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<div class="moz-cite-prefix">Hello Phil,<br>
<br>
This should work:<br>
<br>
<font size="-1"><tt>--> [A,B] = ndgrid(rand(1,1000),
rand(1,10000)); // test's data</tt><tt><br>
</tt><tt>--> size(A)</tt><tt><br>
</tt><tt> ans =</tt><tt><br>
</tt><tt> 1000. 10000.</tt><tt><br>
</tt><tt>--> [v, i] = min(abs(A-B));</tt></font><br>
<br>
The minimal distances are in v, the index of the closest in B are
in i.<br>
<br>
Regards<br>
Samuel<br>
<br>
Le 15/02/2019 à 21:46, P M a écrit :<br>
</div>
<blockquote
cite="mid:CACf7ODv6SyWvu=2Qjdo0WGBMHJRQyyn4XnDe3btYu-uUMec-0A@mail.gmail.com"
type="cite">
<div dir="ltr">
<div>Hi experts,</div>
<div><br>
</div>
<div>my problem is (I guess) a very common thing, but I somehow
get stucked.</div>
<div><br>
</div>
<div>I aim to find the nearest position of ANY value in array_1
to ANY position in array_2.</div>
<div><br>
</div>
<div>e.g.:</div>
<div><br>
</div>
<div>A = array of doubles with 1000 elements.</div>
<div>B = array of doubles with 10'000 elements.</div>
<div><br>
</div>
<div>for each element of A I want to know it's nearest value in
B.</div>
<div>Also I want to know the index of the nearest value in B.<br>
</div>
<div><br>
</div>
<div>I could do it in a bunch of for-loops, but this is way to
slow, since this loops 1000 values against 10'000 values of B.<br>
</div>
<div><br>
</div>
<div>something like this:</div>
<div><br>
</div>
<div>nearesVal = zeros(1000);<br>
</div>
<div>distIndex = zeros(1000);<br>
</div>
<div><br>
</div>
<div>for i=1:1000</div>
<div> d = 1000000; // just a rediculous big number that is much
greater than max(A) & max(B)
</div>
<div> for j = 1:10000</div>
<div> act_dist = abs( A(i) - B(j) ); // actual minimal
distance <br>
</div>
<div> if act_dist <= d</div>
<div> d = act_dist;</div>
<div> nearestVal(i) = B(j);
</div>
<div> distIndex(i) = j;</div>
<div> end</div>
<div> end</div>
<div>end<br>
</div>
<div><br>
</div>
<div>I do not have Scilab at hand, while I am writing this, but
it looks like it should work :-)</div>
<div><br>
</div>
<div>Thanks</div>
<div>Phil<br>
</div>
<div><br>
</div>
<div><br>
</div>
<div><br>
</div>
<div><br>
</div>
<div><br>
</div>
<div><br>
</div>
<div><br>
</div>
<div><br>
</div>
</div>
<br>
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</blockquote>
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