MATLAB: Extracting a particular data from the original data

dataextractinterpolation

I have a data file named rd.txt attached below. 1st column data refers to time and all other columns refers the corresponding distance. Now I want to extract the data for 0.02,0.04,0.06,…60.00 sec (at a difference of 0.02) from 1st column and corresponding distances. Is there a way to extract data from the original data for a particular values? Your answer is highly appreciated. Thank you.

Best Answer

You may not be reading your data correctly.
This works for me without error:
fidi = fopen('sam moor rd.txt','rt');
Dcell = textscan(fidi, repmat('%f',1,9), 'CollectOutput',1, 'Delimiter',' ');
D = cell2mat(Dcell);
L = size(D,1);
t = D(:,1);
q = length(t > 0)/L;
ti = 0 : 0.02 : max(t);                                 % Interpolation Vector
Di = interp1(t, D(:,2:end), ti, 'linear');              % Interpolated Data
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