Basic Matlab to python question

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H
H 2023-1-25
评论： H 2023-1-27
Hi all,
I am a 'native Matlaber' attempting to run some things on python. I was wondering if you could help me with a seemingly simple question.
how would I convert the Matlab line
array([6:10,1:4])
into python?
I am aware this is not directly a Matlab question, but any help would be apreciated.
Thank you!
  2 个评论
Pavel
Pavel 2023-1-25
What exactly do you mean?
Your code looks like a Python code to me, do you want this now as Matlab code?
If so I recommend this tutorial series:
https://www.mathworks.com/help/matlab/learn_matlab/matrices-and-arrays.html
H
H 2023-1-25
编辑：H 2023-1-25
Apolagies, I could be clearer, I mean the Matlab code where I select some of the end values to be at the beggining, and select some of the beggining values to go at the end in an array.
How would I do this is python?

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采纳的回答

Al Danial
Al Danial 2023-1-27
The Python equivalent is much more verbose than matlab's [6:10,1:4]:
In : import numpy as np
In : np.hstack((np.arange(6,11), np.arange(1,5)))
Out: array([ 6, 7, 8, 9, 10, 1, 2, 3, 4])
NumPy's hstack() function does a horizontal concatenation of arrays. The other quirk is that one must specify arange(a, b+1) to get the equivalent of matlab's a:b.

更多回答（1 个）

Askic V
Askic V 2023-1-25
This is what you probably want:
import numpy as np
arr = np.array([1, 2, 3, 4, 5])
arr2 = np.arange(0,10,2)
print(arr)
print(arr2)
print(arr2[1:4])
This leads to the following output:
[1 2 3 4 5]
[0 2 4 6 8]
[2 4 6]
  1 个评论
H
H 2023-1-25
This is a good step but not quite what I am looking for.
My end goal is to get an array like-
[6 7 8 9 10 1 2 3 4 5]
(example for simplsty, im actually looking to rearange a bigger array, only selcting the last few and first few values e.g. [ 111 112 113 1 2 3]).
Thanks for the help though.

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