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Graph Class Reference

#include <Graph.h>

List of all members.

Public Member Functions
	Graph (QWidget *parent=0, const char *name=0)
	~Graph (void)
void	setTitle (const char *title)
void	setDescriptions (const vector< const char * > &desc)
void	setDisplayType (GraphDisplayType type)
void	clear (void)
void	setValues (const vector< vector< double > > &plots)
void	addValue (const vector< double > &plotitem)
void	setDisplaySize (unsigned int display_size)
unsigned int	getDisplaySize (void) const
void	setColor (const QColor &col)
void	setColor (const vector< QColor > &colors)
void	setMax (const double maximum)
void	setMargins (unsigned int margin_bars=2, unsigned int margin_left=4, unsigned int margin_right=4, unsigned int margin_up=4, unsigned int margin_down=4)
Protected Member Functions
void	paintEvent (QPaintEvent *ev)
Private Member Functions
void	plotFunction (const vector< double > &plot, const QColor &col, const vector< const char * > &desc)
const QColor &	selectColor (const unsigned int idx) const
Private Attributes
GraphDisplayType	type
double	max
vector< vector< double > >	plots
vector< QColor >	colors
vector< const char * >	desc
const char *	title
unsigned int	display_size
QPainter *	painter
unsigned int	margin_left
unsigned int	margin_right
unsigned int	margin_down
unsigned int	margin_up
unsigned int	margin_bars

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Detailed Description

Function plotting widget.

Shows a number of discrete input vectors as multiple function plots within one widget. Rather unflexible and trimmed for use within the neural network result GUI part. Function plots can plot only positive values, while Barchart and Waveform objects can plot negatives, too.

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Constructor & Destructor Documentation

Graph::Graph (  QWidget *    parent = 0, const char *    name = 0 )

Default QT-style constructor. Parameters: parent  The QT parent widget. name  Optional name of the widget.

Graph::~Graph (  void    )

Default destructor.

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Member Function Documentation

void Graph::addValue (  const vector< double > &    plotitem )

Add a plot item to the end of the current plot content. Parameters: plotitem  A single plot item to be added.

void Graph::clear (  void    )

Clear the plot data and associated colors.

unsigned int Graph::getDisplaySize (  void    )  const

Get the current amount to be plotted. Note: Only applicable for Function type plots. Returns: Number of fixed items plotted.

void Graph::paintEvent (  QPaintEvent *    ev )  [protected]

QT paintEvent method, used to redraw the modified screen content. Parameters: ev  Event.

void Graph::plotFunction (  const vector< double > &    plot, const QColor &    col, const vector< const char * > &    desc )  [private]

Plot a single graph. Parameters: plot  Plot data to display. col  Color to display plot with. desc  (Optional) description to be displayed with each value of the graph. Only used for Barchart and BarchartPositive type of graphs.

const QColor & Graph::selectColor (  const unsigned int    idx )  const [private]

Select the appropiate color. Parameters: idx  The index of the graph that should be displayed. Returns: The color that was set for the graph.

void Graph::setColor (  const vector< QColor > &    colors )

Setter for individual plot colors. Parameters: colors  Vector of individual colors for each plot.

void Graph::setColor (  const QColor &    col )

Setter for the default plot color. Parameters: col  Default color to use in the chart.

void Graph::setDescriptions (  const vector< const char * > &    desc )

Set the bar descriptions. The placement and meaning of the descriptions are interpreted according to the graph type. For Waveform and Function type graphs the text is displayed at the right border, after each graph trail. The array of descriptions refers to one description per graph. For Barchart and BarchartPositive type of graphs however, the descriptions refer to single bars and will be displayed right under each bar. Parameters: desc  Ordered description strings.

void Graph::setDisplaySize (  unsigned int    display_size )

Set a fixed amount of values to plot. Note: Only applicable for Function plots. When more than display size items are given to plot, only the last display size items are shown, the first are discarded. Parameters: display_size  Number of plot entries to display. Zero means automatic scaling.

void Graph::setDisplayType (  GraphDisplayType    type )

Set the display type of the widget. Parameters: type  The visualization type.

void Graph::setMargins (  unsigned int    margin_bars = 2, unsigned int    margin_left = 4, unsigned int    margin_right = 4, unsigned int    margin_up = 4, unsigned int    margin_down = 4 )

Set the margins to be used for the chart. All margins are specified as pixels. Parameters: margin_bars  The margin between individual bars within a Barchart type plot. For all other types, this is ignored. margin_left  Left border. margin_right  Right border. margin_up  Upper border. margin_down  Downward border.

void Graph::setMax (  const double    maximum )  [inline]

Setter for the maximum display value. For the Waveform display, the negative value is used as minimum. Parameters: maximum  The maximal displayed value.

void Graph::setTitle (  const char *    title )

Set the graph title. Parameters: title  Title string.

void Graph::setValues (  const vector< vector< double > > &    plots )

Setter for the function plot content. Parameters: plots  Vector of (possibly negative) values. Note that all plots have to be of the same element count.

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Member Data Documentation

vector<QColor> Graph::colors [private]

Respective color for each plot. When .size() is zero, the default color is used (black).

vector<const char *> Graph::desc [private]

Descriptions for individual bars, used only with Barchart and BarchartPositive type of graphs.

unsigned int Graph::display_size [private]

Amount of plot items to display (only used for Function plots) Zero means scale appropiatly.

unsigned int Graph::margin_bars [private]

Margin between individual bars (only Barchart types).

unsigned int Graph::margin_down [private]

Margin to the downward widget border.

unsigned int Graph::margin_left [private]

Margin to the left widget border.

unsigned int Graph::margin_right [private]

Margin to the right widget border.

unsigned int Graph::margin_up [private]

Margin to the upward widget border.

double Graph::max [private]

The maximum displayable value. Used for all three chart types.

QPainter* Graph::painter [private]

The QT painter needed to (re-) draw the canvas. Initialized once upon object construction and used from there.

vector<vector <double> > Graph::plots [private]

The values to be displayed. Can be negative when negative is true.

const char* Graph::title [private]

The overall plot title. Once set through the constructor.

GraphDisplayType Graph::type [private]

Type of display used to visualize data.

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The documentation for this class was generated from the following files:

• Graph.h
• Graph.cpp

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