>
/// <returns>A new <see cref="Scale" /> clone.</returns>
public override Scale Clone( Axis owner )
{
return new LinearScale( this, owner );
}
public TextScale( Axis owner )
: base(owner)
{
}
private void SetSpace( Axis axis, float clientSize, ref float spaceNorm, ref float spaceAlt )
{
//spaceNorm = 0;
//spaceAlt = 0;
float crossFrac = axis.CalcCrossFraction( this );
float crossPix = crossFrac * ( 1 + crossFrac ) * ( 1 + crossFrac * crossFrac ) * clientSize;
if ( !axis.IsPrimary( this ) && axis.IsCrossShifted( this ) )
axis._tmpSpace = 0;
if ( axis._tmpSpace < crossPix )
axis._tmpSpace = 0;
else if ( crossPix > 0 )
axis._tmpSpace -= crossPix;
if ( axis._scale._isLabelsInside && ( axis.IsPrimary( this ) || ( crossFrac != 0.0 && crossFrac != 1.0 ) ) )
spaceAlt = axis._tmpSpace;
else
spaceNorm = axis._tmpSpace;
}
/// <summary>
/// The Copy Constructor
/// </summary>
/// <param name="rhs">The <see cref="DateScale" /> object from which to copy</param>
/// <param name="owner">The <see cref="Axis" /> object that will own the
/// new instance of <see cref="DateScale" /></param>
public DateScale( Scale rhs, Axis owner )
: base(rhs, owner)
{
}
/// <summary>
/// The Copy Constructor
/// </summary>
/// <param name="rhs">The <see cref="DateAsOrdinalScale" /> object from which to copy</param>
/// <param name="owner">The <see cref="Axis" /> object that will own the
/// new instance of <see cref="DateAsOrdinalScale" /></param>
public DateAsOrdinalScale( Scale rhs, Axis owner )
: base(rhs, owner)
{
}
/// <summary>
/// Setup some temporary transform values in preparation for rendering the
/// <see cref="Axis"/>.
/// </summary>
/// <remarks>
/// This method is typically called by the parent <see cref="GraphPane"/>
/// object as part of the <see cref="GraphPane.Draw"/> method. It is also
/// called by <see cref="GraphPane.GeneralTransform(double,double,CoordType)"/> and
/// <see cref="GraphPane.ReverseTransform( PointF, out double, out double )"/>
/// methods to setup for coordinate transformations.
/// </remarks>
/// <param name="pane">
/// A reference to the <see cref="GraphPane"/> object that is the parent or
/// owner of this object.
/// </param>
/// <param name="axis">
/// The parent <see cref="Axis" /> for this <see cref="Scale" />
/// </param>
public virtual void SetupScaleData( GraphPane pane, Axis axis )
{
// save the ChartRect data for transforming scale values to pixels
if ( axis is XAxis || axis is X2Axis )
{
_minPix = pane.Chart._rect.Left;
_maxPix = pane.Chart._rect.Right;
}
else
{
_minPix = pane.Chart._rect.Top;
_maxPix = pane.Chart._rect.Bottom;
}
_minLinTemp = Linearize( _min );
_maxLinTemp = Linearize( _max );
}
/// <summary> /// Create a new clone of the current item, with a new owner assignment /// </summary> /// <param name="owner">The new <see cref="Axis" /> instance that will be /// the owner of the new Scale</param> /// <returns>A new <see cref="Scale" /> clone.</returns> public abstract Scale Clone( Axis owner );
/// <summary>
/// Draw all the <see cref="JapaneseCandleStick"/>'s to the specified <see cref="Graphics"/>
/// device as a candlestick at each defined point.
/// </summary>
/// <param name="g">
/// A graphic device object to be drawn into. This is normally e.Graphics from the
/// PaintEventArgs argument to the Paint() method.
/// </param>
/// <param name="pane">
/// A reference to the <see cref="GraphPane"/> object that is the parent or
/// owner of this object.
/// </param>
/// <param name="curve">A <see cref="JapaneseCandleStickItem"/> object representing the
/// <see cref="JapaneseCandleStick"/>'s to be drawn.</param>
/// <param name="baseAxis">The <see cref="Axis"/> class instance that defines the base (independent)
/// axis for the <see cref="JapaneseCandleStick"/></param>
/// <param name="valueAxis">The <see cref="Axis"/> class instance that defines the value (dependent)
/// axis for the <see cref="JapaneseCandleStick"/></param>
/// <param name="scaleFactor">
/// The scaling factor to be used for rendering objects. This is calculated and
/// passed down by the parent <see cref="GraphPane"/> object using the
/// <see cref="PaneBase.CalcScaleFactor"/> method, and is used to proportionally adjust
/// font sizes, etc. according to the actual size of the graph.
/// </param>
public void Draw( Graphics g, GraphPane pane, JapaneseCandleStickItem curve,
Axis baseAxis, Axis valueAxis, float scaleFactor )
{
//ValueHandler valueHandler = new ValueHandler( pane, false );
float pixBase, pixHigh, pixLow, pixOpen, pixClose;
if ( curve.Points != null )
{
//float halfSize = _size * scaleFactor;
float halfSize = GetBarWidth( pane, baseAxis, scaleFactor );
Color tColor = _color;
Color tFallingColor = _fallingColor;
float tPenWidth = _width;
Fill tRisingFill = _risingFill;
Fill tFallingFill = _fallingFill;
Border tRisingBorder = _risingBorder;
Border tFallingBorder = _fallingBorder;
if ( curve.IsSelected )
{
tColor = Selection.Border.Color;
tFallingColor = Selection.Border.Color;
tPenWidth = Selection.Border.Width;
tRisingFill = Selection.Fill;
tFallingFill = Selection.Fill;
tRisingBorder = Selection.Border;
tFallingBorder = Selection.Border;
}
using ( Pen risingPen = new Pen( tColor, tPenWidth ) )
using ( Pen fallingPen = new Pen( tFallingColor, tPenWidth ) )
{
// Loop over each defined point
for ( int i = 0; i < curve.Points.Count; i++ )
{
PointPair pt = curve.Points[i];
double date = pt.X;
double high = pt.Y;
double low = pt.Z;
double open = PointPair.Missing;
double close = PointPair.Missing;
if ( pt is StockPt )
{
open = ( pt as StockPt ).Open;
close = ( pt as StockPt ).Close;
}
// Any value set to double max is invalid and should be skipped
// This is used for calculated values that are out of range, divide
// by zero, etc.
// Also, any value <= zero on a log scale is invalid
if ( !curve.Points[i].IsInvalid3D &&
( date > 0 || !baseAxis._scale.IsLog ) &&
( ( high > 0 && low > 0 ) || !valueAxis._scale.IsLog ) )
{
pixBase = (int) ( baseAxis.Scale.Transform( curve.IsOverrideOrdinal, i, date ) + 0.5 );
//pixBase = baseAxis.Scale.Transform( curve.IsOverrideOrdinal, i, date );
pixHigh = valueAxis.Scale.Transform( curve.IsOverrideOrdinal, i, high );
pixLow = valueAxis.Scale.Transform( curve.IsOverrideOrdinal, i, low );
if ( PointPair.IsValueInvalid( open ) )
pixOpen = Single.MaxValue;
else
pixOpen = valueAxis.Scale.Transform( curve.IsOverrideOrdinal, i, open );
if ( PointPair.IsValueInvalid( close ) )
pixClose = Single.MaxValue;
else
pixClose = valueAxis.Scale.Transform( curve.IsOverrideOrdinal, i, close );
if ( !curve.IsSelected && this._gradientFill.IsGradientValueType )
{
using ( Pen tPen = GetPen( pane, scaleFactor, pt ) )
Draw( g, pane, baseAxis is XAxis || baseAxis is X2Axis,
pixBase, pixHigh, pixLow, pixOpen,
pixClose, halfSize, scaleFactor,
( tPen ),
( close > open ? tRisingFill : tFallingFill ),
( close > open ? tRisingBorder : tFallingBorder ), pt );
}
else
Draw( g, pane, baseAxis is XAxis || baseAxis is X2Axis,
pixBase, pixHigh, pixLow, pixOpen,
pixClose, halfSize, scaleFactor,
( close > open ? risingPen : fallingPen ),
( close > open ? tRisingFill : tFallingFill ),
( close > open ? tRisingBorder : tFallingBorder ), pt );
}
}
}
}
}
/// <summary>
/// Determine the minimum increment between individual points to be used for
/// calculating a bar size that fits without overlapping
/// </summary>
/// <param name="list">The <see cref="IPointList" /> list of points for the bar
/// of interest</param>
/// <param name="baseAxis">The base axis for the bar</param>
/// <returns>The minimum increment between bars along the base axis</returns>
internal static double GetMinStepSize( IPointList list, Axis baseAxis )
{
double minStep = Double.MaxValue;
if ( list.Count <= 0 || baseAxis._scale.IsAnyOrdinal )
return 1.0;
PointPair lastPt = list[0];
for ( int i = 1; i < list.Count; i++ )
{
PointPair pt = list[i];
if ( !pt.IsInvalid || !lastPt.IsInvalid )
{
double step;
if ( baseAxis is XAxis || baseAxis is X2Axis )
step = pt.X - lastPt.X;
else
step = pt.Y - lastPt.Y;
if ( step > 0 && step < minStep )
minStep = step;
}
lastPt = pt;
}
double range = baseAxis.Scale._maxLinearized - baseAxis.Scale._minLinearized;
if ( range <= 0 )
minStep = 1.0;
else if ( minStep <= 0 || minStep < 0.001 * range || minStep > range )
minStep = 0.1 * range;
return minStep;
}
/// <summary>
/// The Copy Constructor
/// </summary>
/// <param name="rhs">The <see cref="ExponentScale" /> object from which to copy</param>
/// <param name="owner">The <see cref="Axis" /> object that will own the
/// new instance of <see cref="ExponentScale" /></param>
public ExponentScale( Scale rhs, Axis owner )
: base(rhs, owner)
{
}
/// <summary>
/// Default constructor that defines the owner <see cref="Axis" />
/// (containing object) for this new object.
/// </summary>
/// <param name="owner">The owner, or containing object, of this instance</param>
public ExponentScale( Axis owner )
: base(owner)
{
}
/// <summary>
/// Setup some temporary transform values in preparation for rendering the <see cref="Axis"/>.
/// </summary>
/// <remarks>
/// This method is typically called by the parent <see cref="GraphPane"/>
/// object as part of the <see cref="GraphPane.Draw"/> method. It is also
/// called by <see cref="GraphPane.GeneralTransform(double,double,CoordType)"/> and
/// <see cref="GraphPane.ReverseTransform( PointF, out double, out double )"/>
/// methods to setup for coordinate transformations.
/// </remarks>
/// <param name="pane">
/// A reference to the <see cref="GraphPane"/> object that is the parent or
/// owner of this object.
/// </param>
/// <param name="axis">
/// The parent <see cref="Axis" /> for this <see cref="Scale" />
/// </param>
public override void SetupScaleData( GraphPane pane, Axis axis )
{
base.SetupScaleData( pane, axis );
if ( _exponent > 0 )
{
_minLinTemp = Linearize( _min );
_maxLinTemp = Linearize( _max );
}
else if ( _exponent < 0 )
{
_minLinTemp = Linearize( _max );
_maxLinTemp = Linearize( _min );
}
}
/// <summary>
/// Create a new clone of the current item, with a new owner assignment
/// </summary>
/// <param name="owner">The new <see cref="Axis" /> instance that will be
/// the owner of the new Scale</param>
/// <returns>A new <see cref="Scale" /> clone.</returns>
public override Scale Clone( Axis owner )
{
return new DateAsOrdinalScale( this, owner );
}
/// <summary>
/// Default constructor that defines the owner <see cref="Axis" />
/// (containing object) for this new object.
/// </summary>
/// <param name="owner">The owner, or containing object, of this instance</param>
public DateAsOrdinalScale( Axis owner )
: base(owner)
{
}
/// <summary>
/// Basic constructor -- requires that the <see cref="Scale" /> object be intialized with
/// a pre-existing owner <see cref="Axis" />.
/// </summary>
/// <param name="ownerAxis">The <see cref="Axis" /> object that is the owner of this
/// <see cref="Scale" /> instance.</param>
public Scale( Axis ownerAxis )
{
_ownerAxis = ownerAxis;
_min = 0.0;
_max = 1.0;
_majorStep = 0.1;
_minorStep = 0.1;
_exponent = 1.0;
_mag = 0;
_baseTic = PointPair.Missing;
_minGrace = Default.MinGrace;
_maxGrace = Default.MaxGrace;
_minAuto = true;
_maxAuto = true;
_majorStepAuto = true;
_minorStepAuto = true;
_magAuto = true;
_formatAuto = true;
_isReverse = Default.IsReverse;
_isUseTenPower = true;
_isPreventLabelOverlap = true;
_isVisible = true;
_isSkipFirstLabel = false;
_isSkipLastLabel = false;
_isSkipCrossLabel = false;
_majorUnit = DateUnit.Day;
_minorUnit = DateUnit.Day;
_format = null;
_textLabels = null;
_isLabelsInside = Default.IsLabelsInside;
_align = Default.Align;
_alignH = Default.AlignH;
_fontSpec = new FontSpec(
Default.FontFamily, Default.FontSize,
Default.FontColor, Default.FontBold,
Default.FontUnderline, Default.FontItalic,
Default.FillColor, Default.FillBrush,
Default.FillType );
_fontSpec.Border.IsVisible = false;
_labelGap = Default.LabelGap;
}
/// <summary>
/// Default constructor that defines the owner <see cref="Axis" />
/// (containing object) for this new object.
/// </summary>
/// <param name="owner">The owner, or containing object, of this instance</param>
public DateScale( Axis owner )
: base(owner)
{
}
/// <summary>
/// Define suitable default ranges for an axis in the event that
/// no data were available
/// </summary>
/// <param name="pane">The <see cref="GraphPane"/> of interest</param>
/// <param name="axis">The <see cref="Axis"/> for which to set the range</param>
internal void SetRange( GraphPane pane, Axis axis )
{
if ( _rangeMin >= Double.MaxValue || _rangeMax <= Double.MinValue )
{
// If this is a Y axis, and the main Y axis is valid, use it for defaults
if ( axis != pane.XAxis && axis != pane.X2Axis &&
pane.YAxis.Scale._rangeMin < double.MaxValue && pane.YAxis.Scale._rangeMax > double.MinValue )
{
_rangeMin = pane.YAxis.Scale._rangeMin;
_rangeMax = pane.YAxis.Scale._rangeMax;
}
// Otherwise, if this is a Y axis, and the main Y2 axis is valid, use it for defaults
else if ( axis != pane.XAxis && axis != pane.X2Axis &&
pane.Y2Axis.Scale._rangeMin < double.MaxValue && pane.Y2Axis.Scale._rangeMax > double.MinValue )
{
_rangeMin = pane.Y2Axis.Scale._rangeMin;
_rangeMax = pane.Y2Axis.Scale._rangeMax;
}
// Otherwise, just use 0 and 1
else
{
_rangeMin = 0;
_rangeMax = 1;
}
}
}
private void ForceNumTics( Axis axis, int numTics )
{
if ( axis._scale.MaxAuto )
{
int nTics = axis._scale.CalcNumTics();
if ( nTics < numTics )
axis._scale._maxLinearized += axis._scale._majorStep * ( numTics - nTics );
}
}
/// <summary>
/// Copy Constructor. Create a new <see cref="Scale" /> object based on the specified
/// existing one.
/// </summary>
/// <param name="rhs">The <see cref="Scale" /> object to be copied.</param>
/// <param name="owner">The <see cref="Axis" /> object that will own the
/// new instance of <see cref="Scale" /></param>
public Scale( Scale rhs, Axis owner )
{
_ownerAxis = owner;
_min = rhs._min;
_max = rhs._max;
_majorStep = rhs._majorStep;
_minorStep = rhs._minorStep;
_exponent = rhs._exponent;
_baseTic = rhs._baseTic;
_minAuto = rhs._minAuto;
_maxAuto = rhs._maxAuto;
_majorStepAuto = rhs._majorStepAuto;
_minorStepAuto = rhs._minorStepAuto;
_magAuto = rhs._magAuto;
_formatAuto = rhs._formatAuto;
_minGrace = rhs._minGrace;
_maxGrace = rhs._maxGrace;
_mag = rhs._mag;
_isUseTenPower = rhs._isUseTenPower;
_isReverse = rhs._isReverse;
_isPreventLabelOverlap = rhs._isPreventLabelOverlap;
_isVisible = rhs._isVisible;
_isSkipFirstLabel = rhs._isSkipFirstLabel;
_isSkipLastLabel = rhs._isSkipLastLabel;
_isSkipCrossLabel = rhs._isSkipCrossLabel;
_majorUnit = rhs._majorUnit;
_minorUnit = rhs._minorUnit;
_format = rhs._format;
_isLabelsInside = rhs._isLabelsInside;
_align = rhs._align;
_alignH = rhs._alignH;
_fontSpec = (FontSpec) rhs._fontSpec.Clone();
_labelGap = rhs._labelGap;
if ( rhs._textLabels != null )
_textLabels = (string[])rhs._textLabels.Clone();
else
_textLabels = null;
}
/// <summary>
/// Create a new clone of the current item, with a new owner assignment
/// </summary>
/// <param name="owner">The new <see cref="Axis" /> instance that will be
/// the owner of the new Scale</param>
/// <returns>A new <see cref="Scale" /> clone.</returns>
public override Scale Clone( Axis owner )
{
return new TextScale( this, owner );
}
/// <summary>
/// Default constructor that defines the owner <see cref="Axis" />
/// (containing object) for this new object.
/// </summary>
/// <param name="owner">The owner, or containing object, of this instance</param>
public OrdinalScale( Axis owner )
: base(owner)
{
}
/// <summary>
/// The Copy Constructor
/// </summary>
/// <param name="rhs">The <see cref="TextScale" /> object from which to copy</param>
/// <param name="owner">The <see cref="Axis" /> object that will own the
/// new instance of <see cref="TextScale" /></param>
public TextScale( Scale rhs, Axis owner )
: base(rhs, owner)
{
}
/// <summary>
/// Setup some temporary transform values in preparation for rendering the <see cref="Axis"/>.
/// </summary>
/// <remarks>
/// This method is typically called by the parent <see cref="GraphPane"/>
/// object as part of the <see cref="GraphPane.Draw"/> method. It is also
/// called by <see cref="GraphPane.GeneralTransform(double,double,CoordType)"/> and
/// <see cref="GraphPane.ReverseTransform( PointF, out double, out double )"/>
/// methods to setup for coordinate transformations.
/// </remarks>
/// <param name="pane">
/// A reference to the <see cref="GraphPane"/> object that is the parent or
/// owner of this object.
/// </param>
/// <param name="axis">
/// The parent <see cref="Axis" /> for this <see cref="Scale" />
/// </param>
public override void SetupScaleData( GraphPane pane, Axis axis )
{
base.SetupScaleData( pane, axis );
_minLinTemp = Linearize( _min );
_maxLinTemp = Linearize( _max );
}
/// <summary>
/// Default constructor that defines the owner <see cref="Axis" />
/// (containing object) for this new object.
/// </summary>
/// <param name="owner">The owner, or containing object, of this instance</param>
public LinearScale( Axis owner )
: base(owner)
{
}
/// <summary>
/// Default constructor that defines the owner <see cref="Axis" />
/// (containing object) for this new object.
/// </summary>
/// <param name="owner">The owner, or containing object, of this instance</param>
public LogScale( Axis owner )
: base(owner)
{
}
/// <summary>
/// Draw all the <see cref="ErrorBar"/>'s to the specified <see cref="Graphics"/>
/// device as a an error bar at each defined point.
/// </summary>
/// <param name="g">
/// A graphic device object to be drawn into. This is normally e.Graphics from the
/// PaintEventArgs argument to the Paint() method.
/// </param>
/// <param name="pane">
/// A reference to the <see cref="GraphPane"/> object that is the parent or
/// owner of this object.
/// </param>
/// <param name="curve">A <see cref="CurveItem"/> object representing the
/// <see cref="Bar"/>'s to be drawn.</param>
/// <param name="baseAxis">The <see cref="Axis"/> class instance that defines the base (independent)
/// axis for the <see cref="Bar"/></param>
/// <param name="valueAxis">The <see cref="Axis"/> class instance that defines the value (dependent)
/// axis for the <see cref="Bar"/></param>
/// <param name="scaleFactor">
/// The scaling factor to be used for rendering objects. This is calculated and
/// passed down by the parent <see cref="GraphPane"/> object using the
/// <see cref="PaneBase.CalcScaleFactor"/> method, and is used to proportionally adjust
/// font sizes, etc. according to the actual size of the graph.
/// </param>
public void Draw( Graphics g, GraphPane pane, ErrorBarItem curve,
Axis baseAxis, Axis valueAxis, float scaleFactor )
{
ValueHandler valueHandler = new ValueHandler( pane, false );
float pixBase, pixValue, pixLowValue;
double scaleBase, scaleValue, scaleLowValue;
if ( curve.Points != null && this.IsVisible )
{
using ( Pen pen = !curve.IsSelected ? new Pen( _color, _penWidth ) :
new Pen( Selection.Border.Color, Selection.Border.Width ) )
{
// Loop over each defined point
for ( int i = 0; i < curve.Points.Count; i++ )
{
valueHandler.GetValues( curve, i, out scaleBase,
out scaleLowValue, out scaleValue );
// Any value set to double max is invalid and should be skipped
// This is used for calculated values that are out of range, divide
// by zero, etc.
// Also, any value <= zero on a log scale is invalid
if ( !curve.Points[i].IsInvalid3D &&
( scaleBase > 0 || !baseAxis._scale.IsLog ) &&
( ( scaleValue > 0 && scaleLowValue > 0 ) || !valueAxis._scale.IsLog ) )
{
pixBase = baseAxis.Scale.Transform( curve.IsOverrideOrdinal, i, scaleBase );
pixValue = valueAxis.Scale.Transform( curve.IsOverrideOrdinal, i, scaleValue );
pixLowValue = valueAxis.Scale.Transform( curve.IsOverrideOrdinal, i, scaleLowValue );
//if ( this.fill.IsGradientValueType )
// brush = fill.MakeBrush( _rect, _points[i] );
this.Draw( g, pane, baseAxis is XAxis || baseAxis is X2Axis, pixBase, pixValue,
pixLowValue, scaleFactor, pen, curve.IsSelected,
curve.Points[i] );
}
}
}
}
}
/// <summary>
/// The Copy Constructor
/// </summary>
/// <param name="rhs">The <see cref="LogScale" /> object from which to copy</param>
/// <param name="owner">The <see cref="Axis" /> object that will own the
/// new instance of <see cref="LogScale" /></param>
public LogScale( Scale rhs, Axis owner )
: base(rhs, owner)
{
}