.TH "QwtPlot" 3 "Fri Apr 15 2011" "Version 6.0.0" "Qwt User's Guide" \" -*- nroff -*-
.ad l
.nh
.SH NAME
QwtPlot \- 
.PP
A 2-D plotting widget.  

.SH SYNOPSIS
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.PP
.PP
\fC#include <qwt_plot.h>\fP
.PP
Inherits \fBQwtPlotDict\fP.
.SS "Public Types"

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.RI "enum \fBAxis\fP { \fByLeft\fP, \fByRight\fP, \fBxBottom\fP, \fBxTop\fP, \fBaxisCnt\fP }"
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.RI "enum \fBLegendPosition\fP { \fBLeftLegend\fP, \fBRightLegend\fP, \fBBottomLegend\fP, \fBTopLegend\fP, \fBExternalLegend\fP }"
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.SS "Public Slots"

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.RI "virtual void \fBreplot\fP ()"
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.RI "void \fBautoRefresh\fP ()"
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.SS "Signals"

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.RI "void \fBlegendClicked\fP (\fBQwtPlotItem\fP *plotItem)"
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.RI "void \fBlegendChecked\fP (\fBQwtPlotItem\fP *plotItem, bool on)"
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.SS "Public Member Functions"

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.RI "\fBQwtPlot\fP (QWidget *=NULL)"
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.RI "\fBQwtPlot\fP (const \fBQwtText\fP &title, QWidget *p=NULL)"
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.RI "virtual \fB~QwtPlot\fP ()"
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.RI "void \fBapplyProperties\fP (const QString &)"
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.RI "QString \fBgrabProperties\fP () const "
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.RI "void \fBsetAutoReplot\fP (bool tf=true)"
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.RI "bool \fBautoReplot\fP () const "
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.RI "\fBQwtPlotLayout\fP * \fBplotLayout\fP ()"
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.RI "const \fBQwtPlotLayout\fP * \fBplotLayout\fP () const "
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.RI "void \fBsetTitle\fP (const QString &)"
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.RI "void \fBsetTitle\fP (const \fBQwtText\fP &t)"
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.RI "\fBQwtText\fP \fBtitle\fP () const "
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.RI "\fBQwtTextLabel\fP * \fBtitleLabel\fP ()"
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.RI "const \fBQwtTextLabel\fP * \fBtitleLabel\fP () const "
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.RI "\fBQwtPlotCanvas\fP * \fBcanvas\fP ()"
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.RI "const \fBQwtPlotCanvas\fP * \fBcanvas\fP () const "
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.RI "void \fBsetCanvasBackground\fP (const QBrush &)"
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.RI "QBrush \fBcanvasBackground\fP () const "
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.RI "void \fBsetCanvasLineWidth\fP (int w)"
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.RI "int \fBcanvasLineWidth\fP () const "
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.RI "virtual \fBQwtScaleMap\fP \fBcanvasMap\fP (int axisId) const "
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.RI "double \fBinvTransform\fP (int axisId, int pos) const "
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.RI "double \fBtransform\fP (int axisId, double value) const "
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.RI "\fBQwtScaleEngine\fP * \fBaxisScaleEngine\fP (int axisId)"
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.RI "const \fBQwtScaleEngine\fP * \fBaxisScaleEngine\fP (int axisId) const "
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.RI "void \fBsetAxisScaleEngine\fP (int axisId, \fBQwtScaleEngine\fP *)"
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.RI "void \fBsetAxisAutoScale\fP (int axisId, bool on=true)"
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.RI "bool \fBaxisAutoScale\fP (int axisId) const "
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.RI "void \fBenableAxis\fP (int axisId, bool tf=true)"
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.RI "bool \fBaxisEnabled\fP (int axisId) const "
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.RI "void \fBsetAxisFont\fP (int axisId, const QFont &f)"
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.RI "QFont \fBaxisFont\fP (int axisId) const "
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.RI "void \fBsetAxisScale\fP (int axisId, double min, double max, double step=0)"
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.RI "void \fBsetAxisScaleDiv\fP (int axisId, const \fBQwtScaleDiv\fP &)"
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.RI "void \fBsetAxisScaleDraw\fP (int axisId, \fBQwtScaleDraw\fP *)"
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.RI "double \fBaxisStepSize\fP (int axisId) const "
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.RI "\fBQwtInterval\fP \fBaxisInterval\fP (int axisId) const "
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.RI "const \fBQwtScaleDiv\fP * \fBaxisScaleDiv\fP (int axisId) const "
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.RI "\fBQwtScaleDiv\fP * \fBaxisScaleDiv\fP (int axisId)"
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.RI "const \fBQwtScaleDraw\fP * \fBaxisScaleDraw\fP (int axisId) const "
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.RI "\fBQwtScaleDraw\fP * \fBaxisScaleDraw\fP (int axisId)"
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.RI "const \fBQwtScaleWidget\fP * \fBaxisWidget\fP (int axisId) const "
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.RI "\fBQwtScaleWidget\fP * \fBaxisWidget\fP (int axisId)"
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.RI "void \fBsetAxisLabelAlignment\fP (int axisId, Qt::Alignment)"
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.RI "void \fBsetAxisLabelRotation\fP (int axisId, double rotation)"
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.RI "void \fBsetAxisTitle\fP (int axisId, const QString &)"
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.RI "void \fBsetAxisTitle\fP (int axisId, const \fBQwtText\fP &)"
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.RI "\fBQwtText\fP \fBaxisTitle\fP (int axisId) const "
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.RI "void \fBsetAxisMaxMinor\fP (int axisId, int maxMinor)"
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.RI "int \fBaxisMaxMinor\fP (int axisId) const "
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.RI "void \fBsetAxisMaxMajor\fP (int axisId, int maxMajor)"
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.RI "int \fBaxisMaxMajor\fP (int axisId) const "
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.RI "void \fBinsertLegend\fP (\fBQwtLegend\fP *, \fBLegendPosition\fP=QwtPlot::RightLegend, double ratio=-1.0)"
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.RI "\fBQwtLegend\fP * \fBlegend\fP ()"
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.RI "const \fBQwtLegend\fP * \fBlegend\fP () const "
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.RI "virtual QSize \fBsizeHint\fP () const "
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.RI "virtual QSize \fBminimumSizeHint\fP () const "
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.RI "virtual void \fBupdateLayout\fP ()"
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.RI "virtual void \fBdrawCanvas\fP (QPainter *)"
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.RI "void \fBupdateAxes\fP ()"
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.RI "virtual bool \fBevent\fP (QEvent *)"
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.RI "virtual void \fBdrawItems\fP (QPainter *, const QRectF &, const \fBQwtScaleMap\fP maps[axisCnt]) const "
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.SS "Protected Slots"

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.RI "virtual void \fBlegendItemClicked\fP ()"
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.RI "virtual void \fBlegendItemChecked\fP (bool)"
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.SS "Protected Member Functions"

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.RI "virtual void \fBupdateTabOrder\fP ()"
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.RI "virtual void \fBresizeEvent\fP (QResizeEvent *e)"
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.SS "Static Protected Member Functions"

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.RI "static bool \fBaxisValid\fP (int axisId)"
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.SH "Detailed Description"
.PP 
A 2-D plotting widget. 

\fBQwtPlot\fP is a widget for plotting two-dimensional graphs. An unlimited number of plot items can be displayed on its canvas. Plot items might be curves (\fBQwtPlotCurve\fP), markers (\fBQwtPlotMarker\fP), the grid (\fBQwtPlotGrid\fP), or anything else derived from \fBQwtPlotItem\fP. A plot can have up to four axes, with each plot item attached to an x- and a y axis. The scales at the axes can be explicitely set (\fBQwtScaleDiv\fP), or are calculated from the plot items, using algorithms (\fBQwtScaleEngine\fP) which can be configured separately for each axis.
.PP
.PP
\fBExample\fP
.RS 4
The following example shows (schematically) the most simple way to use \fBQwtPlot\fP. By default, only the left and bottom axes are visible and their scales are computed automatically. 
.PP
.nf

#include <qwt_plot.h>
#include <qwt_plot_curve.h>

QwtPlot *myPlot = new QwtPlot("Two Curves", parent);

// add curves
QwtPlotCurve *curve1 = new QwtPlotCurve("Curve 1");
QwtPlotCurve *curve2 = new QwtPlotCurve("Curve 2");

// copy the data into the curves
curve1->setData(...);
curve2->setData(...);

curve1->attach(myPlot);
curve2->attach(myPlot);

// finally, refresh the plot
myPlot->replot();

.fi
.PP
 
.RE
.PP

.SH "Member Enumeration Documentation"
.PP 
.SS "enum \fBQwtPlot::Axis\fP"
.PP
Axis index. 
.PP
\fBEnumerator: \fP
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.TP
\fB\fIyLeft \fP\fP
Y axis left of the canvas. 
.TP
\fB\fIyRight \fP\fP
Y axis right of the canvas. 
.TP
\fB\fIxBottom \fP\fP
X axis below the canvas. 
.TP
\fB\fIxTop \fP\fP
X axis above the canvas. 
.TP
\fB\fIaxisCnt \fP\fP
Number of axes. 
.SS "enum \fBQwtPlot::LegendPosition\fP"Position of the legend, relative to the canvas.
.PP
\fBSee also:\fP
.RS 4
\fBinsertLegend()\fP 
.RE
.PP
\fBNote:\fP
.RS 4
In case of ExternalLegend, the legend is not handled by \fBQwtPlotRenderer\fP 
.RE
.PP

.PP
\fBEnumerator: \fP
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.TP
\fB\fILeftLegend \fP\fP
The legend will be left from the \fBQwtPlot::yLeft\fP axis. 
.TP
\fB\fIRightLegend \fP\fP
The legend will be right from the \fBQwtPlot::yRight\fP axis. 
.TP
\fB\fIBottomLegend \fP\fP
The legend will be below \fBQwtPlot::xBottom\fP axis. 
.TP
\fB\fITopLegend \fP\fP
The legend will be between \fBQwtPlot::xTop\fP axis and the title. 
.TP
\fB\fIExternalLegend \fP\fP
External means that only the content of the legend will be handled by \fBQwtPlot\fP, but not its geometry. This type can be used to have a legend in an external window ( or on the canvas ). 
.SH "Constructor & Destructor Documentation"
.PP 
.SS "QwtPlot::QwtPlot (QWidget *parent = \fCNULL\fP)\fC [explicit]\fP"
.PP
Constructor. \fBParameters:\fP
.RS 4
\fIparent\fP Parent widget 
.RE
.PP

.SS "QwtPlot::QwtPlot (const \fBQwtText\fP &title, QWidget *parent = \fCNULL\fP)\fC [explicit]\fP"
.PP
Constructor. \fBParameters:\fP
.RS 4
\fItitle\fP Title text 
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\fIparent\fP Parent widget 
.RE
.PP

.SS "QwtPlot::~QwtPlot ()\fC [virtual]\fP"
.PP
Destructor. 
.SH "Member Function Documentation"
.PP 
.SS "void QwtPlot::applyProperties (const QString &)"This method is intended for manipulating the plot widget from a specific editor in the Qwt designer plugin.
.PP
\fBWarning:\fP
.RS 4
The plot editor has never been implemented. 
.RE
.PP

.SS "void QwtPlot::autoRefresh ()\fC [slot]\fP"
.PP
Replots the plot if \fBautoReplot()\fP is \fCtrue\fP. 
.SS "bool QwtPlot::autoReplot () const"\fBReturns:\fP
.RS 4
true if the autoReplot option is set. 
.RE
.PP
\fBSee also:\fP
.RS 4
\fBsetAutoReplot()\fP 
.RE
.PP

.SS "bool QwtPlot::axisAutoScale (intaxisId) const"\fBReturns:\fP
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\fCtrue\fP if autoscaling is enabled 
.RE
.PP
\fBParameters:\fP
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\fIaxisId\fP axis index 
.RE
.PP

.SS "bool QwtPlot::axisEnabled (intaxisId) const"\fBReturns:\fP
.RS 4
\fCtrue\fP if a specified axis is enabled 
.RE
.PP
\fBParameters:\fP
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\fIaxisId\fP axis index 
.RE
.PP

.SS "QFont QwtPlot::axisFont (intaxisId) const"\fBReturns:\fP
.RS 4
the font of the scale labels for a specified axis 
.RE
.PP
\fBParameters:\fP
.RS 4
\fIaxisId\fP axis index 
.RE
.PP

.SS "\fBQwtInterval\fP QwtPlot::axisInterval (intaxisId) const"
.PP
Return the current interval of the specified axis. This is only a convenience function for axisScaleDiv( axisId )->interval();
.PP
\fBParameters:\fP
.RS 4
\fIaxisId\fP axis index 
.RE
.PP
\fBReturns:\fP
.RS 4
Scale interval
.RE
.PP
\fBSee also:\fP
.RS 4
\fBQwtScaleDiv\fP, \fBaxisScaleDiv()\fP 
.RE
.PP

.SS "int QwtPlot::axisMaxMajor (intaxisId) const"\fBReturns:\fP
.RS 4
the maximum number of major ticks for a specified axis 
.RE
.PP
\fBParameters:\fP
.RS 4
\fIaxisId\fP axis index 
.RE
.PP
\fBSee also:\fP
.RS 4
\fBsetAxisMaxMajor()\fP 
.RE
.PP

.SS "int QwtPlot::axisMaxMinor (intaxisId) const"\fBReturns:\fP
.RS 4
the maximum number of minor ticks for a specified axis 
.RE
.PP
\fBParameters:\fP
.RS 4
\fIaxisId\fP axis index 
.RE
.PP
\fBSee also:\fP
.RS 4
\fBsetAxisMaxMinor()\fP 
.RE
.PP

.SS "const \fBQwtScaleDiv\fP * QwtPlot::axisScaleDiv (intaxisId) const"
.PP
Return the scale division of a specified axis. axisScaleDiv(axisId)->lowerBound(), axisScaleDiv(axisId)->upperBound() are the current limits of the axis scale.
.PP
\fBParameters:\fP
.RS 4
\fIaxisId\fP axis index 
.RE
.PP
\fBReturns:\fP
.RS 4
Scale division
.RE
.PP
\fBSee also:\fP
.RS 4
\fBQwtScaleDiv\fP, \fBsetAxisScaleDiv()\fP 
.RE
.PP

.SS "\fBQwtScaleDiv\fP * QwtPlot::axisScaleDiv (intaxisId)"
.PP
Return the scale division of a specified axis. axisScaleDiv(axisId)->lowerBound(), axisScaleDiv(axisId)->upperBound() are the current limits of the axis scale.
.PP
\fBParameters:\fP
.RS 4
\fIaxisId\fP axis index 
.RE
.PP
\fBReturns:\fP
.RS 4
Scale division
.RE
.PP
\fBSee also:\fP
.RS 4
\fBQwtScaleDiv\fP, \fBsetAxisScaleDiv()\fP 
.RE
.PP

.SS "const \fBQwtScaleDraw\fP * QwtPlot::axisScaleDraw (intaxisId) const"\fBReturns:\fP
.RS 4
the scale draw of a specified axis 
.RE
.PP
\fBParameters:\fP
.RS 4
\fIaxisId\fP axis index 
.RE
.PP
\fBReturns:\fP
.RS 4
specified scaleDraw for axis, or NULL if axis is invalid. 
.RE
.PP
\fBSee also:\fP
.RS 4
\fBQwtScaleDraw\fP 
.RE
.PP

.SS "\fBQwtScaleDraw\fP * QwtPlot::axisScaleDraw (intaxisId)"\fBReturns:\fP
.RS 4
the scale draw of a specified axis 
.RE
.PP
\fBParameters:\fP
.RS 4
\fIaxisId\fP axis index 
.RE
.PP
\fBReturns:\fP
.RS 4
specified scaleDraw for axis, or NULL if axis is invalid. 
.RE
.PP
\fBSee also:\fP
.RS 4
\fBQwtScaleDraw\fP 
.RE
.PP

.SS "\fBQwtScaleEngine\fP * QwtPlot::axisScaleEngine (intaxisId)"\fBParameters:\fP
.RS 4
\fIaxisId\fP axis index 
.RE
.PP
\fBReturns:\fP
.RS 4
Scale engine for a specific axis 
.RE
.PP

.SS "const \fBQwtScaleEngine\fP * QwtPlot::axisScaleEngine (intaxisId) const"\fBParameters:\fP
.RS 4
\fIaxisId\fP axis index 
.RE
.PP
\fBReturns:\fP
.RS 4
Scale engine for a specific axis 
.RE
.PP

.SS "double QwtPlot::axisStepSize (intaxisId) const"Return the step size parameter, that has been set in setAxisScale. This doesn't need to be the step size of the current scale.
.PP
\fBParameters:\fP
.RS 4
\fIaxisId\fP axis index 
.RE
.PP
\fBReturns:\fP
.RS 4
step size parameter value
.RE
.PP
\fBSee also:\fP
.RS 4
\fBsetAxisScale()\fP 
.RE
.PP

.SS "\fBQwtText\fP QwtPlot::axisTitle (intaxisId) const"\fBReturns:\fP
.RS 4
the title of a specified axis 
.RE
.PP
\fBParameters:\fP
.RS 4
\fIaxisId\fP axis index 
.RE
.PP

.SS "bool QwtPlot::axisValid (intaxisId)\fC [static, protected]\fP"\fBReturns:\fP
.RS 4
\fCtrue\fP if the specified axis exists, otherwise \fCfalse\fP 
.RE
.PP
\fBParameters:\fP
.RS 4
\fIaxisId\fP axis index 
.RE
.PP

.SS "const \fBQwtScaleWidget\fP * QwtPlot::axisWidget (intaxisId) const"\fBReturns:\fP
.RS 4
specified axis, or NULL if axisId is invalid. 
.RE
.PP
\fBParameters:\fP
.RS 4
\fIaxisId\fP axis index 
.RE
.PP

.SS "\fBQwtScaleWidget\fP * QwtPlot::axisWidget (intaxisId)"\fBReturns:\fP
.RS 4
specified axis, or NULL if axisId is invalid. 
.RE
.PP
\fBParameters:\fP
.RS 4
\fIaxisId\fP axis index 
.RE
.PP

.SS "const \fBQwtPlotCanvas\fP * QwtPlot::canvas () const"\fBReturns:\fP
.RS 4
the plot's canvas 
.RE
.PP

.SS "\fBQwtPlotCanvas\fP * QwtPlot::canvas ()"\fBReturns:\fP
.RS 4
the plot's canvas 
.RE
.PP

.SS "QBrush QwtPlot::canvasBackground () const"Nothing else than: \fBcanvas()\fP->palette().brush( QPalette::Normal, QPalette::Window);
.PP
\fBReturns:\fP
.RS 4
Background brush of the plotting area. 
.RE
.PP
\fBSee also:\fP
.RS 4
\fBsetCanvasBackground()\fP 
.RE
.PP

.SS "int QwtPlot::canvasLineWidth () const"Nothing else than: \fBcanvas()\fP->lineWidth(), left for compatibility only.
.PP
\fBReturns:\fP
.RS 4
the border width of the plotting area 
.RE
.PP

.SS "\fBQwtScaleMap\fP QwtPlot::canvasMap (intaxisId) const\fC [virtual]\fP"\fBParameters:\fP
.RS 4
\fIaxisId\fP Axis 
.RE
.PP
\fBReturns:\fP
.RS 4
Map for the axis on the canvas. With this map pixel coordinates can translated to plot coordinates and vice versa. 
.RE
.PP
\fBSee also:\fP
.RS 4
\fBQwtScaleMap\fP, \fBtransform()\fP, \fBinvTransform()\fP 
.RE
.PP

.SS "void QwtPlot::drawCanvas (QPainter *painter)\fC [virtual]\fP"Redraw the canvas. 
.PP
\fBParameters:\fP
.RS 4
\fIpainter\fP Painter used for drawing
.RE
.PP
\fBWarning:\fP
.RS 4
drawCanvas calls drawItems what is also used for printing. Applications that like to add individual plot items better overload \fBdrawItems()\fP 
.RE
.PP
\fBSee also:\fP
.RS 4
\fBdrawItems()\fP 
.RE
.PP

.SS "void QwtPlot::drawItems (QPainter *painter, const QRectF &canvasRect, const \fBQwtScaleMap\fPmap[axisCnt]) const\fC [virtual]\fP"Redraw the canvas items. 
.PP
\fBParameters:\fP
.RS 4
\fIpainter\fP Painter used for drawing 
.br
\fIcanvasRect\fP Bounding rectangle where to paint 
.br
\fImap\fP \fBQwtPlot::axisCnt\fP maps, mapping between plot and paint device coordinates 
.RE
.PP

.SS "void QwtPlot::enableAxis (intaxisId, booltf = \fCtrue\fP)"
.PP
Enable or disable a specified axis. When an axis is disabled, this only means that it is not visible on the screen. Curves, markers and can be attached to disabled axes, and transformation of screen coordinates into values works as normal.
.PP
Only xBottom and yLeft are enabled by default. 
.PP
\fBParameters:\fP
.RS 4
\fIaxisId\fP axis index 
.br
\fItf\fP \fCtrue\fP (enabled) or \fCfalse\fP (disabled) 
.RE
.PP

.SS "bool QwtPlot::event (QEvent *event)\fC [virtual]\fP"
.PP
Adds handling of layout requests. \fBParameters:\fP
.RS 4
\fIevent\fP Event 
.RE
.PP

.SS "QString QwtPlot::grabProperties () const"This method is intended for manipulating the plot widget from a specific editor in the Qwt designer plugin.
.PP
\fBWarning:\fP
.RS 4
The plot editor has never been implemented. 
.RE
.PP

.SS "void QwtPlot::insertLegend (\fBQwtLegend\fP *legend, \fBQwtPlot::LegendPosition\fPpos = \fCQwtPlot::RightLegend\fP, doubleratio = \fC-1.0\fP)"
.PP
Insert a legend. If the position legend is \fC\fBQwtPlot::LeftLegend\fP\fP or \fC\fBQwtPlot::RightLegend\fP\fP the legend will be organized in one column from top to down. Otherwise the legend items will be placed in a table with a best fit number of columns from left to right.
.PP
If pos != \fBQwtPlot::ExternalLegend\fP the plot widget will become parent of the legend. It will be deleted when the plot is deleted, or another legend is set with \fBinsertLegend()\fP.
.PP
\fBParameters:\fP
.RS 4
\fIlegend\fP Legend 
.br
\fIpos\fP The legend's position. For top/left position the number of colums will be limited to 1, otherwise it will be set to unlimited.
.br
\fIratio\fP Ratio between legend and the bounding rect of title, canvas and axes. The legend will be shrinked if it would need more space than the given ratio. The ratio is limited to ]0.0 .. 1.0]. In case of <= 0.0 it will be reset to the default ratio. The default vertical/horizontal ratio is 0.33/0.5.
.RE
.PP
\fBSee also:\fP
.RS 4
\fBlegend()\fP, \fBQwtPlotLayout::legendPosition()\fP, \fBQwtPlotLayout::setLegendPosition()\fP 
.RE
.PP

.SS "double QwtPlot::invTransform (intaxisId, intpos) const"Transform the x or y coordinate of a position in the drawing region into a value. 
.PP
\fBParameters:\fP
.RS 4
\fIaxisId\fP axis index 
.br
\fIpos\fP position 
.RE
.PP
\fBWarning:\fP
.RS 4
The position can be an x or a y coordinate, depending on the specified axis. 
.RE
.PP

.SS "\fBQwtLegend\fP * QwtPlot::legend ()"\fBReturns:\fP
.RS 4
the plot's legend 
.RE
.PP
\fBSee also:\fP
.RS 4
\fBinsertLegend()\fP 
.RE
.PP

.SS "const \fBQwtLegend\fP * QwtPlot::legend () const"\fBReturns:\fP
.RS 4
the plot's legend 
.RE
.PP
\fBSee also:\fP
.RS 4
\fBinsertLegend()\fP 
.RE
.PP

.SS "void QwtPlot::legendChecked (\fBQwtPlotItem\fP *plotItem, boolon)\fC [signal]\fP"A signal which is emitted when the user has clicked on a legend item, which is in \fBQwtLegend::CheckableItem\fP mode
.PP
\fBParameters:\fP
.RS 4
\fIplotItem\fP Corresponding plot item of the selected legend item 
.br
\fIon\fP True when the legen item is checked
.RE
.PP
\fBNote:\fP
.RS 4
clicks are disabled as default 
.RE
.PP
\fBSee also:\fP
.RS 4
\fBQwtLegend::setItemMode()\fP, \fBQwtLegend::itemMode()\fP 
.RE
.PP

.SS "void QwtPlot::legendClicked (\fBQwtPlotItem\fP *plotItem)\fC [signal]\fP"A signal which is emitted when the user has clicked on a legend item, which is in \fBQwtLegend::ClickableItem\fP mode.
.PP
\fBParameters:\fP
.RS 4
\fIplotItem\fP Corresponding plot item of the selected legend item
.RE
.PP
\fBNote:\fP
.RS 4
clicks are disabled as default 
.RE
.PP
\fBSee also:\fP
.RS 4
\fBQwtLegend::setItemMode()\fP, \fBQwtLegend::itemMode()\fP 
.RE
.PP

.SS "void QwtPlot::legendItemChecked (boolon)\fC [protected, virtual, slot]\fP"Called internally when the legend has been checked Emits a \fBlegendClicked()\fP signal. 
.SS "void QwtPlot::legendItemClicked ()\fC [protected, virtual, slot]\fP"Called internally when the legend has been clicked on. Emits a \fBlegendClicked()\fP signal. 
.SS "QSize QwtPlot::minimumSizeHint () const\fC [virtual]\fP"
.PP
Return a minimum size hint. 
.SS "const \fBQwtPlotLayout\fP * QwtPlot::plotLayout () const"\fBReturns:\fP
.RS 4
the plot's titel label. 
.RE
.PP

.SS "\fBQwtPlotLayout\fP * QwtPlot::plotLayout ()"\fBReturns:\fP
.RS 4
the plot's title 
.RE
.PP

.SS "void QwtPlot::replot ()\fC [virtual, slot]\fP"
.PP
Redraw the plot. If the autoReplot option is not set (which is the default) or if any curves are attached to raw data, the plot has to be refreshed explicitly in order to make changes visible.
.PP
\fBSee also:\fP
.RS 4
\fBsetAutoReplot()\fP 
.RE
.PP
\fBWarning:\fP
.RS 4
Calls \fBcanvas()\fP->repaint, take care of infinite recursions 
.RE
.PP

.SS "void QwtPlot::resizeEvent (QResizeEvent *e)\fC [protected, virtual]\fP"Resize and update internal layout 
.PP
\fBParameters:\fP
.RS 4
\fIe\fP Resize event 
.RE
.PP

.SS "void QwtPlot::setAutoReplot (booltf = \fCtrue\fP)"
.PP
Set or reset the autoReplot option. If the autoReplot option is set, the plot will be updated implicitly by manipulating member functions. Since this may be time-consuming, it is recommended to leave this option switched off and call \fBreplot()\fP explicitly if necessary.
.PP
The autoReplot option is set to false by default, which means that the user has to call \fBreplot()\fP in order to make changes visible. 
.PP
\fBParameters:\fP
.RS 4
\fItf\fP \fCtrue\fP or \fCfalse\fP. Defaults to \fCtrue\fP. 
.RE
.PP
\fBSee also:\fP
.RS 4
\fBreplot()\fP 
.RE
.PP

.SS "void QwtPlot::setAxisAutoScale (intaxisId, boolon = \fCtrue\fP)"
.PP
Enable autoscaling for a specified axis. This member function is used to switch back to autoscaling mode after a fixed scale has been set. Autoscaling is enabled by default.
.PP
\fBParameters:\fP
.RS 4
\fIaxisId\fP axis index 
.br
\fIon\fP On/Off 
.RE
.PP
\fBSee also:\fP
.RS 4
\fBsetAxisScale()\fP, \fBsetAxisScaleDiv()\fP, \fBupdateAxes()\fP
.RE
.PP
\fBNote:\fP
.RS 4
The autoscaling flag has no effect until \fBupdateAxes()\fP is executed ( called by \fBreplot()\fP ). 
.RE
.PP

.SS "void QwtPlot::setAxisFont (intaxisId, const QFont &f)"
.PP
Change the font of an axis. \fBParameters:\fP
.RS 4
\fIaxisId\fP axis index 
.br
\fIf\fP font 
.RE
.PP
\fBWarning:\fP
.RS 4
This function changes the font of the tick labels, not of the axis title. 
.RE
.PP

.SS "void QwtPlot::setAxisLabelAlignment (intaxisId, Qt::Alignmentalignment)"Change the alignment of the tick labels 
.PP
\fBParameters:\fP
.RS 4
\fIaxisId\fP axis index 
.br
\fIalignment\fP Or'd Qt::AlignmentFlags <see qnamespace.h> 
.RE
.PP
\fBSee also:\fP
.RS 4
\fBQwtScaleDraw::setLabelAlignment()\fP 
.RE
.PP

.SS "void QwtPlot::setAxisLabelRotation (intaxisId, doublerotation)"Rotate all tick labels 
.PP
\fBParameters:\fP
.RS 4
\fIaxisId\fP axis index 
.br
\fIrotation\fP Angle in degrees. When changing the label rotation, the label alignment might be adjusted too. 
.RE
.PP
\fBSee also:\fP
.RS 4
\fBQwtScaleDraw::setLabelRotation()\fP, \fBsetAxisLabelAlignment()\fP 
.RE
.PP

.SS "void QwtPlot::setAxisMaxMajor (intaxisId, intmaxMajor)"Set the maximum number of major scale intervals for a specified axis
.PP
\fBParameters:\fP
.RS 4
\fIaxisId\fP axis index 
.br
\fImaxMajor\fP maximum number of major steps 
.RE
.PP
\fBSee also:\fP
.RS 4
\fBaxisMaxMajor()\fP 
.RE
.PP

.SS "void QwtPlot::setAxisMaxMinor (intaxisId, intmaxMinor)"Set the maximum number of minor scale intervals for a specified axis
.PP
\fBParameters:\fP
.RS 4
\fIaxisId\fP axis index 
.br
\fImaxMinor\fP maximum number of minor steps 
.RE
.PP
\fBSee also:\fP
.RS 4
\fBaxisMaxMinor()\fP 
.RE
.PP

.SS "void QwtPlot::setAxisScale (intaxisId, doublemin, doublemax, doublestepSize = \fC0\fP)"
.PP
Disable autoscaling and specify a fixed scale for a selected axis. \fBParameters:\fP
.RS 4
\fIaxisId\fP axis index 
.br
\fImin\fP 
.br
\fImax\fP minimum and maximum of the scale 
.br
\fIstepSize\fP Major step size. If \fCstep == 0\fP, the step size is calculated automatically using the maxMajor setting. 
.RE
.PP
\fBSee also:\fP
.RS 4
\fBsetAxisMaxMajor()\fP, \fBsetAxisAutoScale()\fP, \fBaxisStepSize()\fP 
.RE
.PP

.SS "void QwtPlot::setAxisScaleDiv (intaxisId, const \fBQwtScaleDiv\fP &scaleDiv)"
.PP
Disable autoscaling and specify a fixed scale for a selected axis. \fBParameters:\fP
.RS 4
\fIaxisId\fP axis index 
.br
\fIscaleDiv\fP Scale division 
.RE
.PP
\fBSee also:\fP
.RS 4
\fBsetAxisScale()\fP, \fBsetAxisAutoScale()\fP 
.RE
.PP

.SS "void QwtPlot::setAxisScaleDraw (intaxisId, \fBQwtScaleDraw\fP *scaleDraw)"
.PP
Set a scale draw. \fBParameters:\fP
.RS 4
\fIaxisId\fP axis index 
.br
\fIscaleDraw\fP object responsible for drawing scales.
.RE
.PP
By passing scaleDraw it is possible to extend \fBQwtScaleDraw\fP functionality and let it take place in \fBQwtPlot\fP. Please note that scaleDraw has to be created with new and will be deleted by the corresponding QwtScale member ( like a child object ).
.PP
\fBSee also:\fP
.RS 4
\fBQwtScaleDraw\fP, \fBQwtScaleWidget\fP 
.RE
.PP
\fBWarning:\fP
.RS 4
The attributes of scaleDraw will be overwritten by those of the previous \fBQwtScaleDraw\fP. 
.RE
.PP

.SS "void QwtPlot::setAxisScaleEngine (intaxisId, \fBQwtScaleEngine\fP *scaleEngine)"Change the scale engine for an axis
.PP
\fBParameters:\fP
.RS 4
\fIaxisId\fP axis index 
.br
\fIscaleEngine\fP Scale engine
.RE
.PP
\fBSee also:\fP
.RS 4
\fBaxisScaleEngine()\fP 
.RE
.PP

.SS "void QwtPlot::setAxisTitle (intaxisId, const \fBQwtText\fP &title)"
.PP
Change the title of a specified axis. \fBParameters:\fP
.RS 4
\fIaxisId\fP axis index 
.br
\fItitle\fP axis title 
.RE
.PP

.SS "void QwtPlot::setAxisTitle (intaxisId, const QString &title)"
.PP
Change the title of a specified axis. \fBParameters:\fP
.RS 4
\fIaxisId\fP axis index 
.br
\fItitle\fP axis title 
.RE
.PP

.SS "void QwtPlot::setCanvasBackground (const QBrush &brush)"
.PP
Change the background of the plotting area. Sets brush to QPalette::Window of all colorgroups of the palette of the canvas. Using \fBcanvas()\fP->setPalette() is a more powerful way to set these colors.
.PP
\fBParameters:\fP
.RS 4
\fIbrush\fP New background brush 
.RE
.PP
\fBSee also:\fP
.RS 4
\fBcanvasBackground()\fP 
.RE
.PP

.SS "void QwtPlot::setCanvasLineWidth (intwidth)"
.PP
Change the border width of the plotting area. Nothing else than \fBcanvas()\fP->setLineWidth(w), left for compatibility only.
.PP
\fBParameters:\fP
.RS 4
\fIwidth\fP New border width 
.RE
.PP

.SS "void QwtPlot::setTitle (const QString &title)"Change the plot's title 
.PP
\fBParameters:\fP
.RS 4
\fItitle\fP New title 
.RE
.PP

.SS "void QwtPlot::setTitle (const \fBQwtText\fP &title)"Change the plot's title 
.PP
\fBParameters:\fP
.RS 4
\fItitle\fP New title 
.RE
.PP

.SS "QSize QwtPlot::sizeHint () const\fC [virtual]\fP"Return sizeHint 
.PP
\fBSee also:\fP
.RS 4
\fBminimumSizeHint()\fP 
.RE
.PP

.SS "\fBQwtText\fP QwtPlot::title () const"\fBReturns:\fP
.RS 4
the plot's title 
.RE
.PP

.SS "\fBQwtTextLabel\fP * QwtPlot::titleLabel ()"\fBReturns:\fP
.RS 4
the plot's titel label. 
.RE
.PP

.SS "const \fBQwtTextLabel\fP * QwtPlot::titleLabel () const"\fBReturns:\fP
.RS 4
the plot's titel label. 
.RE
.PP

.SS "double QwtPlot::transform (intaxisId, doublevalue) const"
.PP
Transform a value into a coordinate in the plotting region. \fBParameters:\fP
.RS 4
\fIaxisId\fP axis index 
.br
\fIvalue\fP value 
.RE
.PP
\fBReturns:\fP
.RS 4
X or y coordinate in the plotting region corresponding to the value. 
.RE
.PP

.SS "void QwtPlot::updateAxes ()"
.PP
Rebuild the scales. 
.SS "void QwtPlot::updateLayout ()\fC [virtual]\fP"
.PP
Adjust plot content to its current size. \fBSee also:\fP
.RS 4
\fBresizeEvent()\fP 
.RE
.PP

.SS "void QwtPlot::updateTabOrder ()\fC [protected, virtual]\fP"Update the focus tab order
.PP
The order is changed so that the canvas will be in front of the first legend item, or behind the last legend item - depending on the position of the legend. 

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