LinearAutoScaler Class Reference

Automatic beautifying of linear scales.

#include <qwt3d_autoscaler.h>

Inheritance diagram for LinearAutoScaler:

List of all members.

Protected Member Functions
	LinearAutoScaler ()
	LinearAutoScaler (std::vector< double > &mantisses)
AutoScaler *	clone () const
int	execute (double &a, double &b, double start, double stop, int ivals)

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Constructor & Destructor Documentation

LinearAutoScaler

(

)

[protected]

Initializes with an {1,2,5} sequence of mantissas.

LinearAutoScaler

(

std::vector< double > &

mantisse

)

[explicit, protected]

Initialize with interval [0,1] and one requested interval.

val mantisse A increasing ordered vector of values representing mantisse values between 1 and 9.

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Member Function Documentation

AutoScaler* clone

(

)

const [inline, protected, virtual]

Returns a new heap based object utilized from qwt3d_ptr.

Implements AutoScaler.

int execute	(	double &	a,
		double &	b,
		double	start,
		double	stop,
		int	ivals
	)			[protected, virtual]

Does the actual scaling.

Returns:

Number of intervals after rescaling. This will in the most cases differ from the requested interval number! Always >0.

Parameters:

	a	Start value after scaling (always >= start)
	b	Stop value after scaling (always <= stop)
	start	Start value
	stop	Stop value
	ivals	Requested intervals

Returns:

Number of intervals after autoscaling

If the given interval has zero length the function returns the current interval number and a and b remain unchanged.

Implements AutoScaler.

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

• qwt3d_autoscaler.h
• qwt3d_autoscaler.cpp

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