Load a dataset in matlab for knn classification

Question

Mary Gh 2020-12-31

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/705983-load-a-dataset-in-matlab-for-knn-classification

回答： Walter Roberson 2020-12-31

toy.m

Hello guys actually i want to load this dataset in matlab for executing knn classification on it but i dont know how to do so .i have tried load and readtable and ... but it didnt work then i have tried this code

```

FID=fopen('file','rt'); a=textscan(FID,''...);

```

But actually i could not find out what is text format to take data that i wanted so it was a dead end does any one can help me with this.please

This is how inside of my data file looks like []

this is the dataset file http://lms.ui.ac.ir/public/group/a7/b2/06/6a5fb_24fb.gz

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Answer 1

Walter Roberson 2020-12-31

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/705983-load-a-dataset-in-matlab-for-knn-classification#answer_588188

在 MATLAB Online 中打开

filename = 'Atrain';
fid = fopen(filename, 'r');
all_data = {};
blocks = 0;
while true
    for K = 1 : 4; L = fgetl(fid); if ~ischar(L); break; end; end
    if feof(fid); break; end
    nrow = sscanf(L, '# rows: %d');
    blocks = blocks + 1;
    all_data{blocks} = cell2mat(textscan(fid, '', nrow, 'headerlines', 1));
end
fclose(fid);
fprintf('File contained %d blocks of data\n', blocks);