cma.purecma.CMAESDataLogger

Examples

The data may come from fmin or CMAES and the simulation may still be running in a different Python shell.

Use the default logger from CMAES:

>>> try: import cma.purecma as pcma
... except ImportError: import purecma as pcma
>>> es = pcma.CMAES(3 * [0.1], 1)
>>> isinstance(es.logger, pcma.CMAESDataLogger)  # type(es.logger)
True
>>> while not es.stop():
...     X = es.ask()
...     es.tell(X, [pcma.ff.elli(x) for x in X])
...     es.logger.add(es)  # doctest: +SKIP
>>> es.logger.save()
>>> # es.logger.plot()  #

Load and plot previously generated data:

>>> logger = pcma.CMAESDataLogger().load()
>>> logger.filename == "_CMAESDataLogger_datadict.py"
True

>>> # logger.plot()

TODO: the recorded data are kept in memory and keep growing, which may well lead to performance issues for (very?) long runs. Ideally, it should be possible to dump data to a file and clear the memory and also to downsample data to prevent plotting of long runs to take forever. "], 'key': " or "]}" is the place where to prepend/append new data in the file.