finding inverse of 3D matrix for speed

1 次查看（过去 30 天）
RS
RS 2015-7-1
编辑： Walter Roberson 2015-7-2
Hi ..
In a 1D simulation, I have 'n' number of grid points and at each point, some data is stored in 3x3 matrix (A). For simplicity, lets say
tic;
n= 200000;
A = rand(3,3,n);
for i = 1:n
iA(:,:,i) = inv(A(:,:,i));
end
toc; Elapsed time is 0.536919 seconds.
With this the code is too slow because of the for loop. If there is any other efficient way anyone knows, pl suggest. The usual way of using "iA = inv(A)" fails as the matrix need to be 2D for using that command.
Thanks.

请先登录，再回答此问题。

回答（1 个）

James Tursa
James Tursa 2015-7-1
编辑：James Tursa 2015-7-1

类别

在 Help Center 和 File Exchange 中查找有关 Mathematics 的更多信息

标签

Community Treasure Hunt

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

Start Hunting!

Translated by