On 2, Nov, 2012, at 11:49 AM, Ulrich Eckhardt <ulrich.eckha...@dominolaser.com> wrote:
> Am 02.11.2012 09:20, schrieb Martin Hewitson: >> Well, here we disagree. Suppose I have a class which encapsulates >> time-series data. Below is a list of the absolute minimum methods one >> would have to process that data. > [...] > > 'abs' 'acos' 'asin' 'atan' 'atan2' 'average' 'cohere' 'conv' 'corr' > > 'cos' 'cov' 'cpsd' 'detrend' 'dft' 'diff' 'downsample' 'exp' > > 'export' 'fft' 'fftfilt' 'filter' 'filtfilt' 'find' 'heterodyne' > > 'hist' 'imag' 'integrate' 'interp' 'join' 'le' 'lincom' 'ln' 'load' > > 'log' 'log10' 'lscov' 'max' 'mean' 'median' 'min' 'minus' 'mode' > > 'mpower' 'mrdivide' 'mtimes' 'ne' 'norm' 'or' 'plot' 'plus' > > 'polyfit' 'power' 'psd' 'rdivide' 'real' 'resample' 'rms' 'round' > > 'save' 'scale' 'search' 'select' 'sin' 'smoother' 'sort' > > 'spectrogram' 'split' 'sqrt' 'std' 'sum' 'sumjoin' 'svd' 'tan' 'tfe' > > 'timeaverage' 'times' 'timeshift' 'transpose' 'uminus' 'upsample' > > 'zeropad' > > > Just as a suggestion, you can separate these into categories: > > 1. Things that modify the data, yielding a different (although derived) data > set, e.g. import/load, split, join, plus, minus, zeropad. > 2. Things that operate on the data without modifying it, e.g. export/save, > average, find, plot, integrate. > > The latter can easily be removed from the class. Since they don't touch the > content, they can't invalidate internals and can't break encapsulation. > > For the former, providing general means to construct or modify the data (like > e.g. adding records or joining sequences) is also all that needs to remain > inside the class to ensure internal consistency, everything else can be built > on top of these using external functions. > Thank you all so much for your thoughts and suggestions. I need to absorb all of this and decide on the best approach in this case. Thanks again, Martin > > Uli > > > > -- > http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
