[AstroPy] Summing an array

[Homeier, Derek]

On 11 Jul 2022, at 3:03 pm, Rudolf Baer <rbaer25 at gmail.com> wrote:
> 
> I have not been able to sum an array; the array is created as follows
> 
This is really a pure numpy issue, but it looks like something in your numpy installation is broken or overwritten in the `np` namespace.

> rpflux = np.array(rpflux, dtype=float)
> rpflux=np.zeros(len(rptime),dtype='float64')

The above is redundant btw. as np.genfromtxt will create, populate and return the array on the fly
(and simply replace your previously created objects).

> rpflux=np.genfromtxt(path,delimiter=',',dtype="float64",autostrip=True,skip_header=137,skip_footer=0, usecols=(19))
> print(rpflux.astype('float64'))
> [3140.           nan 2770.     3080.     3170.     3050.     3060.
> 3100.     2990.     3120.     3060.           nan 3100.     3070.
> 3020.           nan 3200.     3150.     3350.     2990.     2910.
> 2920.     3030.     3000.     2800.     2980.     2860.     2840.
> 2610.     2650.     2610.     2650.     2490.     2490.     2540.
> 2510.     2470.           nan       nan   35.           nan 3099.
>       nan ] 
> 
> 
> print (np.sum(rpflux))
> and 
> print (np.sum([rpflux]))
> result in
> 'numpy.ndarray' object is not callable'
> 
Could you post some details on your Numpy installation as well?

print(np.version.version)
print(np.sum.__class__)
print(np.sum.__name__)
print(np.sum.__module__)
print(rpflux.sum())

On another note, you’ll probably want to use `np.nansum()` on those particular data.

HTH
					Derek