I want to export 5 columns from a huge text file with 16 columns and save it as a text file again

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Parisa Afkari
Parisa Afkari 2022-6-21
回答： Yatharth 2022-6-27
I want to export 5 columns from a text huge text file with 16 columns and save it as a text file again. Can someone help me what function can I use for that. I will appreciate any help in this regards.
  1 个评论
Yatharth
Yatharth 2022-6-22
编辑：Yatharth 2022-6-22
Hey , since you are reffering to columns I assume you have .csv instead of a .txt file , you can simply read the file and store it in a table and extract your desired columns either by column name (y) or by indexing (x) and later save it again as csv via writetable function
trainDataFileName = 'training.csv';
trainData = readtable(trainDataFileName);
y = trainData( : , ["Arch" "CTB" "Direct" "EntireTestName"])
x = trainData(: , 1:5)
writetable(x,'filename.csv')
you can reffer to readtable and writetable from the MATLAB Documentation

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Yatharth
Yatharth 2022-6-27
Hey , since you are reffering to columns I assume you have .csv instead of a .txt file , you can simply read the file and store it in a table and extract your desired columns either by column name (y) or by indexing (x) and later save it again as csv via writetable function
trainDataFileName = 'training.csv';
trainData = readtable(trainDataFileName);
y = trainData( : , ["Arch" "CTB" "Direct" "EntireTestName"])
x = trainData(: , 1:5)
writetable(x,'filename.csv')
you can reffer to readtable and writetable from the MATLAB Documentation

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