Definition of fiter in data by text in colomn
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hello,
I would like to ask you for advice on the filter. I need to define a basic filter.
Filter all rows labeled "P1" in column 4.
data file contain more than mil rows with P1-P20 values
I tried
Data_P1=Data(Data(:,4)=="P1",:)
but it's bad
thank you
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1108560/image.png)
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