Is possible select specific rows with all column in a loop?

Hello.

I have a data matrix like the following

1                     -5.01E-01         0.00E + 00
1.0865             1.09E-01         0.00E + 00
1.173               1.09E-01           0.00E + 00
1.2911              1.09E-01         0.00E + 00
1.4329             1.09E-01         0.00E + 00
1.6219             1.09E-01         0.00E + 00
1.811               1.09E-01         0.00E + 00
2                     1.09E-01         0.00E + 00
2.3333            1.38E-01         0.00E + 00
2.6667             1.38E-01         0.00E + 00
3                      1.38E-01         0.00E + 00
3.001               -2.15E-02         0.00E + 00
3.0023             -2.15E-02         0.00E + 00
3.004                -2.15E-02         0.00E + 00
3.0062             -2.15E-02         0.00E + 00
3.009                -2.15E-02         0.00E + 00
3.0128             -2.15E-02         0.00E + 00
3.0176             -2.15E-02         0.00E + 00
3.0239             -2.15E-02         0.00E + 00
3.032                 -2.15E-02         0.00E + 00
3.0426              -2.15E-02         0.00E + 00
3.0564             -2.15E-02         0.00E + 00
3.0743             -2.15E-02         0.00E + 00
3.0976             -2.15E-02         0.00E + 00
3.1279             -2.15E-02         0.00E + 00
3.1673             -2.15E-02         0.00E + 00
3.2185             -2.15E-02         0.00E + 00
3,285                -2.15E-02         0.00E + 00
3.3744              -2.15E-02         0.00E + 00
3.4787              -2.15E-02         0.00E + 00
3.609                 -2.15E-02         0.00E + 00
3.8045              -2.15E-02         0.00E + 00
4                       -2.15E-02         0.00E + 00
4.25                 1.55E-02             0.00E + 00
4.625                1.55E-02         0.00E + 00
5                       1.55E-02         0.00E + 00
5.5                     5.26E-02         0.00E + 00
6                       5.26E-02         0.00E + 00

for this example how to get the integer values of column one (1, 2, 3, 4, 5 and 6) with all its columns.

Could it be done automatically? since I have a big matrix

I will really appreciate your valuable help.

Orlando

Answer 1

[Walter Roberson]

mask = ismembertol(YourArray, 1:6);
selected_rows = YourArray(mask,:);
G = round(selected_rows(:,1));
split_groups = splitapply(@(M){M}, selected_rows, G)