On Fri, Jan 26, 2018 at 5:48 PM, Chris Barker <chris.bar...@noaa.gov> wrote:
> On Fri, Jan 26, 2018 at 2:35 PM, Allan Haldane <allanhald...@gmail.com> > wrote: > >> As I remember, numpy has some fairly convoluted code for array creation >> which tries to make sense of various nested lists/tuples/ndarray >> combinations. It makes a difference for structured arrays and object >> arrays. I don't remember the details right now, but I know in some cases >> the rule is "If it's a Python list, recurse, otherwise assume it is an >> object array". >> > > that's at least explainable, and the "try to figure out what the user > means" array cratinon is pretty much an impossible problem, so what we've > got is probably about as good as it can get. > >> > These points make me think that instead of a `.totuple` method, this >> > might be more suitable as a new function in np.lib.recfunctions. >> > >> > I don't seem to have that module -- and I'm running 1.14.0 -- is this a >> > new idea? >> >> Sorry, I didn't specify it correctly. It is "numpy.lib.recfunctions". >> > > thanks -- found it. > > >> Also, the functions in that module encourage "pandas-like" use of >> structured arrays, but I'm not sure they should be used that way. I've >> been thinking they should be primarily used for binary interfaces >> with/to numpy, eg to talk to C programs or to read complicated binary >> files. >> > > that's my use-case. And I agree -- if you really want to do that kind of > thing, pandas is the way to go. > > I thought recarrays were pretty cool back in the day, but pandas is a much > better option. > > So I pretty much only use structured arrays for data exchange with C > code.... > My impression is that this turns into a deprecate recarrays and supporting recfunction issue. recfunctions and the associated function from matplotlib.mlab where explicitly designed for using structured dtypes as dataframe_like. (old question: does numpy have a sort_rows function now without detouring to structured dtype views?) Josef <all code needs to be rewritten every 5 to 10 years.> > > -CHB > > -- > > Christopher Barker, Ph.D. > Oceanographer > > Emergency Response Division > NOAA/NOS/OR&R (206) 526-6959 voice > 7600 Sand Point Way NE (206) 526-6329 fax > Seattle, WA 98115 (206) 526-6317 main reception > > chris.bar...@noaa.gov > > _______________________________________________ > NumPy-Discussion mailing list > NumPy-Discussion@python.org > https://mail.python.org/mailman/listinfo/numpy-discussion > >
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