/// <summary>
/// Calculates a suggested axis for the DataRowCollection data.
/// </summary>
/// <returns>the suggested axis</returns>
public Axis Get()
{
double t_min = double.MaxValue;
double t_max = double.MinValue;
IEnumerator en = rows_[0].Table.Columns.GetEnumerator();
while (en.MoveNext())
{
string colName = ((DataColumn)en.Current).Caption;
if (colName == abscissaName_)
{
continue;
}
double min;
double max;
if (Utils.RowArrayMinMax(rows_, out min, out max, colName))
{
if (min < t_min)
{
t_min = min;
}
if (max > t_max)
{
t_max = max;
}
}
}
return(new LinearAxis(t_min, t_max));
}
/// <summary>
/// Calculates a suggested axis given the data specified in the constructor.
/// </summary>
/// <returns>the suggested axis</returns>
public Axis Get()
{
double min;
double max;
if (Utils.RowArrayMinMax(rows_, out min, out max, columnName_))
{
if ((rows_[0])[columnName_] is DateTime)
{
return(new DateTimeAxis(min, max));
}
else
{
return(new LinearAxis(min, max));
}
}
return(new LinearAxis(0.0, 1.0));
}
/// <summary>
/// Returns a y-axis that is suitable for drawing the data.
/// </summary>
/// <returns>A suitable y-axis.</returns>
public Axis SuggestYAxis()
{
double min_l;
double max_l;
double min_h;
double max_h;
if (this.rows_ == null)
{
Utils.ArrayMinMax((System.Collections.IList)lowData_, out min_l, out max_l);
Utils.ArrayMinMax((System.Collections.IList)highData_, out min_h, out max_h);
}
else
{
Utils.RowArrayMinMax(this.rows_, out min_l, out max_l, (string)this.lowData_);
Utils.RowArrayMinMax(this.rows_, out min_h, out max_h, (string)this.highData_);
}
Axis a = new LinearAxis(min_l, max_h);
a.IncreaseRange(0.08);
return(a);
}
/// <summary>
/// Returns an x-axis that is suitable for drawing the data.
/// </summary>
/// <returns>A suitable x-axis.</returns>
public Axis SuggestXAxis()
{
double min;
double max;
double minStep = 0.0;
if (this.rows_ == null)
{
Utils.ArrayMinMax((System.Collections.IList) this.abscissaData_, out min, out max);
if (((System.Collections.IList)abscissaData_).Count > 1)
{
double first = Utils.ToDouble(((Array)abscissaData_).GetValue(0));
double second = Utils.ToDouble(((Array)abscissaData_).GetValue(1));
minStep = Math.Abs(second - first);
}
if (((System.Collections.IList)abscissaData_).Count > 2)
{
double first = Utils.ToDouble(((Array)abscissaData_).GetValue(1));
double second = Utils.ToDouble(((Array)abscissaData_).GetValue(2));
if (Math.Abs(second - first) < minStep)
{
minStep = Math.Abs(second - first);
}
}
if (((System.Collections.IList)abscissaData_)[0] is DateTime)
{
return(new DateTimeAxis(min - minStep / 2.0, max + minStep / 2.0));
}
else
{
return(new LinearAxis(min - minStep / 2.0, max + minStep / 2.0));
}
}
else
{
Utils.RowArrayMinMax(this.rows_, out min, out max, (string)this.abscissaData_);
if (rows_.Count > 1)
{
double first = Utils.ToDouble(rows_[0][(string)abscissaData_]);
double second = Utils.ToDouble(rows_[1][(string)abscissaData_]);
minStep = Math.Abs(second - first);
}
if (rows_.Count > 2)
{
double first = Utils.ToDouble(rows_[1][(string)abscissaData_]);
double second = Utils.ToDouble(rows_[2][(string)abscissaData_]);
if (Math.Abs(second - first) < minStep)
{
minStep = Math.Abs(second - first);
}
}
if ((rows_[0])[(string)abscissaData_] is DateTime)
{
return(new DateTimeAxis(min - minStep / 2.0, max + minStep / 2.0));
}
else
{
return(new LinearAxis(min - minStep / 2.0, max + minStep / 2.0));
}
}
}