convert an array value into corresponding Matrix indices

23 Mar 2022
1 Risposta
Risposta accettata
Aggiornato 23 Mar 2022
6 Visualizzazioni (30 giorni)

0 voti

Given an array of values, I would like to place a "1" into the corresponding Matrix element
I'm currently doing...
matrix = zeros( numDatapoints,10 ); %Start with a zero matrix of correct size
for row = 1:numDatapoints
for i = 1:10
if dataArray(row,17) == i %compare the value of the array to the current index
matrix(row,i) = 1;
end
end
Any suggestions to improve this in MATLAB?

Accedi per rispondere a questa domanda.

 Risposta accettata

Stephen23
Stephen23 il 23 Mar 2022
Ran in:

0 voti

Ran in:
A = repmat((1:10).',3,1)
A = 30×1
1 2 3 4 5 6 7 8 9 10
M = (1:10)==A
M = 30×10 logical array
1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1

Più risposte (0)

Categorie

Scopri di più su Matrices and Arrays in Centro assistenza e File Exchange

Prodotti

Release

R2021b

Tag

Community Treasure Hunt

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

Start Hunting!

Translated by