problem using medfilt2
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Harald von der Osten
on 10 Feb 2020
Commented: Harald von der Osten
on 10 Feb 2020
Attached you can find the data. Please rename .csv to .dat, and just use:
load cond2a.dat
Ax=cond2a(:,1);
Ay=cond2a(:,2);
Az=cond2a(:,3);
Znew=medfilt2(Az);
The file contains xyz with z values around 169. But using medfilt2 at the four corners the data is 0. How can I prevend this?
Thanks a lot,
Harry
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Accepted Answer
Subhadeep Koley
on 10 Feb 2020
Your Az vector is mainly concentrated around 169, therefore normal median filtering destroys the sudden peaks. Using Padding option as 'symmetric' might help. Refer the code below.
load cond2a.dat
Ax = cond2a(:, 1);
Ay = cond2a(:, 2);
Az = cond2a(:, 3);
Znew = medfilt2(Az, 'symmetric');
figure; plot(Az);
hold on;
plot(Znew);
legend({'Original Data', 'Median filtered data'});
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