How to repeat elements of array in MATLAB

Question

Med Future 2022-3-10

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1668529-how-to-repeat-elements-of-array-in-matlab

编辑： Med Future 2022-3-10

采纳的回答： Jan

datasetvalue.mat

在 MATLAB Online 中打开

hello everyone i hope you are doing well

The data in the file is 250x1000, i have implemeneted the following code to delete 5% samples randomly from each row and replace zero at the end to complete the shape 1000 samples

Instead of zero, i want to repeat the array of each row from start complete the shape of 1000.

for example

in row 150 i have a data like data

[200 400 800 1000 800 200 400 ......]

When the below code run it remove 50 samples (950 samples remaining) and add 50 zeros (after 950) at the end of the row.

But i want to repeat the the row from start like [200 400 800 ....] will be added at the end of the row depend on the samples removes

How can i do it ?

dataset=load('datasetvalue').dataset;
[M,N] = size(dataset) ; 
percentageMP=5;
size_MP=round(percentageMP/100*N);
Discards=nan(M,size_MP);
for i=1:M
 
    row=dataset(i,:);
    
    discard=randperm(N,size_MP);
    
    row(discard)=[];
    row(:,end+1:N)=0;
    
    dataset(i,:)=row;
    
    Discards(i,:)=discard;
    
end
Discards=sort(Discards,2);