retrieve particular time data from .txt file

hello,

the text file time and votlage values from 0.5sec to 0.55sec

but i need extract 0.52sec to 0.54sec from this txt file

how to code this one?

z=readmatrix("t2.txt");
y=z(:,1);
x=z(:,2);

this is code i used to extract the column separately. I need values from particular time period?

please help me to get resolve the issue

Answer 1

[Image Analyst]

Did you try

% Read in data from text file with readmatrix()
data = readmatrix('t2.txt');
% Extract time into vector t, and the signal into vector y.
y = data(:, 1);
t = data(:, 2);
% Find out what indexes are between time1 and time2.
time1 = 0.52;
time2 = 0.54;
indexes = (t >= time1) & (t <= time2);
% Extract only those data into new vectors.
yExtracted = y(indexes);
tExtracted = t(indexes);

[Venkatkumar M]

if possible can you please help me to resolve this error as well?

how to plot 3d spectrogram from data in txt file - MATLAB Answers - MATLAB Central (mathworks.com)

[Image Analyst]

If you have trouble with the answers already provided there, then say so and show why.