how to find specific value in a table?

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Fabyola
Fabyola 2021-6-11
评论： piston_pim_offset 2023-12-4
if i have hsl table like this, so how to find row that have value = 3 in column 1 (which is 'clusternya')?
i've tried to use
ind1= strfind(hsl.clusternya,'3')
but the error said like this:
Error using strfind
Cell must be a cell array of character vectors.

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采纳的回答

KSSV
KSSV 2021-6-11
编辑：KSSV 2021-6-11
idx = hsl.clusternya==3 ; % logical indexing
T(idx,:)
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Fabyola
Fabyola 2021-6-11
aah i see, okaay i'll try them. thanks for your advice, all.

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更多回答（1 个）

Walter Roberson
Walter Roberson 2021-6-11
ind1 = find(hsl.clusterya == 3)
But you should probably be considering, for example
mask1 = hsl.clusterya == 3;
dist = sqrt(hsl.v1(mask1).^2 + hsl.v2(mask1).^2)
because using logical masks is generally faster than using find()

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