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bundles / scipy latest / scipy / stats / _continuous_distns / trapezoid_gen

class

scipy.stats._continuous_distns:trapezoid_gen

source: /scipy/stats/_continuous_distns.py :9909

Signature

class   trapezoid_gen ( momtype = 1 ,  a = None ,  b = None ,  xtol = 1e-14 ,  badvalue = None ,  name = None ,  longname = None ,  shapes = None ,  seed = None )

Members

Summary

A trapezoidal continuous random variable.

Extended Summary

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Notes

The trapezoidal distribution can be represented with an up-sloping line from loc to (loc + c*scale), then constant to (loc + d*scale) and then downsloping from (loc + d*scale) to (loc+scale). This defines the trapezoid base from loc to (loc+scale) and the flat top from c to d proportional to the position along the base with 0 <= c <= d <= 1. When c=d, this is equivalent to triang with the same values for loc, scale and c. The method of [1] is used for computing moments.

trapezoid takes and as shape parameters.

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The standard form is in the range [0, 1] with c the mode. The location parameter shifts the start to loc. The scale parameter changes the width from 1 to scale.

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Aliases

  • scipy.stats._continuous_distns.trapezoid_gen