How to sort the matrix according to specific row?

I have a population generated by pop=[pop;x;y;z;cst,fr]; where first 4 rows are x, second 3 rows are y and third 8 rows are z. cst is sum of column 1 and fr is calculated failure rate of column 2.

            6        0.876
            5         0.99
            3        0.939
            6        0.876
            4        0.837
            7        0.959
            4        0.953
            4        0.873
            0            0
            5         0.95
            3        0.855
            4        0.873
            4        0.873
            5         0.95
            6        0.951
           66   0.00032352            
            6        0.876
            6        0.876
            6        0.965
            6        0.965
            4        0.953
            4        0.837
            4        0.953
            0            0
            3        0.855
            6        0.951
            5         0.95
            0            0
            0            0
            3        0.855
            6        0.951
           59   0.00038143
            6        0.965
            5        0.888
            6        0.965
            3        0.863
            7        0.889
            7        0.959
            4        0.953
            7        0.915
            6        0.968
            3        0.855
            3        0.855
            8        0.942
            4        0.873
            3        0.855
            8        0.942
           80    0.0002327

How can I sort the specific (16,32,48) rows followed by unchanged (1:15,17:31,33:47)? for example:

            6        0.876
            6        0.876
            6        0.965
            6        0.965
            4        0.953
            4        0.837
            4        0.953
            0            0
            3        0.855
            6        0.951
            5         0.95
            0            0
            0            0
            3        0.855
            6        0.951
           59   0.00038143
            6        0.876
            5         0.99
            3        0.939
            6        0.876
            4        0.837
            7        0.959
            4        0.953
            4        0.873
            0            0
            5         0.95
            3        0.855
            4        0.873
            4        0.873
            5         0.95
            6        0.951
           66   0.00032352
            6        0.965
            5        0.888
            6        0.965
            3        0.863
            7        0.889
            7        0.959
            4        0.953
            7        0.915
            6        0.968
            3        0.855
            3        0.855
            8        0.942
            4        0.873
            3        0.855
            8        0.942
           80    0.0002327

Please help!

Answer 1

[sixwwwwww]

you can do it as follow:

For example you have your data in variable A then use following line to do it:

A(16:16:end, :) = sortrows(A(16:16:end, :), 1);

I hope it helps. Good luck!

[Ash K]

It brilliantly worked, Thank you!

[sixwwwwww]

you are welcome

[Ash K]

sorry, it did sort all the cst (16:16:end) rows but the x,y,z values did not follow it's cst and fr. for example I wanted to sort like this:

from:

 a
 b
 c
 2abc
 d
 e
 f
 1def
 g
 h
 i
 3ghi

to:

 d
 e
 f
 1def
 a
 b
 c
 2abc
 g
 h
 i
 3ghi

I hope I explained correctly. Thank you.

[sixwwwwww]

you can do it as follow:

div = numel(A) / 32;
A = (reshape(reshape((sortrows((reshape((reshape(A', 1, []))', [], div))', 31))', 1, []), 2, []))';

[Ash K]

worked! Thank you sixwwwwwww!

[sixwwwwww]

you are welcome