1

answer

I know it can be silly but I can not find how to do it. I want to know how I can calculate the opposite polynomial created in Numpy regardless of its degree .
Example that does not work for me:
import numpy as np
p0 = np.poly1d([2., 0.,...

asked by
19.04.2016 / 21:22

1

answer

I am writing a program that I read a matrix and if the value of the element is less than a value rewrite it as zero and if it is greater than the value, leave it as such. I do this:
lis=open('ej.txt','r')
A=lis.read()
A=np.genfromtxt(StringIO(...

asked by
23.08.2016 / 02:05

1

answer

Good afternoon everyone, I'm trying to create an array with numpy that contains the slope between each of the points made with the arrays x e y to finally graph them with matplotlib .
These are the steps that I am c...

asked by
25.01.2016 / 00:33

3

answers

I have the following dataframe:
import pandas as pd
import numpy as np
data = pd.date_range('20180101', periods=300)
df = pd.DataFrame(np.random.randn(300, 5), index=data,
columns=['open', 'high', 'low', 'close', 'volume'])
I...

asked by
27.12.2018 / 14:54

1

answer

np.empty is considered a junk vector in which it serves to know what type of data contains the vector and a np.array returns an array, but in which case it is more convenient to use each of them.

asked by
12.12.2017 / 22:23

1

answer

I have problems when trying to stagger a 5x5 matrix. First I made a null line go to the last row of the matrix (it worked), then I tried to make a row with the highest index fall below the one with the lowest index, but on the line:
if pivos_i...

asked by
14.10.2017 / 20:05

1

answer

Sorry that seems like a very simple doubt, but it is the first time that I do this and I am having difficulties. I have created with spyder, a software that brings anaconda, a calculator of systems of equations, in which I have used the numpy mo...

asked by
07.05.2018 / 21:38

2

answers

Good!
Let's see I have a function that generates a list ( List A ) of coordinates in numpy .
[[1,1][1,6][3,5][5,7]] < - (for example)
And I have another list ( B list ) with more coordinates (Also in numpy ) format...

asked by
27.01.2017 / 10:19

1

answer

Hello again I am with the same error but in a different place.
Veran I have the following code
import matplotlib.pyplot as plt
import numpy as np
from py_expression_eval import *
def f(exp, var, x0):
p = Parser()
p.ops2['^'] = n...

asked by
03.03.2017 / 01:49

1

answer

I was doing matrix exercises with numpy, but apparently it generated an error in the final answer:
As we can see the final result of Z*Z is:
[[9,4,1],
[1,0,1],
[1,4,9],]
But after a suspicion I compared the results by hand w...

asked by
13.07.2016 / 06:13