def extractBodyPart(data, bodyPart, requiredFeatures=None):
requiredFeatures = checkRequiredFeatures(requiredFeatures,
{'time': None, 'freq': None, 'peak': None, 'vel': None})
features = dict()
features.update(fds.getSimpleFreqDomainFeatures(data,
requiredFeatures['freq']))
features.update(tds.getSimpleTimeDomainFeatures(data,
requiredFeatures['time']))
features.update(ps.getSimplePeakFeatures(data,
requiredFeatures['peak']))
features.update(vs.getVelocityFeatures(data,
requiredFeatures['vel']))
features = dict((bodyPart + '.' + key, features[key])
for key in features.keys())
return features
