I have a csv file, which contains some 0 and some non-zero values. How to get the index of the non-zero values in the csv file?

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Kiruthiga Sekar
Kiruthiga Sekar il 16 Apr 2019
Commentato: the cyclist il 16 Apr 2019
Please find the attached file. How to get the index of a non-zero value in the csv file, like i need to get [4 7] in an array, as it has the non-zero values. TIA

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the cyclist
the cyclist il 16 Apr 2019
data = csvread('Book4.csv');
idx = find(data);
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