55
votes
2
answers
2.6K
views
Two-sample Kolmogorov-Smirnov Test in Python Scipy
I can't figure out how to do a Two-sample KS test in Scipy. After reading the documentation scipy kstest
58
votes
4
answers
2.7K
views
How to transform numpy.matrix or array to scipy sparse matrix
For SciPy sparse matrix, one can use todense() or toarray() to transform to NumPy matrix or array. What are th
62
votes
13
answers
1.2K
views
ImportError: No module named scipy
I am using Python 2.7 and trying to get PyBrain to work. But I get this error even though scipy is installed
63
votes
9
answers
631
views
How to calculate probability in a normal distribution given mean & standard deviation?
How to calculate probability in normal distribution given mean, std in Python? I can always explicitly code my
48
votes
7
answers
1K
views
Histogram Matplotlib
So I have a little problem. I have a data set in scipy that is already in the histogram format, so I have the
55
votes
1
answers
346
views
How can I perform two-dimensional interpolation using scipy?
This Q&A is intended as a canonical(-ish) concerning two-dimensional (and multi-dimensional) interpolatio
61
votes
13
answers
535
views
ImportError in importing from sklearn: cannot import name check_build
I am getting the following error while trying to import from sklearn: >>> from sklearn import svm T
56
votes
9
answers
698
views
Numpy Resize/Rescale Image
I would like to take an image and change the scale of the image, while it is a numpy array. For example I hav
57
votes
6
answers
2.3K
views
How to create a density plot in matplotlib?
In R I can create the desired output by doing: data = c(rep(1.5, 7), rep(2.5, 2), rep(3.5, 8), rep(
56
votes
14
answers
1.5K
views
Multiple linear regression in Python
I can't seem to find any python libraries that do multiple regression. The only things I find only do sim
57
votes
6
answers
1.4K
views
Numpy: Divide each row by a vector element
Suppose I have a numpy array: data = np.array([[1,1,1],[2,2,2],[3,3,3]]) and I have a corresponding "vector
51
votes
5
answers
1K
views
Compute a confidence interval from sample data
I have sample data which I would like to compute a confidence interval for, assuming a normal distribution. I
57
votes
16
answers
1.6K
views
scipy.misc module has no attribute imread?
I am trying to read an image with scipy. However it does not accept the scipy.misc.imread part. What could be
57
votes
9
answers
1.7K
views
Peak-finding algorithm for Python/SciPy
I can write something myself by finding zero-crossings of the first derivative or something, but it seems like
61
votes
10
answers
962
views
Fitting empirical distribution to theoretical ones with Scipy (Python)?
INTRODUCTION: I have a list of more than 30,000 integer values ranging from 0 to 47, inclusive, e.g.[0,0,0,0,.
55
votes
8
answers
2.6K
views
How to normalize a NumPy array to within a certain range?
After doing some processing on an audio or image array, it needs to be normalized within a range before it can
43
votes
7
answers
2.6K
views
How to do exponential and logarithmic curve fitting in Python? I found only polynomial fitting
I have a set of data and I want to compare which line describes it best (polynomials of different orders, expo
54
votes
11
answers
1.5K
views
Is there a library function for Root mean square error (RMSE) in python?
I know I could implement a root mean squared error function like this: def rmse(predictions, targets): re
56
votes
28
answers
1.7K
views
Moving average or running mean
Is there a SciPy function or NumPy function or module for Python that calculates the running mean of a 1D arra
62
votes
10
answers
2.7K
views
How to smooth a curve in the right way?
Lets assume we have a dataset which might be given approximately by import numpy as np x = np.linspace(0,2*np
