Unary operations on TimeSeries

[mvcisback]

Given the current API (v0.3.1) there does not seem to be a straightforward way to do a unary operation.

Suppose one wishes to negate a boolean valued signal. One option is:

import traces

x = traces.TimeSeries([(0, False), (1, True)])
x.operation(x, lambda val, _: not val)

but this seems somewhat clunky.

Better might be

import traces

x = traces.TimeSeries([(0, True), (1, False)])
x.map(lambda val: not val)

Which could be syntatic sugar for:

traces.TimeSeries((t, not val) for (t, v) in x))

[vlsd]

You're right, this would be a nice addition!

[mvcisback]

@vlsd
I've actually written a library inspired by traces that supports this operation:

https://github.com/mvcisback/DiscreteSignals