---
name: "QwtArrayData"
section: "3"
platform: "linux"
package: "libqwt5-doc"
version: "5.2.3-1"
release: "Debian 10 (Buster)"
platforms: ["linux"]
url: "https://new.carta.tech/QwtArrayData"
---

# QwtArrayData(3)

## NAME

QwtArrayData -

## SYNOPSIS

`#include <qwt_data.h>`

Inherits **QwtData**.

### Public Member Functions

**QwtArrayData** (const QwtArray\< double \> &**x**, const QwtArray\< double \> &**y**)\
 **QwtArrayData** (const double \***x**, const double \***y**, size\_t **size**)\
 virtual QwtDoubleRect **boundingRect** () const \
 virtual **QwtData** \* **copy** () const \
 **QwtArrayData** & **operator=** (const **QwtArrayData** &)\
 virtual size\_t **size** () const \
 virtual double **x** (size\_t i) const \
 const QwtArray\< double \> & **xData** () const \
 virtual double **y** (size\_t i) const \
 const QwtArray\< double \> & **yData** () const \

### Additional Inherited Members

## Detailed Description

Data class containing two QwtArray\<double\> objects.

## Constructor & Destructor Documentation

### QwtArrayData::QwtArrayData (const QwtArray\< double \> &x, const QwtArray\< double \> &y)

Constructor

**Parameters:**

*x* Array of x values \
 *y* Array of y values

**See also:**

**QwtPlotCurve::setData()**

### QwtArrayData::QwtArrayData (const double \*x, const double \*y, size\_tsize)

Constructor

**Parameters:**

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

**See also:**

**QwtPlotCurve::setData()**

## Member Function Documentation

### QwtDoubleRect QwtArrayData::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**.

### QwtData \* QwtArrayData::copy () const` [virtual]`

**Returns:**

Pointer to a copy (virtual copy constructor)

Implements **QwtData**.

### size\_t QwtArrayData::size () const` [virtual]`

**Returns:**

Size of the data set

Implements **QwtData**.

### double QwtArrayData::x (size\_ti) const` [virtual]`

Return the x value of data point i

**Parameters:**

*i* Index

**Returns:**

x X value of data point i

Implements **QwtData**.

### const QwtArray\< double \> & QwtArrayData::xData () const

**Returns:**

Array of the x-values

### double QwtArrayData::y (size\_ti) const` [virtual]`

Return the y value of data point i

**Parameters:**

*i* Index

**Returns:**

y Y value of data point i

Implements **QwtData**.

### const QwtArray\< double \> & QwtArrayData::yData () const

**Returns:**

Array of the y-values

## Author

Generated automatically by Doxygen for Qwt User's Guide from the source code.