seaborn.objects.Norm

class seaborn.objects.Norm(func='max', where=None, by=None, percent=False)

Divisive scaling on the value axis after aggregating within groups.

Parameters:

funcstr or callable

Function called on each group to define the comparison value.

wherestr

Query string defining the subset used to define the comparison values.

bylist of variables

Variables used to define aggregation groups.

percentbool

If True, multiply the result by 100.

Examples

By default, this transform scales each group relative to its maximum value:

(
    so.Plot(healthexp, x="Year", y="Spending_USD", color="Country")
    .add(so.Lines(), so.Norm())
    .label(y="Spending relative to maximum amount")
)

Use where to constrain the values used to define a baseline, and percent to scale the output:

(
    so.Plot(healthexp, x="Year", y="Spending_USD", color="Country")
    .add(so.Lines(), so.Norm(where="x == x.min()", percent=True))
    .label(y="Percent change in spending from 1970 baseline")
)