Questions tagged [multidimensional-array]
Multidimensional-arrays can be described as multi-dimensional tables. Each index used in order to find a given element is called a dimension.
multidimensional-array
35,626
questions
1
vote
2
answers
67
views
PHP recursive loop to filter out item and subitem based on key, value condition
I'm facing a multi dimenstions array filter problem.
Let's say I had more than 3, or 50 levels of arrays inside an array, how can we filter them based on a key, value pair?
for Example:
$arr = [
...
- 13
2
votes
3
answers
59
views
Appending multiple dictionaries to specific key of a nested dictionary
I want to append different dictionaries having the key as the meal_name and having total_calories and total_protein as a tuple being the value of the dictionary without overwriting the original ...
-1
votes
0
answers
21
views
How to optimize fetching and caching grid data [closed]
I'm developing a hypothetical cloud spreadsheet application. The spreadsheet is your typical two dimensional sheet of cells. Whatever range of cells a user is viewing will be fetched and cached. The ...
- 2,978
1
vote
1
answer
49
views
how to use string to be key of array in php
I have array that need to call.
$array['first_key']['second_key'] = 'value';
$keys = "['first_key']['second_key']";
I want to call it $array.$key that like $array['first_key']['second_key'].
...
2
votes
4
answers
90
views
Using Excel O365, How to use unique on two columns, sort, and copy over related data?
I have a 4 column, dynamic row array with names, process, order #, and dates. The array is dynamic and being collected using FILTER() function and grabbing the 4 columns I want from a table on a ...
- 23
-3
votes
0
answers
55
views
Program ends abruptly iterating a 2-D vector using an iterator [closed]
I am updating a distance matrix which computes the distance between two nodes in an unweighted graph if the edge is present in the edges vector.
Edges is a 2-D vector with each element of size 2 where ...
0
votes
1
answer
50
views
Template parameters for c++ multidimentional array [duplicate]
Can someone explain how the following base template and specialization is instantiated to produce the correct result? I'm particularly unclear on how the <U[N]> template parameter is interpreted....
- 161
0
votes
1
answer
57
views
Apply function with a vector as second argument
I have the following code, I wish you could explain me what the function apply with c(1,3) as second argument does.
I completely understand the final result, I just don't understand how it works.
The ...
- 97
0
votes
0
answers
29
views
Implementing Cell Overflow Handling in a 2D List with Python
This is a small part of a project where I'm having an issue.
Suppose you are given the following:
|-----|-----|-----|-----|-----|
| -2 | 2 | -3 | 0 | 0 |
|-----|-----|-----|-----|-----|
| 0 ...
- 41
-1
votes
1
answer
29
views
Javascript exporting multi dimentioanl array results in some values to be empty
I am coding a practice react application in which I am exporting a primitive array with a separate file named data.js
export const data = [
{
type:"multiple",
difficulty:"easy&...
- 31
2
votes
1
answer
30
views
Printing 2D array in MIPS
I have been using a few other posts on here to try and figure out what I am doing wrong but I am stuck and could use some help. I am making a game that has an 8x8 "board" (2d array) similar ...
- 21
2
votes
2
answers
45
views
Dynamic dimensional array storing in Matlab
I have M many 2-D matrices of dimension (2 x n_1 ,2 x n_2 , 2 x n_3,..., 2 x n_N ). I can store them in a MATLAB cell-array of dim (2 x N x M) where N = {n_1 , n_2 , n_3,..., n_N} and n_1,n_2,n_3 are ...
- 69
1
vote
1
answer
74
views
How do I effectively compute pairwise quantities in numpy?
I want to compute pairwise quantities, e.g. distances between two points.
A simple example would be
import numpy as np
N = 9
x = np.linspace(0,1,N)
y = np.abs(x - x[:,None]) # pairwise 1d eucdlidian ...
- 23
3
votes
2
answers
62
views
Traverse over tree type structured data uing JavaScript
I have a data set having parent and nested children in it. The purpose of this data is to traverse over parent to -> child1 to-> Child1Child .....
-> child2 to -> child1 to -> child2 ...
- 329
0
votes
0
answers
8
views
SemanticKITTI rotation troubles
The pose data provided with the SemanticKITTI (https://semantic-kitti.org/) LIDAR dataset is formatted unusually. For instance, they use a 'yzx' coordinate system instead of the standard 'xyz'. My ...
- 1