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(
59
votes
3
answers
2.5K
views
Confusion between numpy, scipy, matplotlib and pylab
Numpy, scipy, matplotlib, and pylab are common terms among they who use python for scientific computation. I
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
54
votes
2
answers
1.4K
views
Should I use scipy.pi, numpy.pi, or math.pi?
In a project using SciPy and NumPy, should I use scipy.pi, numpy.pi, or math.pi?
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
58
votes
8
answers
1.2K
views
Installing SciPy and NumPy using pip
I'm trying to create required libraries in a package I'm distributing. It requires both the SciPy an
61
votes
10
answers
964
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
57
votes
7
answers
2.3K
views
Does Python SciPy need BLAS?
numpy.distutils.system_info.BlasNotFoundError: Blas (http://www.netlib.org/blas/) libraries not found.
60
votes
8
answers
2.4K
views
Specifying and saving a figure with exact size in pixels
Say I have an image of size 3841 x 7195 pixels. I would like to save the contents of the figure to disk, resul
56
votes
7
answers
1.2K
views
How to add a new row to an empty numpy array
Using standard Python arrays, I can do the following: arr = [] arr.append([1,2,3]) arr.append([4,5,6]) # arr
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
62
votes
15
answers
1.6K
views
Installing SciPy with pip
It is possible to install NumPy with pip using pip install numpy. Is there a similar possibility with SciPy?
54
votes
17
answers
3.1K
views
Calculating Pearson correlation and significance in Python
I am looking for a function that takes as input two lists, and returns the Pearson correlation, and the signif
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
