Index a v dimensional matrix from a matrix with v columns and n rows
2 visualizaciones (últimos 30 días)
Mostrar comentarios más antiguos
Hello all,
I a have u row and n column matrix, say p, in which I want to store some data. I also have a matrix ind which has per each row the indices that I need in order to write to.
For example let me se the dimension to n=2 and supposing I want to write to position ind(1,:) of P I have:
ind = [1,2;2,6];
p(sub2ind([size(p,1),size(p,2)],ind(1,1),ind(1,1))) = datum; % Ican easly loop to handle more data
While this works I am not clear how to address the possibililty of having a 50 column (i.e. n=50) ind matrix as the prototype of subs2ind requires me to specify the indexes on by one.
Does anyone know how to deal with such scenario?
0 comentarios
Respuestas (1)
madhan ravi
el 30 de Sept. de 2020
p(sub2ind(size(p), ind(:, 1), ind(:, 2)) = Dayum % where RHS should be equal to size(ind)
4 comentarios
madhan ravi
el 30 de Sept. de 2020
Editada: madhan ravi
el 30 de Sept. de 2020
for k = 1 : size(ind, 1)
I = num2cell(ind(k, :))
p(sub2ind(size(p), I{ : }))= datum;
end
Ver también
Categorías
Más información sobre Resizing and Reshaping Matrices en Help Center y File Exchange.
Productos
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!