QwtScaleArithmetic - Man Page

Arithmetic including a tolerance.

Synopsis

#include <qwt_scale_engine.h>

Static Public Member Functions

static double ceilEps (double value, double intervalSize)
static double floorEps (double value, double intervalSize)
static double divideEps (double intervalSize, double numSteps)
Divide an interval into steps.
static double divideInterval (double intervalSize, int numSteps, uint base)

Detailed Description

Arithmetic including a tolerance.

Member Function Documentation

double QwtScaleArithmetic::ceilEps (double value, double intervalSize) [static]

Ceil a value, relative to an interval

Parameters

value Value to be ceiled
intervalSize Interval size

Returns

Rounded value

See also

floorEps()

double QwtScaleArithmetic::divideEps (double intervalSize, double numSteps) [static]

Divide an interval into steps. $stepSize = (intervalSize - intervalSize * 10e^{-6}) / numSteps$

Parameters

intervalSize Interval size
numSteps Number of steps

Returns

Step size

double QwtScaleArithmetic::divideInterval (double intervalSize, int numSteps, uint base) [static]

Calculate a step size for a given interval

Parameters

intervalSize Interval size
numSteps Number of steps
base Base for the division ( usually 10 )

Returns

Calculated step size

double QwtScaleArithmetic::floorEps (double value, double intervalSize) [static]

Floor a value, relative to an interval

Parameters

value Value to be floored
intervalSize Interval size

Returns

Rounded value

See also

floorEps()

Author

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Info

Mon Jun 1 2020 Version 6.1.5 Qwt User's Guide