Numpy array

Gary Herron gherron at digipen.edu
Sat May 19 13:08:59 EDT 2018


The "indexing" page of the documentation might help you with this:

https://docs.scipy.org/doc/numpy-1.14.0/reference/arrays.indexing.html


On 05/18/2018 09:50 PM, sharan.basappa at gmail.com wrote:
> This is regarding numpy array. I am a bit confused how parts of the array are being accessed in the example below.
>
> 1 import scipy as sp
> 2 data = sp.genfromtxt("web_traffic.tsv", delimiter="\t")
> 3 print(data[:10])
> 4 x = data[:,0]
> 5 y = data[:,1]
>
> Apparently, line 3 prints the first 10 entries in the array
> line 4 & 5 is to extract all rows but only 1st and second columns alone for x and y respectively.
>
> I am confused as to how data[:10] gives the first 10 rows while data[:,0] gives all rows
>

-- 
Dr. Gary Herron
Professor of Computer Science
DigiPen Institute of Technology
(425) 895-4418




More information about the Python-list mailing list