Array functions

Aggregation

sum(collection)	Returns a staircase.Stairs object representing the sum of multiple step functions.
mean(collection)	Returns a staircase.Stairs object representing the mean of multiple step functions.
median(collection)	Returns a staircase.Stairs object representing the median of multiple step functions.
min(collection)	Returns a staircase.Stairs object representing the minimum of multiple step functions.
max(collection)	Returns a staircase.Stairs object representing the maximum of multiple step functions.
agg(collection, func)	Returns a staircase.Stairs object representing the aggregate of multiple step functions.
logical_or(collection)	Returns a boolean-valued step function resulting from a logical-or operation.
logical_and(collection)	Returns a boolean-valued step function resulting from a logical-and operation.
plot(collection[, ax])	Plots a collection of Stairs instances to a single axes

Transform functions

sample(collection, x)	Takes a collection of Stairs instances and evaluates their values across a set of points.
limit(collection, x[, side])	Takes a collection of Stairs instances and evaluates their limits across a set of points.
cov(collection[, where])	Calculates the covariance matrix for a collection of Stairs instances
corr(collection[, where])	Calculates the correlation matrix for a collection of Stairs instances

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