how to exclude a row from a matrix

20 visualizzazioni (ultimi 30 giorni)
D.J
D.J il 3 Ott 2018
Commentato: D.J il 3 Ott 2018
Hi all, I need to extract all data from a matrix except for one row (the 3rd from last).
Say for example I have the matrix below and I want to exclude this row: [NAN,7,7] Any idea how to do that? Many thanks
T=[1,2,3;4,5,6;7,8,9;1,2,3;4,5,6;7,8,9; NAN,7,7;4,5,6;7,8,9]
  1 Commento
Bob Thompson
Bob Thompson il 3 Ott 2018
I would suggest using an isnan check. Not entirely sure how it will treat an entire row, but a place to start.
T=[1,2,3;4,5,6;7,8,9;1,2,3;4,5,6;7,8,9; NAN,7,7;4,5,6;7,8,9];
T = T(~isnan(T),:);
I suspect you will need:
T = T(~isnan(T(:,1)),:);

Accedi per commentare.

Risposta accettata

the cyclist
the cyclist il 3 Ott 2018
Assuming that what you want is to exclude any row with a NaN in any position, then either
T = T(all(~isnan(T),2),:);
or
T(any(isnan(T),2),:) = [];
will do the job.
  1 Commento
D.J
D.J il 3 Ott 2018
There was a problem with the first option, but the 2nd one worked perfectly well. Thank you very much.

Accedi per commentare.

Più risposte (0)

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by