def autoScale(self, maxNumSteps, x1, x2, stepSize):
"""
Align and divide an interval
:param int maxNumSteps: Max. number of steps
:param float x1: First limit of the interval (In/Out)
:param float x2: Second limit of the interval (In/Out)
:param float stepSize: Step size
:return: tuple (x1, x2, stepSize)
.. seealso::
:py:meth:`setAttribute()`
"""
interval = QwtInterval(x1, x2)
interval = interval.normalized()
interval.setMinValue(interval.minValue() - self.lowerMargin())
interval.setMaxValue(interval.maxValue() + self.upperMargin())
if self.testAttribute(QwtScaleEngine.Symmetric):
interval = interval.symmetrize(self.reference())
if self.testAttribute(QwtScaleEngine.IncludeReference):
interval = interval.extend(self.reference())
if interval.width() == 0.0:
interval = self.buildInterval(interval.minValue())
stepSize = divideInterval(interval.width(), max([maxNumSteps, 1]),
self.base())
if not self.testAttribute(QwtScaleEngine.Floating):
interval = self.align(interval, stepSize)
x1 = interval.minValue()
x2 = interval.maxValue()
if self.testAttribute(QwtScaleEngine.Inverted):
x1, x2 = x2, x1
stepSize = -stepSize
return x1, x2, stepSize
def autoScale(self, maxNumSteps, x1, x2, stepSize):
"""
Align and divide an interval
:param int maxNumSteps: Max. number of steps
:param float x1: First limit of the interval (In/Out)
:param float x2: Second limit of the interval (In/Out)
:param float stepSize: Step size
:return: tuple (x1, x2, stepSize)
.. seealso::
:py:meth:`setAttribute()`
"""
interval = QwtInterval(x1, x2)
interval = interval.normalized()
interval.setMinValue(interval.minValue()-self.lowerMargin())
interval.setMaxValue(interval.maxValue()+self.upperMargin())
if self.testAttribute(QwtScaleEngine.Symmetric):
interval = interval.symmetrize(self.reference())
if self.testAttribute(QwtScaleEngine.IncludeReference):
interval = interval.extend(self.reference())
if interval.width() == 0.:
interval = self.buildInterval(interval.minValue())
stepSize = divideInterval(interval.width(),
max([maxNumSteps, 1]), self.base())
if not self.testAttribute(QwtScaleEngine.Floating):
interval = self.align(interval, stepSize)
x1 = interval.minValue()
x2 = interval.maxValue()
if self.testAttribute(QwtScaleEngine.Inverted):
x1, x2 = x2, x1
stepSize = -stepSize
return x1, x2, stepSize
def autoScale(self, maxNumSteps, x1, x2, stepSize):
interval = QwtInterval(x1, x2)
interval = interval.normalized()
interval.setMinValue(interval.minValue()-self.lowerMargin())
interval.setMaxValue(interval.maxValue()+self.upperMargin())
if self.testAttribute(QwtScaleEngine.Symmetric):
interval = interval.symmetrize(self.reference())
if self.testAttribute(QwtScaleEngine.IncludeReference):
interval = interval.extend(self.reference())
if interval.width() == 0.:
interval = self.buildInterval(interval.minValue())
stepSize = divideInterval(interval.width(),
max([maxNumSteps, 1]), self.base())
if not self.testAttribute(QwtScaleEngine.Floating):
interval = self.align(interval, stepSize)
x1 = interval.minValue()
x2 = interval.maxValue()
if self.testAttribute(QwtScaleEngine.Inverted):
x1, x2 = x2, x1
stepSize = -stepSize
return x1, x2, stepSize
def autoScale(self, maxNumSteps, x1, x2, stepSize):
interval = QwtInterval(x1, x2)
interval = interval.normalized()
interval.setMinValue(interval.minValue() - self.lowerMargin())
interval.setMaxValue(interval.maxValue() + self.upperMargin())
if self.testAttribute(QwtScaleEngine.Symmetric):
interval = interval.symmetrize(self.reference())
if self.testAttribute(QwtScaleEngine.IncludeReference):
interval = interval.extend(self.reference())
if interval.width() == 0.:
interval = self.buildInterval(interval.minValue())
stepSize = divideInterval(interval.width(), max([maxNumSteps, 1]),
self.base())
if not self.testAttribute(QwtScaleEngine.Floating):
interval = self.align(interval, stepSize)
x1 = interval.minValue()
x2 = interval.maxValue()
if self.testAttribute(QwtScaleEngine.Inverted):
x1, x2 = x2, x1
stepSize = -stepSize
return x1, x2, stepSize
