QwtPlotSpectroCurve man page

QwtPlotSpectroCurve —

Curve that displays 3D points as dots, where the z coordinate is mapped to a color.

Synopsis

#include <qwt_plot_spectrocurve.h>

Inherits QwtPlotSeriesItem, and QwtSeriesStore< QwtPoint3D >.

Public Types

enum PaintAttribute { ClipPoints = 1 }
Paint attributes.
typedef QFlags< PaintAttribute > PaintAttributes
Paint attributes.

Public Member Functions

QwtPlotSpectroCurve (const QString &title=QString::null)

QwtPlotSpectroCurve (const QwtText &title)

virtual ~QwtPlotSpectroCurve ()
Destructor.
virtual int rtti () const

void setPaintAttribute (PaintAttribute, bool on=true)

bool testPaintAttribute (PaintAttribute) const

void setSamples (const QVector< QwtPoint3D > &)

void setSamples (QwtSeriesData< QwtPoint3D > *)

void setColorMap (QwtColorMap *)

const QwtColorMap * colorMap () const

void setColorRange (const QwtInterval &)

QwtInterval & colorRange () const

virtual void drawSeries (QPainter *, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect, int from, int to) const

void setPenWidth (double width)

double penWidth () const

Protected Member Functions

virtual void drawDots (QPainter *, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect, int from, int to) const

Detailed Description

Curve that displays 3D points as dots, where the z coordinate is mapped to a color.

Member Enumeration Documentation

enum QwtPlotSpectroCurve::PaintAttribute

Paint attributes.

Enumerator

ClipPoints
Clip points outside the canvas rectangle.

Constructor & Destructor Documentation

QwtPlotSpectroCurve::QwtPlotSpectroCurve (const QString &title = QString::null) [explicit]

Constructor

Parameters:

title Title of the curve

QwtPlotSpectroCurve::QwtPlotSpectroCurve (const QwtText &title) [explicit]

Constructor

Parameters:

title Title of the curve

Member Function Documentation

const QwtColorMap * QwtPlotSpectroCurve::colorMap () const

Returns:

Color Map used for mapping the intensity values to colors

See Also:

setColorMap(), setColorRange(), QwtColorMap::color()

QwtInterval & QwtPlotSpectroCurve::colorRange () const

Returns:

Value interval, that corresponds to the color map

See Also:

setColorRange(), setColorMap(), QwtColorMap::color()

void QwtPlotSpectroCurve::drawDots (QPainter *painter, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect, intfrom, intto) const [protected], [virtual]

Draw a subset of the points

Parameters:

painter Painter
xMap Maps x-values into pixel coordinates.
yMap Maps y-values into pixel coordinates.
canvasRect Contents rectangle of the canvas
from Index of the first sample to be painted
to Index of the last sample to be painted. If to < 0 the series will be painted to its last sample.

See Also:

drawSeries()

void QwtPlotSpectroCurve::drawSeries (QPainter *painter, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect, intfrom, intto) const [virtual]

Draw a subset of the points

Parameters:

painter Painter
xMap Maps x-values into pixel coordinates.
yMap Maps y-values into pixel coordinates.
canvasRect Contents rectangle of the canvas
from Index of the first sample to be painted
to Index of the last sample to be painted. If to < 0 the series will be painted to its last sample.

See Also:

drawDots()

Implements QwtPlotSeriesItem.

double QwtPlotSpectroCurve::penWidth () const

Returns:

Pen width used to draw a dot

See Also:

setPenWidth()

int QwtPlotSpectroCurve::rtti () const [virtual]

Returns:

QwtPlotItem::Rtti_PlotSpectroCurve

Reimplemented from QwtPlotItem.

void QwtPlotSpectroCurve::setColorMap (QwtColorMap *colorMap)

Change the color map

Often it is useful to display the mapping between intensities and colors as an additional plot axis, showing a color bar.

Parameters:

colorMap Color Map

See Also:

colorMap(), setColorRange(), QwtColorMap::color(), QwtScaleWidget::setColorBarEnabled(), QwtScaleWidget::setColorMap()

void QwtPlotSpectroCurve::setColorRange (const QwtInterval &interval)

Set the value interval, that corresponds to the color map

Parameters:

interval interval.minValue() corresponds to 0.0, interval.maxValue() to 1.0 on the color map.

See Also:

colorRange(), setColorMap(), QwtColorMap::color()

void QwtPlotSpectroCurve::setPaintAttribute (PaintAttributeattribute, boolon = true)

Specify an attribute how to draw the curve

Parameters:

attribute Paint attribute
on On/Off /sa PaintAttribute, testPaintAttribute()

void QwtPlotSpectroCurve::setPenWidth (doublepenWidth)

Assign a pen width

Parameters:

penWidth New pen width

See Also:

penWidth()

void QwtPlotSpectroCurve::setSamples (const QVector< QwtPoint3D > &samples)

Initialize data with an array of samples.

Parameters:

samples Vector of points

void QwtPlotSpectroCurve::setSamples (QwtSeriesData< QwtPoint3D > *data)

Assign a series of samples

setSamples() is just a wrapper for setData() without any additional value - beside that it is easier to find for the developer.

Parameters:

data Data

Warning:

The item takes ownership of the data object, deleting it when its not used anymore.

bool QwtPlotSpectroCurve::testPaintAttribute (PaintAttributeattribute) const

Returns:

True, when attribute is enabled

See Also:

PaintAttribute, setPaintAttribute()

Author

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Info

Thu Dec 11 2014 Version 6.1.2 Qwt User's Guide