04-01-2008
Might want to rethink the original request.
How would you interpret 2008111
is it january 11th or November 1st.
fortunately the awk statment could be modified to handle converting to
20080111 or 20081101 - respectively.
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LEARN ABOUT DEBIAN
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)