logo
down
shadow

Average of each two columns in an array


Average of each two columns in an array

By : Dimuth Jayasuriya
Date : November 21 2020, 11:01 PM
wish help you to fix your issue I have an array as follows: , How about using convolution?
code :
arr=[2 3 4 5 6 7 8 9 1 2 3 4];

arr2=[1 1];

A=conv(arr,arr2)/2;

mean2=A(2:2:end-1)

plot(mean2)
arr=[2 3 4 5 6 7 8 9 1 2 3 4 6];

arr2=[1 1];

A=conv(arr,arr2)/2;

if mod(length(arr),2) == 1;

   mean2=[A(2:2:end-1) arr(end)]

else 
   mean2=[A(2:2:end-1)]
end

plot(mean2)


Share : facebook icon twitter icon
2 Dimensional array and Print out average of the Columns and Rows

2 Dimensional array and Print out average of the Columns and Rows


By : tweetbro
Date : March 29 2020, 07:55 AM
this will help Ok, I'll see what I can add.
Defines are not written like that, and by convention should be all upper case
code :
#define ROWS 3
#define COLUMNS 5
float **array;
ROWS * sizeof(float*)
COLUMNS * sizeof(float)
for(row 1..3)
    array[row] = malloc(...)
    for(col 1..5)
        fscanf(value)
        array[row][col] = value
Displaying Average of 3 Different Columns in Array

Displaying Average of 3 Different Columns in Array


By : roboman6
Date : March 29 2020, 07:55 AM
I hope this helps . IndexOutOfRangeException is thrown when you attempt to access an element of an array that doesn't exist.
Note that you have initialized scores as follows:
code :
uint[,] scores = new uint[,] { };
scoresRowTotal[i] += scores[i, j];
uint[,] scores = new uint[,] { {0, 1}, {2, 3} };
[0] [1]
[2] [3]
Average of bidimensional array's columns with array.map()

Average of bidimensional array's columns with array.map()


By : S_J
Date : March 29 2020, 07:55 AM
wish help you to fix your issue I have an array that looks like this: , You can use reduce() and forEach() to return result.
code :
var array = [
  [1, 3, 9],
  [4, 6, 8],
  [3, 7, 5],
  [2, 8, 4]
];

var sums = array.reduce(function(r, e, i) {
  e.forEach((a, j) => r[j] = (r[j] || 0) + a)
  return r;
}, [])

console.log(sums)
var array = [
  [1, 3, 9],
  [4, 6, 8],
  [3, 7, 5],
  [2, 8, 4]
];

var sums = array.reduce(function(r, e, i) {
  e.forEach((a, j) => r[j] = (r[j] || 0) + a)
  if (i == array.length - 1) r = r.map(el => el / array.length);
  return r;
}, [])

console.log(sums)
Average a columns in a 2D array with functional programming

Average a columns in a 2D array with functional programming


By : VBnoob21
Date : March 29 2020, 07:55 AM
wish helps you As an exercise in functional programming, I've decided to go through one of my projects and replace functions containing for loops with Array.prototype's higher order functions such as map and reduce. , Try this example with reduce and forEach functions:
code :
let a = [
    [0.6,  4.0, -0.5],
    [3.0, -0.5, -0.1],
    [1.0, -0.2, -0.8],
    [7.0, -0.5, -0.8]
];

let b = a.reduce((acc, cur) => {
    cur.forEach((e, i) => acc[i] = acc[i] ? acc[i] + e : e);
    return acc;
}, []).map(e => e / a.length);

console.log(b);
let a = [
    [0.6,  4.0, -0.5],
    [3.0, -0.5, -0.1],
    [1.0, -0.2, -0.8],
    [7.0, -0.5, -0.8]
];

let b = a[0].map((col, i) => a.map(row => row[i]).reduce((acc, c) => acc + c, 0) / a.length);

console.log(b);
Take average of columns in a numpy array

Take average of columns in a numpy array


By : Paolo Rigobello
Date : March 29 2020, 07:55 AM
it helps some times I have taken data from a csv file using numpy. numpy array has dimensions : 100*20. How do i take average of columns (say col 3,5,8) and replace them with a new column containing average of these 3 cols
Related Posts Related Posts :
  • update field of array object inside nested object
  • Sending a row of a multidimensional array to a worksheet
  • Typescript Array insert non-duplicate item
  • how to ascending sort a multiple array of SPARK RDD by any column in scala?
  • Casting an anonymous array initializer list
  • creating hash from array in perl
  • Swift 3 Generics: How to Find The Common Set of Two Generic Arrays
  • Calculate subtotal using tuples and 3 UIPickerviews
  • Matlab: insert multiple elements at specified positions
  • how to get Int from elements of dictionary array. xcode
  • Python/Pandas: Array (back) to DataFrame
  • Permanent Data and Prepare For Segue
  • Difference between array<<element and array.push(element)? or string<<"something" and string+"
  • Index array with multiple ranges
  • In VBA how do I get the "ActiveChart.FullSeriesCollection(i).Values" to point to a specific line of a 2 dimens
  • List in dictionary as a template definition
  • How to sort string array in descending order in Bash?
  • Pass variable with spaces into array
  • How to unpack an array from php into Swift via JSON
  • How to insert data in codename one db using prepared statement?
  • Find kth smallest element from two sorted arrays
  • How to filter through multiple "Arrays" at once?
  • Array inside a type in julia
  • PowerShell dictionary of arrays?
  • Excel VBA Non-Contiguous Array User Defined Function Fix
  • Skip to next in array for batch based off of IF condition
  • Efficient to delete all substrings of other elements within an array in Ruby
  • Go: Loops over sorted array, sort.Sort used as value
  • Finite difference derivative of an array
  • How to convert multidimensional array into a 2 dimensional array?
  • ECMAScript 2015 Features (Math + Number + String + Object APIs)?
  • match, index, and concatenate to just one cell
  • Push directory timestamps into an array sorted by date in bash
  • Go: Deserialize array string
  • How do I check if two string arrays are equal?
  • How to have upper case methods in ruby
  • Array of structs with this Dictionary in Swift
  • Check one array's elements contains in another array
  • VBA part of two dimensional Array into combobox.List
  • convert a csv file to json where one of the fields can be converted into an array
  • Generate all unique items in a list using right shift bitwise operator
  • How to deserialize dodgy JSON (with improperly quoted strings, and missing brackets)?
  • $lookup result sorted using a key from another array
  • Slicing Multidimensional Array by a variable
  • Find if given longitude, latitude pair lies in any of the polygon in MongoDB
  • Need help sorting file list in perl based on datestamp in filename
  • Searching a string array of names and grades and listing names associated with grade
  • Golang: array is empty after call a method that adds items to the array
  • Fill an array from keyboard in Java
  • How to save 2d array data permanently using userdefaults.standard
  • how to access an arraylist with json objects in a repeat control
  • shadow
    Privacy Policy - Terms - Contact Us © soohba.com