index multiple columns together on different critera
8 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
Jacob Matson
am 13 Aug. 2020
Bearbeitet: madhan ravi
am 13 Aug. 2020
I have a maxtrix of 2 columns, I want to pull out a new matrix with all the rows where column 1 is <0.2 and column 2 is >0.2. The row values are matched, both columns need to stay together.
A= [0.09 0.48
0.5 0.1
0.04 0.3]
I want make the new matrix to return
B= [0.09 0.48
0.04 0.3]
I've tried things like these, but I only end up with the first column
idx=A(:,1)<0.2 | A(:,2)>0.2;
B=A(idx)
B=[0.09
.04]
How do I return column 2 as well?
0 Kommentare
Akzeptierte Antwort
Weitere Antworten (2)
hosein Javan
am 13 Aug. 2020
A= [0.09 0.48
0.5 0.1
0.04 0.3];
idx1 = A(:,1)<0.2 ; idx2 = A(:,2)>0.2;
B(:,1) = A(idx1,1); B(:,2) = A(idx2,2);
% answer in command window
B =
0.0900 0.4800
0.0400 0.3000
0 Kommentare
madhan ravi
am 13 Aug. 2020
Bearbeitet: madhan ravi
am 13 Aug. 2020
“I want to pull out a new matrix with all the rows where column 1 is <0.2 and column 2 is >0.2.”
idx = A(:,1)<0.2 & A(:,2)>0.2;
A(idx, :)
0 Kommentare
Siehe auch
Kategorien
Mehr zu Matrix Indexing finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!