Azzera filtri
Azzera filtri

delete and handling matrix

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Giuseppe Antonacci
Giuseppe Antonacci il 18 Feb 2019
Commentato: Adam Danz il 18 Feb 2019
hi,
I have matrix in the insert.I would like:
1) a cycle if/for that if MAtrix(:,8)<3 and matrix(:,6) different zero, delete this line in the matrix.
2)a cycle for/if that IF matrix (:,8)<3 in this lines matrix(:,6) must be 0.
thanks bye

Risposta accettata

Adam Danz
Adam Danz il 18 Feb 2019
To identify rows of a matrix where column 8 is less than 3 and column 6 is not zero,
rowIdx = (matrix(:,8) < 3) & (matrix(:,6) ~= 0);
where 'rowIdx' is a vector of row numbers that satisfy those conditional statements.
To remove those rows from the matrix,
matrix(rowIdx, :) = [];
To identify rows of at matrix where column 8 is less than 3 and column 6 is equal to zero,
rowIdx2 = (matrix(:,8) < 3) & (matrix(:,6) == 0);
  2 Commenti
Giuseppe Antonacci
Giuseppe Antonacci il 18 Feb 2019
thanks, one other thing:
a cycle for example
if matrix(:,8)<3
matrix(:,6)=0
end
but this doesn't works.
Adam Danz
Adam Danz il 18 Feb 2019
I'm not sure what you mean by 'a cycle'.
Please look at my 3rd line of code to see how I constructed that line. You must use two equal signs.

Accedi per commentare.

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