How to Swap Column according to odd/even numbers?

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hanif hamden
hanif hamden 2020-11-24
评论： hanif hamden 2020-11-24
Hi everyone, I would like to arrange my column according to odd and even numbers. Example data is shown below, I want to arrange column 1(even numbers) while column2 (odd numbers). Can anyone help me on how to arrange / swap into the according column.
nPASS1 nPASS166
nPASS1 nPASS64
nPASS101 nPASS12
nPASS101 nPASS88
nPASS103 nPASS166
nPASS103 nPASS90
nPASS114 nPASS229
nPASS114 nPASS51
nPASS12 nPASS127
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James Tursa
James Tursa 2020-11-24
How is this stored? Cell array of char strings? Array of strings? Or ...???
hanif hamden
hanif hamden 2020-11-24
This is how I read the data from textfile. I attached the file as well
clc; clear all;close all;
filename = 'XOpairs.txt';
fileID = fopen(filename);
C = textscan(fileID,'%s %s ');
fclose(fileID);

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回答（1 个）

KSSV
KSSV 2020-11-24
This is basic in MATLAB. You should read about indexing an array.
Example:
A = rand (10.1); % array for demo
E = A (2: 2: end); % get even indices number
O = A (1: 2: end); % GEt odd indices numbersY
You may also have cell arrays. For cell arrays you need to use {} for indexing.
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KSSV
KSSV 2020-11-24
Let it be. If he is not satisfied, he will ask the question again. There is no harm right?

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