parfor error with 3D matrix

1 Ansicht (letzte 30 Tage)
sunny kant
sunny kant am 30 Jan. 2022
Kommentiert: Matt J am 31 Jan. 2022
Hello everyone,
I am using the parfor loop for the 3D matrix. When I am executing my parfor loop and getting this error "Error: The variable TEST1 in a parfor cannot be classified. See Parallel for Loops in MATLAB, "Overview". I am replacing the zero value with nan in the loop. Any suggestion regarding this. Your help in this regard will be highly appreciated.
data = rand (20,10,10);
data1 = rand (20,10,10);
parfor ii=1:20
ii
for jj=1:10
jj
TEST1 (ii,jj,:) = data(ii,jj,:).*data1 (ii,jj,:);
TEST1 (TEST1==0) = nan;
end
end

Akzeptierte Antwort

Matt J
Matt J am 30 Jan. 2022
Move that line outside the loop.
parfor ii=1:20
ii
for jj=1:10
jj
TEST1 (ii,jj,:) = data(ii,jj,:).*data1 (ii,jj,:);
end
end
TEST1 (TEST1==0) = nan;

Weitere Antworten (1)

sunny kant
sunny kant am 31 Jan. 2022
Thanks you Matt for your suggestion on the code. However, I am applied the same thing, but when I am applying TES1 (TEST1==0) = nan inside the parfor loop in the code, it gives error. Can you suggest me that why it is happing.
  3 Kommentare
Matt J
Matt J am 31 Jan. 2022
Bearbeitet: Matt J am 31 Jan. 2022
Additionally
TEST1 (TEST1==0) = nan;
is an operation that Matlab already does in a fast, parallelized manner without explicit loops. You should reserve parfor only for things that cannot easily be replaced with vectorized expressions.
Matt J
Matt J am 31 Jan. 2022
sunny kant's comment moved here
Thanks Walter for explaining me why my code is not working. As you suggested, I appllied for my code, and now it is working. Thanks for your suggestion on my code and clearing my doubts.

Melden Sie sich an, um zu kommentieren.

Kategorien

Mehr zu Loops and Conditional Statements finden Sie in Help Center und File Exchange

Produkte

Community Treasure Hunt

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

Start Hunting!

Translated by