.TH "QwtLinearScaleEngine" 3 "Wed Jan 2 2019" "Version 6.1.4" "Qwt User's Guide" \" -*- nroff -*-
.ad l
.nh
.SH NAME
QwtLinearScaleEngine \- A scale engine for linear scales\&.  

.SH SYNOPSIS
.br
.PP
.PP
\fC#include <qwt_scale_engine\&.h>\fP
.PP
Inherits \fBQwtScaleEngine\fP\&.
.PP
Inherited by \fBQwtDateScaleEngine\fP\&.
.SS "Public Member Functions"

.in +1c
.ti -1c
.RI "\fBQwtLinearScaleEngine\fP (uint \fBbase\fP=10)"
.br
.ti -1c
.RI "virtual \fB~QwtLinearScaleEngine\fP ()"
.br
.RI "Destructor\&. "
.ti -1c
.RI "virtual void \fBautoScale\fP (int maxNumSteps, double &x1, double &x2, double &stepSize) const"
.br
.ti -1c
.RI "virtual \fBQwtScaleDiv\fP \fBdivideScale\fP (double x1, double x2, int maxMajorSteps, int maxMinorSteps, double stepSize=0\&.0) const"
.br
.RI "Calculate a scale division for an interval\&. "
.in -1c
.SS "Protected Member Functions"

.in +1c
.ti -1c
.RI "\fBQwtInterval\fP \fBalign\fP (const \fBQwtInterval\fP &, double stepSize) const"
.br
.RI "Align an interval to a step size\&. "
.ti -1c
.RI "void \fBbuildTicks\fP (const \fBQwtInterval\fP &, double stepSize, int maxMinorSteps, QList< double > ticks[\fBQwtScaleDiv::NTickTypes\fP]) const"
.br
.RI "Calculate ticks for an interval\&. "
.ti -1c
.RI "QList< double > \fBbuildMajorTicks\fP (const \fBQwtInterval\fP &interval, double stepSize) const"
.br
.RI "Calculate major ticks for an interval\&. "
.ti -1c
.RI "void \fBbuildMinorTicks\fP (const QList< double > &majorTicks, int maxMinorSteps, double stepSize, QList< double > &minorTicks, QList< double > &mediumTicks) const"
.br
.RI "Calculate minor/medium ticks for major ticks\&. "
.in -1c
.SS "Additional Inherited Members"
.SH "Detailed Description"
.PP 
A scale engine for linear scales\&. 

The step size will fit into the pattern $\left\{ 1,2,5\right\} \cdot 10^{n}$, where n is an integer\&. 
.SH "Constructor & Destructor Documentation"
.PP 
.SS "QwtLinearScaleEngine::QwtLinearScaleEngine (uint base = \fC10\fP)"
Constructor
.PP
\fBParameters:\fP
.RS 4
\fIbase\fP Base of the scale engine 
.RE
.PP
\fBSee also:\fP
.RS 4
\fBsetBase()\fP 
.RE
.PP

.SH "Member Function Documentation"
.PP 
.SS "\fBQwtInterval\fP QwtLinearScaleEngine::align (const \fBQwtInterval\fP & interval, double stepSize) const\fC [protected]\fP"

.PP
Align an interval to a step size\&. The limits of an interval are aligned that both are integer multiples of the step size\&.
.PP
\fBParameters:\fP
.RS 4
\fIinterval\fP Interval 
.br
\fIstepSize\fP Step size
.RE
.PP
\fBReturns:\fP
.RS 4
Aligned interval 
.RE
.PP

.SS "void QwtLinearScaleEngine::autoScale (int maxNumSteps, double & x1, double & x2, double & stepSize) const\fC [virtual]\fP"
Align and divide an interval
.PP
\fBParameters:\fP
.RS 4
\fImaxNumSteps\fP Max\&. number of steps 
.br
\fIx1\fP First limit of the interval (In/Out) 
.br
\fIx2\fP Second limit of the interval (In/Out) 
.br
\fIstepSize\fP Step size (Out)
.RE
.PP
\fBSee also:\fP
.RS 4
\fBsetAttribute()\fP 
.RE
.PP

.PP
Implements \fBQwtScaleEngine\fP\&.
.PP
Reimplemented in \fBQwtDateScaleEngine\fP\&.
.SS "QList< double > QwtLinearScaleEngine::buildMajorTicks (const \fBQwtInterval\fP & interval, double stepSize) const\fC [protected]\fP"

.PP
Calculate major ticks for an interval\&. 
.PP
\fBParameters:\fP
.RS 4
\fIinterval\fP Interval 
.br
\fIstepSize\fP Step size
.RE
.PP
\fBReturns:\fP
.RS 4
Calculated ticks 
.RE
.PP

.SS "void QwtLinearScaleEngine::buildMinorTicks (const QList< double > & majorTicks, int maxMinorSteps, double stepSize, QList< double > & minorTicks, QList< double > & mediumTicks) const\fC [protected]\fP"

.PP
Calculate minor/medium ticks for major ticks\&. 
.PP
\fBParameters:\fP
.RS 4
\fImajorTicks\fP Major ticks 
.br
\fImaxMinorSteps\fP Maximum number of minor steps 
.br
\fIstepSize\fP Step size 
.br
\fIminorTicks\fP Array to be filled with the calculated minor ticks 
.br
\fImediumTicks\fP Array to be filled with the calculated medium ticks 
.RE
.PP

.SS "void QwtLinearScaleEngine::buildTicks (const \fBQwtInterval\fP & interval, double stepSize, int maxMinorSteps, QList< double > ticks[QwtScaleDiv::NTickTypes]) const\fC [protected]\fP"

.PP
Calculate ticks for an interval\&. 
.PP
\fBParameters:\fP
.RS 4
\fIinterval\fP Interval 
.br
\fIstepSize\fP Step size 
.br
\fImaxMinorSteps\fP Maximum number of minor steps 
.br
\fIticks\fP Arrays to be filled with the calculated ticks
.RE
.PP
\fBSee also:\fP
.RS 4
\fBbuildMajorTicks()\fP, \fBbuildMinorTicks\fP 
.RE
.PP

.SS "\fBQwtScaleDiv\fP QwtLinearScaleEngine::divideScale (double x1, double x2, int maxMajorSteps, int maxMinorSteps, double stepSize = \fC0\&.0\fP) const\fC [virtual]\fP"

.PP
Calculate a scale division for an interval\&. 
.PP
\fBParameters:\fP
.RS 4
\fIx1\fP First interval limit 
.br
\fIx2\fP Second interval limit 
.br
\fImaxMajorSteps\fP Maximum for the number of major steps 
.br
\fImaxMinorSteps\fP Maximum number of minor steps 
.br
\fIstepSize\fP Step size\&. If stepSize == 0, the engine calculates one\&.
.RE
.PP
\fBReturns:\fP
.RS 4
Calculated scale division 
.RE
.PP

.PP
Implements \fBQwtScaleEngine\fP\&.
.PP
Reimplemented in \fBQwtDateScaleEngine\fP\&.

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