extracting 20% of the data from a table

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Salma fathi
Salma fathi . 2022년 6월 14일
댓글: Salma fathi . 2022년 6월 15일
i have the following data table that represents the curve that is is shown in the plot, at row number 9 in this table we have the peak point, th max point for the variable NE8, we would like to split our table in a way such that we extract 20% of the data points we have above the peak and 20% of the data below the peak and the peak point from that table? is there an easy way that would allow us to do that ?
thanks in advance

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KSSV 2022년 6월 14일
T = readtable('https://in.mathworks.com/matlabcentral/answers/uploaded_files/1031740/testProfile.txt') ;
x = T.NE ;
y = T.GDALT ;
peak_y = T.GDALT(9) ;
peak_x = T.NE(9) ;
% idx = y <= peak_y ;
idx = x <= peak_x ;
legend('Curve','below peak','above peak')
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Salma fathi
Salma fathi 2022년 6월 15일
Thank you, this was helpful.

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