.TH "QwtPowerTransform" 3 "Wed Jan 2 2019" "Version 6.1.4" "Qwt User's Guide" \" -*- nroff -*-
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.SH NAME
QwtPowerTransform \- A transformation using pow()  

.SH SYNOPSIS
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.PP
.PP
\fC#include <qwt_transform\&.h>\fP
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Inherits \fBQwtTransform\fP\&.
.SS "Public Member Functions"

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.ti -1c
.RI "\fBQwtPowerTransform\fP (double exponent)"
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.RI "virtual \fB~QwtPowerTransform\fP ()"
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.RI "Destructor\&. "
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.RI "virtual double \fBtransform\fP (double value) const"
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.RI "virtual double \fBinvTransform\fP (double value) const"
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.RI "virtual \fBQwtTransform\fP * \fBcopy\fP () const"
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.SH "Detailed Description"
.PP 
A transformation using pow() 

\fBQwtPowerTransform\fP preserves the sign of a value\&. F\&.e\&. a transformation with a factor of 2 transforms a value of -3 to -9 and v\&.v\&. Thus \fBQwtPowerTransform\fP can be used for scales including negative values\&. 
.SH "Constructor & Destructor Documentation"
.PP 
.SS "QwtPowerTransform::QwtPowerTransform (double exponent)"
Constructor 
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\fBParameters:\fP
.RS 4
\fIexponent\fP Exponent 
.RE
.PP

.SH "Member Function Documentation"
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.SS "\fBQwtTransform\fP * QwtPowerTransform::copy () const\fC [virtual]\fP"

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\fBReturns:\fP
.RS 4
Clone of the transformation 
.RE
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.PP
Implements \fBQwtTransform\fP\&.
.SS "double QwtPowerTransform::invTransform (double value) const\fC [virtual]\fP"

.PP
\fBParameters:\fP
.RS 4
\fIvalue\fP Value to be transformed 
.RE
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\fBReturns:\fP
.RS 4
Inverse exponentiation preserving the sign 
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.PP
Implements \fBQwtTransform\fP\&.
.SS "double QwtPowerTransform::transform (double value) const\fC [virtual]\fP"

.PP
\fBParameters:\fP
.RS 4
\fIvalue\fP Value to be transformed 
.RE
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\fBReturns:\fP
.RS 4
Exponentiation preserving the sign 
.RE
.PP

.PP
Implements \fBQwtTransform\fP\&.

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