celeries.series.Var.subst

Var.subst(x, Q, power=None, negative=False)

Replace a variable by a series.

Parameters:

xVar

Variable to be replaced.

QSeries

Series to be substituted to x.

powerint or None

If a power is specified, x**(k*power+r) is replaced by Q**k * x**r, where k is an integer (which can be negative if negative is True), and r is an integer of the same sign as power and smaller in absolute value.

negativebool

Whether to allow negative multiple of power.

Returns:

RSeries

Series where x has been replaced by Q.