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Showing posts with the label Numpy

Python Numpy On Solaris, Blas Slow Or Not Linked?

Matrix-Matrix multiplies are very slow on my Solaris install (running on a sparc server) compared t… Read more Python Numpy On Solaris, Blas Slow Or Not Linked?

Pycharm Community 3.1.1 And Numpy, "'matrix' Is Not Callable", But The Code Works

I have the following code: import numpy as np if __name__ == '__main__': m = np.matrix… Read more Pycharm Community 3.1.1 And Numpy, "'matrix' Is Not Callable", But The Code Works

How To Check If A Coordinate Pair (lat,lon) Exists In A Coordinate Grid?

I have an algorithm that computes shapes using geographic coordinates when certain conditions are s… Read more How To Check If A Coordinate Pair (lat,lon) Exists In A Coordinate Grid?

Iterating Over A Numpy Array With Enumerate Like Function

I want to numpy arrays into some of my code. I am trying to iterate over an array. import numpy as … Read more Iterating Over A Numpy Array With Enumerate Like Function

Python 3.7 Numpy Load Valueerror: Cannot Reshape Array Of Size 5218288 Into Shape (1974,3,128,128,3)

Traceback (most recent call last): File '3dagn.py', line 468, in hybrid_network() … Read more Python 3.7 Numpy Load Valueerror: Cannot Reshape Array Of Size 5218288 Into Shape (1974,3,128,128,3)

Filter A N-d Numpy Array And Keep Only Specific Elements

I'm dealing with a large N-D numpy array. I would like to keep only those elements present in a… Read more Filter A N-d Numpy Array And Keep Only Specific Elements

Slicing A Different Range At Each Index Of A Multidimensional Numpy Array

I have an m x n numpy array arr, and for each column of arr, I have a given range of rows that I wa… Read more Slicing A Different Range At Each Index Of A Multidimensional Numpy Array

Max In A Sliding Window In Numpy Array

I want to create an array which holds all the max()es of a window moving through a given numpy arra… Read more Max In A Sliding Window In Numpy Array

Calculate Mean Over Discrete Functions With Different Amount Of Sampling Points

I have a set of measurement curves (represented as an array of x and an array of y values). I need … Read more Calculate Mean Over Discrete Functions With Different Amount Of Sampling Points

Vectorizing Outer Loop Of Euclidean Distance Using Numpy On Multi-dimensional Data

I have a 2D matrix of values. Each row is a data point. data = np.array( [[2, 2, 3], [4, 2, … Read more Vectorizing Outer Loop Of Euclidean Distance Using Numpy On Multi-dimensional Data

Keyerror: Class 'numpy.object_' While Downloading Image Dataset Using Imread

I am trying to download images from URLs using imread. After downloading about 700 images, I see Ke… Read more Keyerror: Class 'numpy.object_' While Downloading Image Dataset Using Imread

Using Python Range Objects To Index Into Numpy Arrays

I've seen it once or twice before, but I can't seem to find any official docs on it: Using … Read more Using Python Range Objects To Index Into Numpy Arrays

Cannot Import Seaborn

I have a problem with importing seaborn. I recently installed 'anaconda' on my PC and tried… Read more Cannot Import Seaborn

Numpy.memmap: Bogus Memory Allocation

I have a python3 script that operates with numpy.memmap arrays. It writes an array to newly generat… Read more Numpy.memmap: Bogus Memory Allocation

Python Pandas Dictionary With Numpy Arrays

I have a pandas df like the following: import pandas as pd import numpy as np data = np.random.rand… Read more Python Pandas Dictionary With Numpy Arrays

Python: Faster Local Maximum In 2-d Matrix

Given: R is an mxn float matrix Output: O is an mxn matrix where O[i,j] = R[i,j] if (i,j) is a loca… Read more Python: Faster Local Maximum In 2-d Matrix

Logarithmically Spaced Integers

Say I have a 10,000 pt vector that I want to take a slice of only 100 logarithmically spaced points… Read more Logarithmically Spaced Integers

Irr Library Is Only Good If The Pay Period And Compound Period Is In Years (engineering Economy)

http://docs.scipy.org/doc/numpy-1.10.0/reference/generated/numpy.irr.html The link above works for … Read more Irr Library Is Only Good If The Pay Period And Compound Period Is In Years (engineering Economy)

Replace Elements In Numpy Array Avoiding Loops

I have a quite large 1d numpy array Xold with given values. These values shall be replaced accordi… Read more Replace Elements In Numpy Array Avoiding Loops

Returning A Vector Of Class Elements In Numpy

I can use numpy's vectorize function to create an array of objects of some arbitrary class: imp… Read more Returning A Vector Of Class Elements In Numpy