How can I use FIND to extract the indices of 1 elements in a 0/1 matrix?
2 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
I only have some 0/1 matrices and they are generated randomly. How can I define X like this: (please see Matrix image)
The first index of X shows it's in the r-th(r=1) row, the second index shows it's the n-th 1 in that section in that row, and the third index shows it's in the s-th section of that row, and the value of X=K means that it’s the K-th element of that whole row (counting elements from the beginning of that row up to that 1). Here r=1:4 n=1:5 s=1:2
0 Kommentare
Akzeptierte Antwort
michael
am 3 Okt. 2016
[row,col] = find(X) returns the row and column subscripts of each nonzero element in array X
PS: matlab indexes are starting from 1, not from 0
3 Kommentare
michael
am 3 Okt. 2016
"X=K means that it’s the K-th element of that whole row" you already have K in the results.
for the r: you have it as output of find
for the s: if col > some number
for the n: sum(A(row,s:col))-1
Weitere Antworten (0)
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!