how to find mininum distance between two points in a linear triangular element (3 nodes)?

Dear All,

may I ask, how can we determine the minimum distance between two points in each triangular element (3 nodes) in a very efficient way in Matlab?

P.S. Input file includes a lot of triangular elements...

Best regards,

Jacob

[darova]

Find 3 destances and use min function. Simple

[asasdasdasdadsadasd]

@darova, if 100000 elements are used, it takes too long using such loop....

[darova]

Check 50 000 (half) then

[Image Analyst]

You asked

how to find mininum distance between two points in a linear triangular element (3 nodes)?

may I ask, how can we determine the minimum distance between two points in each triangular element (3 nodes) in a very efficient way in Matlab?

P.S. Input file includes a lot of triangular elements...

Best regards,

Jacob

=====================================================

So, how long is too long? I just did 100,000 iterations and it took 61 milliseconds:

tic
numPoints = 100000;
r1 = rand(numPoints, 2);
r2 = rand(numPoints, 2);
for k = 1 : numPoints
	d(k) = sqrt((r1(k, 1) - r2(k, 1))^2 + (r1(k, 2) - r2(k, 2))^2);
end
toc

Elapsed time is 0.061533 seconds.

What form are your points in? Double arrays of 100000-by-2?

[asasdasdasdadsadasd]

@Image Analyst

thanks for your reply! I thinkt I have to reformulat my question, the task is not that simple, i.e.

100000 elements (3 nodes) are in used, each element contains 3 nodes, now we should calculate the minimum in each element

so:

for k = 1 : 100000

% loop over each element

for j = 1 : 3

% loop over each line in an element

...

end

% export

dist(k) = min (length(j,1),length(j,2),length(j,3))

end

so long is too long ... therefore I am looking for a very efficient way in Matlab......