LinearTransform Class

class flowkit.transforms.LinearTransform(param_t, param_a)

Parametrized linear transformation, implemented as defined in the GatingML 2.0 specification:

flin(x, T, A) = (x + A) / (T + A)

This transformation linearly maps values from the interval [−A, T] to the interval [0, 1]. However, it is defined for all x ∈ R including outside the [−A, T] interval.

Parameters:

• param_t – parameter for the top of the linear scale (e.g. 262144)

• param_a – parameter for the offset, controls the bottom of the scale

apply(events)

Apply transform to given events.

Parameters:

events – NumPy array of FCS event data

Returns:

NumPy array of transformed events

inverse(events)

Apply the inverse transform to given events.

Parameters:

events – NumPy array of FCS event data

Returns:

NumPy array of inversely transformed events