All Questions
158 questions
1
vote
1
answer
224
views
Converting float64 array to uint16 (Python)
I'm having trouble in a data type conversion from float64 to uint16. If I have an array of floats and I try to convert it with
array_uint16 = array_float64.astype(np.uint16)
is there a sort of "...
4
votes
0
answers
101
views
Why the outputs of a*a + a*a and a**2 + a**2 is different in Python?
a = 1e200
print(a)
b = a*a + a*a
print(b)
c = a**2 + a**2
print(c)
output:
1e+200
inf
Traceback (most recent call last):
File "d:\TUD\Materials\SPE\Session1\overflowerror.py", line 7, ...
- 41
0
votes
1
answer
37
views
When converting a string to an int, how do I check if there will be overflow?
I am trying to convert a string to a 32-bit int and I want to clamp numbers smaller than -2^31 to -2^31 and numbers bigger than 2^31-1 to 2^31-1.
This is my code so far, but for some reason it is not ...
- 1
0
votes
0
answers
56
views
Overflow in solve_bvp during "simple" differential equation system
I would like to solve the following system of differential equation:
d(phi)/dz= Rcl*i
d(i)/dz = i0*exp(phi*2.3/b)
I tried to solve this using solve_bvp from scipy and it didn't work. To check if a ...
- 1
2
votes
2
answers
93
views
Confusing on output result of numpy.power function
I am trying to learn numpy. At this page, I saw following code:
import numpy as np
arr1 = np.array([10, 20, 30, 40, 50, 60])
arr2 = np.array([3, 5, 6, 8, 2, 33])
newarr = np.power(arr1, arr2)
print(...
- 615
0
votes
0
answers
24
views
Avoiding numerical overflow in unavoidable exponent calculation
I am having difficulty doing a Nernst modification to convert a voltage to a concentration gradient.
I have attempted this:
def calc_voltage_offset(self,config):
Voltage = 350 #Voltage in mV, ...
1
vote
1
answer
139
views
Why does numpy handle overflows inconsistently?
How come the following test works fine on Windows, but fails on Linux:
import numpy as np
print(f"Numpy Version: {np.__version__}")
# version A
versionA = np.eye(4)
versionA[:3, 3] = 2**32 ...
- 3,260
0
votes
0
answers
23
views
How can I set my x higher? I need it to be at least 1000e8, but the I get a overflow error
How do I prevent the Overflow Error? It only happens once I set my x higher than 400e4 I need it to go at least to 1000e5
I need the derivative of the function f and after that I would like to plot it ...
0
votes
0
answers
23
views
Python Overflow while trying to code the RSA cryptosystem
I'm trying to code the cryptosystem RSA for school and i have an overflow problem.
It is happening when i'm trying to decode de message by doing (m^d)%n.
- 1
2
votes
2
answers
231
views
Avoid overflow in random matrix multiplication in python
I have to multiply many (about 700) matrices with a random element (in the following, I'm using a box distribution) in python:
#define parameters
μ=2.
σ=2.
L=700
#define random matrix
T=[None]*L
...
- 23
0
votes
1
answer
251
views
Pandas - OverflowError : Python int too large to convert to C long
Data = pd.read_csv(file)
I'm getting overflow error:python int too large to convert to C long, while read a csv file of 6.25GB.
Working fine with files less than 2GB.
1
vote
1
answer
30
views
Overflow encountered when evaluating string
I got this error when I am trying to evaluate an expression f(x1, x2, ...) from a string based on given x1, x2, ...
I = eval(string)
<string>:1: RuntimeWarning: overflow encountered in ...
- 21
-3
votes
1
answer
175
views
Normaliztion in linear regression (gradient descent) [closed]
I am writing a simple (gradient descent) code for linear regression with multi variables data set, my problem was that when I was testing the code I noticed that the cost still decreasing after 5 ...
1
vote
2
answers
701
views
How to add scrollbar to Python Folium popup?
How do you add a vertical scrollbar to a Python Folium map popup? I have too much information to display that the popup spans the entire screen currently.
1
vote
1
answer
75
views
(34, 'Numerical result out of range') calculating Annual Percentage Rate with scipy
I am trying to solve Annual Percentage Rate in Python using scipy library and newton method. At some point Python reaches max Pythonic float range solving this equation:
Here is example code with ...
- 143