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Showing posts with the label Arrays

In Python, How Do I Sort An Array Of Json Objects By A Value In Each Object?

I'm using Python 3.7. I have an array of JSON objects. I would like to sort the array of obje… Read more In Python, How Do I Sort An Array Of Json Objects By A Value In Each Object?

Find First Element Of Numpy Ndarray Of Unknown Shape

Is there an easy way to pull out the first item of an ndarray if you don't know the shape of th… Read more Find First Element Of Numpy Ndarray Of Unknown Shape

Numpy: Create A 1d Array Of Numpy Arrays When All Arrays Have The Same Length

I want to be able to convert an existing 2D array to a 1D array of arrays. The only way I can find … Read more Numpy: Create A 1d Array Of Numpy Arrays When All Arrays Have The Same Length

Numpy.genfromtxt Imports Tuples Instead Of Arrays

I am trying to learn Python and Numpy, so please bear with me. I am using numpy.genfromtxt to impor… Read more Numpy.genfromtxt Imports Tuples Instead Of Arrays

Multiplication/division Of 2d Numpy Arrays To Produce 3d Array

I am looking for a fast (ie vectorized) method to replace the following loop. I have 2 numpy arrays… Read more Multiplication/division Of 2d Numpy Arrays To Produce 3d Array

Slice Border Of 2d Numpy Array By Integer Value

I would like to slice a 2D NumPy array by an integer value, but I cannot find a way to do this prop… Read more Slice Border Of 2d Numpy Array By Integer Value

Python - How To Split An Input String Into An Array?

I am trying to create a very simple program for averaging numbers. And one part of it involves conv… Read more Python - How To Split An Input String Into An Array?

Basic Numpy Array Value Assignment

As a small exercise before i start playing with numeric code in python I am trying to make an LDLT … Read more Basic Numpy Array Value Assignment

Ctypes: How Do I Define An Array Of A Structure As A Field Of Another Structure?

I have a C structure that looks like the following: typedef struct _DXYZ { DXYZSTATE State[]; }… Read more Ctypes: How Do I Define An Array Of A Structure As A Field Of Another Structure?

Longest Snake Sequence In An Array

Question : A set of numbers separated by space is passed as input. The program must print the large… Read more Longest Snake Sequence In An Array

Numpy 2d Array Extrude

I am new to numpy ndarrays and i couldn`t find any solution for my issue. I have say 10 files of fl… Read more Numpy 2d Array Extrude

Get Access To The First Element Of An Array

def main(): reading = read_file(); display(reading); def read_file(): with open('e… Read more Get Access To The First Element Of An Array

Iterating Over A Numpy Array And Operating On Each Element

I have a numpy array of size 8x8. Here is the numpy array: QuantTable = np.array([[16, 11 ,10, 16, … Read more Iterating Over A Numpy Array And Operating On Each Element

How Can I Fill The Remainder Of The First Column Of An N X N Matrix With 1's, Once A Certain Condition Is Met In My For Loop?

I have an N x N matrix filled with 0's as follows: str1 = 'Patrick' str2 = 'Garrick… Read more How Can I Fill The Remainder Of The First Column Of An N X N Matrix With 1's, Once A Certain Condition Is Met In My For Loop?

Numpy Broadcasting With 3d Arrays

Is it possible to apply numpy broadcasting (with 1D arrays), x=np.arange(3)[:,np.newaxis] y=np.aran… Read more Numpy Broadcasting With 3d Arrays

Create Dict Using A Grouping Column In An Array And Assigning The Remaining Columns To Values Of The Dict

I have a type(s1) = numpy.ndarray. I want to create a dictionary by using the first column of s1 as… Read more Create Dict Using A Grouping Column In An Array And Assigning The Remaining Columns To Values Of The Dict

Swapping The Dimensions Of A Numpy Array

I would like to do the following: for i in dimension1: for j in dimension2: for k in dimensio… Read more Swapping The Dimensions Of A Numpy Array

What Is The Solution Python Gives Me "valueerror: Setting An Array Element With A Sequence."

I am running the code below but it's giving me an error about arrays. I have tried to find a so… Read more What Is The Solution Python Gives Me "valueerror: Setting An Array Element With A Sequence."

Converting A 1d Array Into A 2d Class-based Matrix In Python

I'm using a multi-class classifier, so in order to evaluate it after testing, I need the predic… Read more Converting A 1d Array Into A 2d Class-based Matrix In Python

Get Mean Value Avoiding Nan Using Numpy In Python

How to calculate mean value of an array (A) avoiding nan? import numpy as np A = [5 nan nan … Read more Get Mean Value Avoiding Nan Using Numpy In Python