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Qt5 built in qwt (#570)
- qt4->qt5 - in built qt5 6.1.5 because rhel7 is not upto date with qt5, removed findqwt.cmake - made a fix in qwt lib (qwt_plot_layout.h) to work with 5.15 and lower versions for qrect constr. - qt5 forms fixed, qt4 many hard coding forms switched to forms including qtabwidget, scrolls etc, fonts moved to forms - docking option enabled by default, removed option to disable docking feature from "Mode" - added qVersionResolve utility functions to handle compatibility before and after qt5.12 - qtplots (ian's code) takes in gain mode enable to set some settings within the class, with proper gain plot ticks - ensure gain plots have no zooming of z axis in 2d and y axis in 1d - removed placeholder text in qpalette in main window form as its not supportd until 5.12 (so using qt5.9 designer insted of qt5.15 to cope) - tab order Servers: - fixed some error messages that were empty for fail in funcs (mostly minor as if this error, major issues)
This commit is contained in:
Dhanya Thattil
299
libs/qwt-6.1.5/doc/man/man3/QwtSpline.3
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299
libs/qwt-6.1.5/doc/man/man3/QwtSpline.3
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.TH "QwtSpline" 3 "Mon Jun 1 2020" "Version 6.1.5" "Qwt User's Guide" \" -*- nroff -*-
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.ad l
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.nh
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.SH NAME
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QwtSpline \- A class for spline interpolation\&.
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.SH SYNOPSIS
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.br
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.PP
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.PP
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\fC#include <qwt_spline\&.h>\fP
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.SS "Public Types"
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.in +1c
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.ti -1c
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.RI "enum \fBSplineType\fP { \fBNatural\fP, \fBPeriodic\fP }"
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.br
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.RI "Spline type\&. "
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.in -1c
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.SS "Public Member Functions"
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.in +1c
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.ti -1c
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.RI "\fBQwtSpline\fP ()"
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.br
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.RI "Constructor\&. "
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.ti -1c
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.RI "\fBQwtSpline\fP (const \fBQwtSpline\fP &)"
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.br
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.ti -1c
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.RI "\fB~QwtSpline\fP ()"
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.br
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.RI "Destructor\&. "
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.ti -1c
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.RI "\fBQwtSpline\fP & \fBoperator=\fP (const \fBQwtSpline\fP &)"
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.br
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.ti -1c
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.RI "void \fBsetSplineType\fP (\fBSplineType\fP)"
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.br
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.ti -1c
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.RI "\fBSplineType\fP \fBsplineType\fP () const"
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.br
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.ti -1c
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.RI "bool \fBsetPoints\fP (const QPolygonF &\fBpoints\fP)"
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.br
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.RI "Calculate the spline coefficients\&. "
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.ti -1c
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.RI "QPolygonF \fBpoints\fP () const"
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.br
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.ti -1c
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.RI "void \fBreset\fP ()"
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.br
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.RI "Free allocated memory and set size to 0\&. "
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.ti -1c
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.RI "bool \fBisValid\fP () const"
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.br
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.RI "True if valid\&. "
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.ti -1c
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.RI "double \fBvalue\fP (double x) const"
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.br
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.ti -1c
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.RI "const QVector< double > & \fBcoefficientsA\fP () const"
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.br
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.ti -1c
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.RI "const QVector< double > & \fBcoefficientsB\fP () const"
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.br
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.ti -1c
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.RI "const QVector< double > & \fBcoefficientsC\fP () const"
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.br
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.in -1c
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.SS "Protected Member Functions"
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.in +1c
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.ti -1c
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.RI "bool \fBbuildNaturalSpline\fP (const QPolygonF &)"
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.br
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.RI "Determines the coefficients for a natural spline\&. "
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.ti -1c
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.RI "bool \fBbuildPeriodicSpline\fP (const QPolygonF &)"
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.br
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.RI "Determines the coefficients for a periodic spline\&. "
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.in -1c
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.SH "Detailed Description"
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.PP
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A class for spline interpolation\&.
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The \fBQwtSpline\fP class is used for cubical spline interpolation\&. Two types of splines, natural and periodic, are supported\&.
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.PP
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\fBUsage:\fP
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.RS 4
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.PD 0
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.IP "1." 4
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First call \fBsetPoints()\fP to determine the spline coefficients for a tabulated function y(x)\&.
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.IP "2." 4
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After the coefficients have been set up, the interpolated function value for an argument x can be determined by calling \fBQwtSpline::value()\fP\&.
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.PP
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.RE
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.PP
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\fBExample:\fP
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.RS 4
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.PP
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.nf
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#include <qwt_spline\&.h>
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QPolygonF interpolate(const QPolygonF& points, int numValues)
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{
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QwtSpline spline;
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if ( !spline\&.setPoints(points) )
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return points;
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QPolygonF interpolatedPoints(numValues);
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const double delta =
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(points[numPoints - 1]\&.x() - points[0]\&.x()) / (points\&.size() - 1);
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for(i = 0; i < points\&.size(); i++) / interpolate
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{
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const double x = points[0]\&.x() + i * delta;
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interpolatedPoints[i]\&.setX(x);
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interpolatedPoints[i]\&.setY(spline\&.value(x));
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}
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return interpolatedPoints;
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}
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.fi
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.PP
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.RE
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.PP
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.SH "Member Enumeration Documentation"
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.PP
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.SS "enum \fBQwtSpline::SplineType\fP"
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.PP
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Spline type\&.
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.PP
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\fBEnumerator\fP
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.in +1c
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.TP
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\fB\fINatural \fP\fP
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A natural spline\&.
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.TP
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\fB\fIPeriodic \fP\fP
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A periodic spline\&.
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.SH "Constructor & Destructor Documentation"
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.PP
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.SS "QwtSpline::QwtSpline (const \fBQwtSpline\fP & other)"
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Copy constructor
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.PP
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\fBParameters\fP
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.RS 4
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\fIother\fP Spline used for initialization
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.RE
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.PP
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.SH "Member Function Documentation"
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.PP
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.SS "bool QwtSpline::buildNaturalSpline (const QPolygonF & points)\fC [protected]\fP"
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.PP
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Determines the coefficients for a natural spline\&.
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.PP
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\fBReturns\fP
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.RS 4
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true if successful
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.RE
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.PP
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.SS "bool QwtSpline::buildPeriodicSpline (const QPolygonF & points)\fC [protected]\fP"
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.PP
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Determines the coefficients for a periodic spline\&.
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.PP
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\fBReturns\fP
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.RS 4
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true if successful
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.RE
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.PP
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.SS "const QVector< double > & QwtSpline::coefficientsA () const"
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.PP
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\fBReturns\fP
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.RS 4
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A coefficients
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.RE
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.PP
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.SS "const QVector< double > & QwtSpline::coefficientsB () const"
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.PP
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\fBReturns\fP
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.RS 4
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B coefficients
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.RE
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.PP
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.SS "const QVector< double > & QwtSpline::coefficientsC () const"
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.PP
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\fBReturns\fP
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.RS 4
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C coefficients
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.RE
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.PP
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.SS "\fBQwtSpline\fP & QwtSpline::operator= (const \fBQwtSpline\fP & other)"
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Assignment operator
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.PP
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\fBParameters\fP
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.RS 4
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\fIother\fP Spline used for initialization
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.RE
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.PP
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\fBReturns\fP
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.RS 4
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*this
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.RE
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.PP
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.SS "QPolygonF QwtSpline::points () const"
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.PP
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\fBReturns\fP
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.RS 4
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Points, that have been by \fBsetPoints()\fP
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.RE
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.PP
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.SS "bool QwtSpline::setPoints (const QPolygonF & points)"
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.PP
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Calculate the spline coefficients\&. Depending on the value of \fIperiodic\fP, this function will determine the coefficients for a natural or a periodic spline and store them internally\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fIpoints\fP Points
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.RE
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.PP
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\fBReturns\fP
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.RS 4
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true if successful
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.RE
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.PP
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\fBWarning\fP
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.RS 4
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The sequence of x (but not y) values has to be strictly monotone increasing, which means \fCpoints[i]\&.x() < points[i+1]\&.x()\fP\&. If this is not the case, the function will return false
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.RE
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.PP
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.SS "void QwtSpline::setSplineType (\fBSplineType\fP splineType)"
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Select the algorithm used for calculating the spline
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.PP
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\fBParameters\fP
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.RS 4
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\fIsplineType\fP Spline type
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBsplineType()\fP
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.RE
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.PP
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.SS "\fBQwtSpline::SplineType\fP QwtSpline::splineType () const"
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.PP
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\fBReturns\fP
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.RS 4
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the spline type
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBsetSplineType()\fP
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.RE
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.PP
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.SS "double QwtSpline::value (double x) const"
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Calculate the interpolated function value corresponding to a given argument x\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fIx\fP Coordinate
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.RE
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.PP
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\fBReturns\fP
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.RS 4
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Interpolated coordinate
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.RE
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.PP
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.SH "Author"
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.PP
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Generated automatically by Doxygen for Qwt User's Guide from the source code\&.
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