Strange behaviour on Openserver 5.0.2 after 09/2015 Post: 302957113

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qwtscaletransformation

QwtScaleTransformation(3)					 Qwt User's Guide					 QwtScaleTransformation(3)

NAME

       QwtScaleTransformation -

       Operations for linear or logarithmic (base 10) transformations.

SYNOPSIS

       #include <qwt_scale_map.h>

   Public Types
       enum Type { Linear, Log10, Other }

   Public Member Functions
       virtual QwtScaleTransformation * copy () const
       virtual double invXForm (double x, double p1, double p2, double s1, double s2) const
       QwtScaleTransformation (Type type)
       Type type () const
       virtual double xForm (double x, double s1, double s2, double p1, double p2) const
       virtual ~QwtScaleTransformation ()

Detailed Description
       Operations for linear or logarithmic (base 10) transformations.

Constructor &; Destructor Documentation
   QwtScaleTransformation::QwtScaleTransformation (Typetype)
       Constructor for a linear transformation.

   QwtScaleTransformation::~QwtScaleTransformation () [virtual]
       Destructor.

Member Function Documentation
   QwtScaleTransformation * QwtScaleTransformation::copy () const [virtual]
       Create a clone of the transformation.

   double QwtScaleTransformation::invXForm (doublep, doublep1, doublep2, doubles1, doubles2) const [virtual]
       Transform a value from the coordinate system of the paint device into the coordinate system of a scale. Parameters:
	   p Value related to the coordinate system of the paint device
	   p1 First border of the coordinate system of the paint device
	   p2 Second border of the coordinate system of the paint device
	   s1 First border of the coordinate system of the scale
	   s2 Second border of the coordinate system of the scale

       Returns:

	   linear mapping:
	       s1 + ( s2 - s1 ) / ( p2 - p1 ) * ( p - p1 );

	   log10 mapping:
	       exp((p - p1) / (p2 - p1) * log(s2 / s1)) * s1;

   QwtScaleTransformation::Type QwtScaleTransformation::type () const [inline] Returns:
	   Transformation type

   double QwtScaleTransformation::xForm (doubles, doubles1, doubles2, doublep1, doublep2) const [virtual]
       Transform a value from the coordinate system of a scale into the coordinate system of the paint device. Parameters:
	   s Value related to the coordinate system of the scale
	   s1 First border of the coordinate system of the scale
	   s2 Second border of the coordinate system of the scale
	   p1 First border of the coordinate system of the paint device
	   p2 Second border of the coordinate system of the paint device

       Returns:

	   linear mapping:
	       p1 + (p2 - p1) / (s2 - s1) * (s - s1);

	   log10 mapping:
	       p1 + (p2 - p1) / log(s2 / s1) * log(s / s1);

Author
       Generated automatically by Doxygen for Qwt User's Guide from the source code.

Version 5.2.2							  Mon Aug 1 2011					 QwtScaleTransformation(3)