/// <summary> /// Select a reasonable ordinal axis scale given a range of data values, with the expectation that /// dates will be displayed. /// </summary> /// <remarks> /// This method only applies to <see cref="AxisType.DateAsOrdinal"/> type axes, and it /// is called by the general <see cref="PickScale"/> method. For this type, /// the first curve is the "master", which contains the dates to be applied. /// <para>On Exit:</para> /// <para><see cref="Scale.Min"/> is set to scale minimum (if <see cref="Scale.MinAuto"/> = true)</para> /// <para><see cref="Scale.Max"/> is set to scale maximum (if <see cref="Scale.MaxAuto"/> = true)</para> /// <para><see cref="Scale.MajorStep"/> is set to scale step size (if <see cref="Scale.MajorStepAuto"/> = true)</para> /// <para><see cref="Scale.MinorStep"/> is set to scale minor step size (if <see cref="Scale.MinorStepAuto"/> = true)</para> /// <para><see cref="Scale.Mag"/> is set to a magnitude multiplier according to the data</para> /// <para><see cref="Scale.Format"/> is set to the display format for the values (this controls the /// number of decimal places, whether there are thousands separators, currency types, etc.)</para> /// </remarks> /// <param name="pane">A reference to the <see cref="GraphPane"/> object /// associated with this <see cref="Axis"/></param> /// <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="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> /// <seealso cref="PickScale"/> /// <seealso cref="AxisType.Ordinal"/> override public void PickScale(GraphPane pane, Graphics g, float scaleFactor) { // call the base class first base.PickScale(pane, g, scaleFactor); /* // First, get the date ranges from the first curve in the list * double xMin; // = Double.MaxValue; * double xMax; // = Double.MinValue; * double yMin; // = Double.MaxValue; * double yMax; // = Double.MinValue; * double range = 1; * * foreach ( CurveItem curve in pane.CurveList ) * { * if ( ( _ownerAxis is Y2Axis && curve.IsY2Axis ) || * ( _ownerAxis is YAxis && !curve.IsY2Axis ) || * ( _ownerAxis is X2Axis && curve.IsX2Axis ) || * ( _ownerAxis is XAxis && !curve.IsX2Axis ) ) * { * curve.GetRange( out xMin, out xMax, out yMin, out yMax, false, pane.IsBoundedRanges, pane ); * if ( _ownerAxis is XAxis || _ownerAxis is X2Axis ) * range = xMax - xMin; * else * range = yMax - yMin; * } * } */ // Set the DateFormat by calling CalcDateStepSize // DateScale.CalcDateStepSize( range, Default.TargetXSteps, this ); SetDateFormat(pane); // Now, set the axis range based on a ordinal scale base.PickScale(pane, g, scaleFactor); OrdinalScale.PickScale(pane, g, scaleFactor, this); }
/// <summary> /// Select a reasonable ordinal axis scale given a range of data values, with the expectation that /// linear values will be displayed. /// </summary> /// <remarks> /// This method only applies to <see cref="AxisType.DateAsOrdinal"/> type axes, and it /// is called by the general <see cref="Scale.PickScale"/> method. For this type, /// the first curve is the "master", which contains the dates to be applied. /// <para>On Exit:</para> /// <para><see cref="Scale.Min"/> is set to scale minimum (if <see cref="Scale.MinAuto"/> = true)</para> /// <para><see cref="Scale.Max"/> is set to scale maximum (if <see cref="Scale.MaxAuto"/> = true)</para> /// <para><see cref="Scale.MajorStep"/> is set to scale step size (if <see cref="Scale.MajorStepAuto"/> = true)</para> /// <para><see cref="Scale.MinorStep"/> is set to scale minor step size (if <see cref="Scale.MinorStepAuto"/> = true)</para> /// <para><see cref="Scale.Mag"/> is set to a magnitude multiplier according to the data</para> /// <para><see cref="Scale.Format"/> is set to the display format for the values (this controls the /// number of decimal places, whether there are thousands separators, currency types, etc.)</para> /// </remarks> /// <param name="pane">A reference to the <see cref="GraphPane"/> object /// associated with this <see cref="Axis"/></param> /// <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="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> /// <seealso cref="PickScale"/> /// <seealso cref="AxisType.Ordinal"/> override public void PickScale(GraphPane pane, Graphics g, float scaleFactor) { // call the base class first base.PickScale(pane, g, scaleFactor); // First, get the date ranges from the first curve in the list double xMin; // = Double.MaxValue; double xMax; // = Double.MinValue; double yMin; // = Double.MaxValue; double yMax; // = Double.MinValue; double tMin = 0; double tMax = 1; foreach (CurveItem curve in pane.CurveList) { if ((_ownerAxis is Y2Axis && curve.IsY2Axis) || (_ownerAxis is YAxis && !curve.IsY2Axis) || (_ownerAxis is X2Axis && curve.IsX2Axis) || (_ownerAxis is XAxis && !curve.IsX2Axis)) { curve.GetRange(out xMin, out xMax, out yMin, out yMax, false, false, pane); if (_ownerAxis is XAxis || _ownerAxis is X2Axis) { tMin = xMin; tMax = xMax; } else { tMin = yMin; tMax = yMax; } } } double range = Math.Abs(tMax - tMin); // Now, set the axis range based on a ordinal scale base.PickScale(pane, g, scaleFactor); OrdinalScale.PickScale(pane, g, scaleFactor, this); SetScaleMag(tMin, tMax, range / Default.TargetXSteps); }