Identidying next "n" elements of an array

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James 2014-5-13

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https://ww2.mathworks.cn/matlabcentral/answers/129506-identidying-next-n-elements-of-an-array

评论： José-Luis 2014-5-13

I am working on a coastline evolution model. What I would like to do is identify the element(s) in my water depth array that satisfy a certain condition. For instance find(h<.90 & h>0.89). I would then like to identify the next "n" values in my "y" (coastline height) array that have values greater than the located element(s)and set all of their values equal to the y value of the array elements where the find(h<.90 & h>0.89) condition was met. Hopefully this makes sense. I'll try and sum it up...

I HAVE:

ymax = 20 ymin = 200 y = ymin:0.02:ymax x = (y+20)/0.02

Sealevel = (very long array)

h = y-Sealevel

I WANT:

Inds = find(h<.90 & h>0.89)

%then take that element(s) location and find it in my y array, take the next "n" elements in the y array and make their value the same value of the y value of "Inds" element

I am not sure how to deal with Inds returning multiple elements. Ideally I would just like it to find the first elements that satisfies the condition.