ExportAlignLog Class Reference

Pick first simplest x value between specified min and max, for log scaling. More...

#include <ExportAlignLog.h>

Collaboration diagram for ExportAlignLog:

Public Member Functions
	ExportAlignLog (double xMin, double xMax)
	Single constructor. More...
double	firstSimplestNumber () const
	Result. More...

Detailed Description

Pick first simplest x value between specified min and max, for log scaling.

A simplest value is defined here as one having the smallest number of significant digits when log value is taken, and is used for aligning periodic values on simple numbers. Examples:

1. 0.9 to 2, result is 1 which is 10^0
2. 1.1 to 9, result is sqrt(10) which is midway between 1 and 10 in log scale, and equal to 10^0.5
3. 9.81 to 9.93, result is 10^0.992 since 9.81=10^0.99166 and 9.93=10^0.9969

Definition at line 17 of file ExportAlignLog.h.

Constructor & Destructor Documentation

ExportAlignLog()

ExportAlignLog::ExportAlignLog	(	double	xMin,
		double	xMax
	)

Single constructor.

Definition at line 11 of file ExportAlignLog.cpp.

{
  // Convert log numbers to linear numbers
  double xMinLog = log10 (xMin);
  double xMaxLog = log10 (xMax);

  ExportAlignLinear alignLinear (xMinLog,
                                 xMaxLog);

  // Convert result back to log numbers
  m_firstSimplestNumber = qPow (10.0, alignLinear.firstSimplestNumber ());
}

Member Function Documentation

firstSimplestNumber()

double ExportAlignLog::firstSimplestNumber

(

)

const

Result.

Definition at line 25 of file ExportAlignLog.cpp.

{
  return m_firstSimplestNumber;
}

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The documentation for this class was generated from the following files:

• Export/ExportAlignLog.h
• Export/ExportAlignLog.cpp