GClasses::GPlotLabelSpacer Class Reference

Detailed Description

If you need to place grid lines or labels at regular intervals (like 1000, 2000, 3000, 4000... or 20, 25, 30, 35... or 0, 2, 4, 6, 8, 10...) this class will help you pick where to place the labels so that there are a reasonable number of them, and they all land on nice label values.

#include <GPlot.h>

Public Member Functions
	GPlotLabelSpacer (double min, double max, int maxLabels)
	maxLabels specifies the maximum number of labels that it can ever decide to use. (It should be just smaller than the number of labels that would make the graph look too crowded.) More...
int	count ()
	Returns the number of labels that have been picked. It will be a value smaller than maxLabels. More...
double	label (int index)
	Returns the location of the n'th label (where 0 <= n < count()) More...

Protected Attributes
int	m_count
double	m_spacing
int	m_start

Constructor & Destructor Documentation

GClasses::GPlotLabelSpacer::GPlotLabelSpacer	(	double	min,
		double	max,
		int	maxLabels
	)

maxLabels specifies the maximum number of labels that it can ever decide to use. (It should be just smaller than the number of labels that would make the graph look too crowded.)

Member Function Documentation

int GClasses::GPlotLabelSpacer::count

(

)

Returns the number of labels that have been picked. It will be a value smaller than maxLabels.

double GClasses::GPlotLabelSpacer::label

(

int

index

)

Returns the location of the n'th label (where 0 <= n < count())

Member Data Documentation

int GClasses::GPlotLabelSpacer::m_count

protected

double GClasses::GPlotLabelSpacer::m_spacing

protected

int GClasses::GPlotLabelSpacer::m_start

protected