Count values in the given array

2023 10 21
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更新时间：2023 10 21
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Hi,
In the attached array, column 1 got two values -3.14 and -3.84 and on column 2 some values are 0 and some are 1. I need to check how many zeros and 1 are in -3.14 and -3.84.

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Star Strider
Star Strider 2023-10-21
编辑：Star Strider 2023-10-21
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Ran in:
Try this —
LD = load('matlab.mat');
AA4 = LD.AA4
AA4 = 716×2
-3.4100 0 -3.4100 0 -3.4100 0 -3.4100 0 -3.4100 1.0000 -3.4100 0 -3.4100 0 -3.4100 0 -3.4100 1.0000 -3.4100 0
[UAA4,ix1,ix2] = unique(AA4(:,1));
Zeros = accumarray(ix2, (1:numel(ix2))', [], @(x)nnz(AA4(x,2) == 0));
Ones = accumarray(ix2, (1:numel(ix2))', [], @(x)nnz(AA4(x,2) == 1));
NrZeros = table(UAA4, Zeros, Ones)
NrZeros = 2×3 table
UAA4 Zeros Ones _____ _____ ____ -3.84 303 71 -3.41 232 110
See the documentation on unique and accumarray for details.
.

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