The docs say that usemask is a kwd arg, but it's not implemented. Is
this an oversight or are the docs wrong and the TimeSeries object must be a masked array? Using recent trunk. In [1]: import scikits.timeseries as ts In [2]: ts.__version__ Out[2]: '0.91.3' Skipper _______________________________________________ SciPyUser mailing list [hidden email] http://mail.scipy.org/mailman/listinfo/scipyuser 
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> The docs say that usemask is a kwd arg, but it's not implemented. Is
> this an oversight or are the docs wrong and the TimeSeries object must > be a masked array? do you have masked data? I suggest to omit the argument. To my experience: If you load data with missing values (missing_values) a masked array is created automatically. If not, the array will be regular. _______________________________________________ SciPyUser mailing list [hidden email] http://mail.scipy.org/mailman/listinfo/scipyuser 
On Sat, Mar 13, 2010 at 3:55 AM, Tim Michelsen
<[hidden email]> wrote: >> The docs say that usemask is a kwd arg, but it's not implemented. Is >> this an oversight or are the docs wrong and the TimeSeries object must >> be a masked array? > do you have masked data? > > I suggest to omit the argument. > > To my experience: > If you load data with missing values (missing_values) a masked array is > created automatically. If not, the array will be regular. > from StringIO import StringIO import scikits.timeseries as ts s = '"dates","GDP","CONS","INV","GOVT"\n"1947I",100.2,33.4,33.4,33.4\n"1947II",100.2,33.4,33.4,33.4' s = StringIO(s) romans = {"I":1,"II":2,"III":3,"IV":4} dateconverter = lambda x: ts.Date(freq='Q', year=int(x.split("")[0].strip("\"")), quarter=romans[x.split("")[1].strip("\"")]) data = ts.tsfromtxt(s, delimiter=",", dtype=None, dateconverter=dateconverter, names=True, usemask=True) #TypeError: tsfromtxt() got an unexpected keyword argument 'usemask' data = ts.tsfromtxt(s, delimiter=",", dtype=None, dateconverter=dateconverter, names=True) hasattr(data,'mask') # True print ts.tsfromtxt.__doc__ <snip> usemask : bool, optional If True, return a masked array. If False, return a regular array. <snip> Skipper _______________________________________________ SciPyUser mailing list [hidden email] http://mail.scipy.org/mailman/listinfo/scipyuser 
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> data = ts.tsfromtxt(s, delimiter=",", dtype=None,
I never really cared about whether a masked array is created or not.
> dateconverter=dateconverter, names=True, usemask=True) > #TypeError: tsfromtxt() got an unexpected keyword argument 'usemask' > > data = ts.tsfromtxt(s, delimiter=",", dtype=None, > dateconverter=dateconverter, names=True) > hasattr(data,'mask') > # True > > print ts.tsfromtxt.__doc__ > <snip> > usemask : bool, optional > If True, return a masked array. > If False, return a regular array. > <snip> Does this really make a difference in your work? Let's wait for a comment from Pierre GM? you may also check: data.data data.series _______________________________________________ SciPyUser mailing list [hidden email] http://mail.scipy.org/mailman/listinfo/scipyuser 
On Mar 14, 2010, at 6:32 PM, Tim Michelsen wrote:
>> data = ts.tsfromtxt(s, delimiter=",", dtype=None, >> dateconverter=dateconverter, names=True, usemask=True) >> #TypeError: tsfromtxt() got an unexpected keyword argument 'usemask' >> >> data = ts.tsfromtxt(s, delimiter=",", dtype=None, >> dateconverter=dateconverter, names=True) >> hasattr(data,'mask') >> # True >> >> print ts.tsfromtxt.__doc__ >> <snip> >> usemask : bool, optional >> If True, return a masked array. >> If False, return a regular array. >> <snip> > I never really cared about whether a masked array is created or not. > Does this really make a difference in your work? > Let's wait for a comment from Pierre GM? All, I only have episodic connectability these days, sorry for the lag in answers. In np.genfromtxt, `usemask` lets you choose whether you want a standard ndarray (False) or a MaskedArray (True). In `scikits.timeseries.tsfromtxt`, the output is always a TimeSeries, which is a subclass of MaskedArray. Therefore, `usemask` would always be True. No need for a keyword argument that you can't modify, hence the error message. _______________________________________________ SciPyUser mailing list [hidden email] http://mail.scipy.org/mailman/listinfo/scipyuser 
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> which is a subclass of MaskedArray. Therefore, `usemask` would always
> be True. No need for a keyword argument that you can't modify, hence > the error message. Then, why is this argument not removed? Because of the inheritance from genfromtxt? Maybe it's worth mentioning this in the docstring. _______________________________________________ SciPyUser mailing list [hidden email] http://mail.scipy.org/mailman/listinfo/scipyuser 
On Mar 15, 2010, at 6:25 PM, Tim Michelsen wrote:
>> which is a subclass of MaskedArray. Therefore, `usemask` would always >> be True. No need for a keyword argument that you can't modify, hence >> the error message. > Then, why is this argument not removed? I don't follow you. The `usemask` argument is not a valid argument for `tsfromtxt` (check the function signature), that's why it's not recognized. There's nothing to remove. > Because of the inheritance from genfromtxt? In practice, genfromtxt has more arguments than tsfromtxt. > > Maybe it's worth mentioning this in the docstring. Ah OK. The docstring is wrong. I'll correct that _______________________________________________ SciPyUser mailing list [hidden email] http://mail.scipy.org/mailman/listinfo/scipyuser 
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