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QwtCPointerData

NAME

QwtCPointerData -

SYNOPSIS

Inherits QwtData.

Detailed Description

Data class containing two pointers to memory blocks of doubles.

Definition at line 144 of file qwt_data.h.

Public Member Functions

QwtCPointerData (const double *x, const double *y, size_t size)

QwtCPointerData & operator= (const QwtCPointerData &)

virtual QwtData * copy () const

virtual size_t size () const

virtual double x (size_t i) const

virtual double y (size_t i) const

const double * xData () const

const double * yData () const

virtual QwtDoubleRect boundingRect () const

Constructor & Destructor Documentation

QwtCPointerData::QwtCPointerData (const double * x, const double * y, size_t size)

Constructor

Parameters:

x Array of x values
y Array of y values
size Size of the x and y arrays

Warning:

The programmer must assure that the memory blocks referenced by the pointers remain valid during the lifetime of the QwtPlotCPointer object.

See also:

QwtPlotCurve::setData(), QwtPlotCurve::setRawData()

Definition at line 281 of file qwt_data.cpp.

Referenced by copy().

Member Function Documentation

QwtCPointerData & QwtCPointerData::operator= (const QwtCPointerData &)

Assignment.

Definition at line 290 of file qwt_data.cpp.

References d_size, d_x, and d_y.

QwtData * QwtCPointerData::copy () const [virtual]

Returns:

Pointer to a copy (virtual copy constructor)

Implements QwtData.

Definition at line 344 of file qwt_data.cpp.

References QwtCPointerData().

size_t QwtCPointerData::size () const [virtual]

Returns:

Size of the data set

Implements QwtData.

Definition at line 302 of file qwt_data.cpp.

Referenced by boundingRect().

double QwtCPointerData::x (size_t i) const [virtual]

Return the x value of data point i

Parameters:

i Index

Returns:

x X value of data point i

Implements QwtData.

Definition at line 313 of file qwt_data.cpp.

double QwtCPointerData::y (size_t i) const [virtual]

Return the y value of data point i

Parameters:

i Index

Returns:

y Y value of data point i

Implements QwtData.

Definition at line 324 of file qwt_data.cpp.

const double * QwtCPointerData::xData () const

Returns:

Array of the x-values

Definition at line 330 of file qwt_data.cpp.

const double * QwtCPointerData::yData () const

Returns:

Array of the y-values

Definition at line 336 of file qwt_data.cpp.

QwtDoubleRect QwtCPointerData::boundingRect () const [virtual]

Returns the bounding rectangle of the data. If there is no bounding rect, like for empty data the rectangle is invalid: QwtDoubleRect::isValid() == false

Reimplemented from QwtData.

Definition at line 354 of file qwt_data.cpp.

References size().

Author

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