DeltaTimeScaleEngine

class DeltaTimeScaleEngine(scaleDraw=None)

Bases: PyQt4.Qwt5.Qwt.QwtLinearScaleEngine

static disableInAxis(plot, axis, scaleDraw=None, scaleEngine=None)

convenience method that will disable this engine in the given axis. Note that it changes the ScaleDraw as well.

Parameters:

• plot (QwtPlot) – the plot to change
• axis (Axis) – the id of the axis
• scaleDraw (QwtScaleDraw) – Scale draw to use. If None given, a FancyScaleDraw will be set
• scaleEngine (QwtScaleEngine) – Scale draw to use. If None given, a Qwt5.QwtLinearScaleEngine will be set

divideScale(x1, x2, maxMajSteps, maxMinSteps, stepSize)

Reimplements Qwt5.QwtLinearScaleEngine.divideScale

Return type:QwtScaleDiv Returns:a scale division whose ticks are aligned with the natural delta time units

static enableInAxis(plot, axis, scaleDraw=None, rotation=None)

convenience method that will enable this engine in the given axis. Note that it changes the ScaleDraw as well.

Parameters:

• plot (QwtPlot) – the plot to change
• axis (Axis) – the id of the axis
• scaleDraw (QwtScaleDraw) – Scale draw to use. If None given, the current ScaleDraw for the plot will be used if possible, and a TaurusTimeScaleDraw will be set if not
• rotation (float or None) – The rotation of the labels (in degrees, clockwise-positive)

static getDefaultAxisLabelsAlignment(axis, rotation)

return a “smart” alignment for the axis labels depending on the axis and the label rotation

Parameters:

• axis (Axis) – the axis
• rotation (float) – The rotation (in degrees, clockwise-positive)

Return type:

Alignment

Returns:

an alignment

scaleDraw()

setScaleDraw(scaleDraw)