MATLAB: Count the number of times a value appears in a row and save the row number

Question

I wanted to sort points in an array based on how many times a number less than or equal to 1.5 appears in the row. I want to save the row index number of those that have 3 or more occurences less than or equal to the target value of 1.5. I have placed the array below. If you have any ideas on how to do this that would be great. Thanks for your time.

A = [NaN	1.00000000000000	1.00000000000000	1.99994495218295	1.40991828545270	1.98465118243128	2.97995391814023	1.41286932041226	1.44150019470391	2.30703739193881
1.00000000000000	NaN	1.41618367600370	0.999999999999996	1.00000000000000	2.11349467948903	1.98589244648483	1.00000000000000	1.73544845449717	1.98611502337309
1.00000000000000	1.41618367600370	NaN	2.24512987514306	2.20570040562793	0.999999999999996	3.22884118121504	1.75480404405606	1	3.15259384660772
1.99994495218295	0.999999999999996	2.24512987514306	NaN	1.40867173007472	2.65578172203034	1.00000000000000	1.41514975278174	2.44463958996392	2.12446752335984
1.40991828545270	1.00000000000000	2.20570040562793	1.40867173007472	NaN	3.01897607767301	2.11695260794737	1.62219494319153	2.57847672580517	1.00000000000000
1.98465118243128	2.11349467948903	0.999999999999996	2.65578172203034	3.01897607767301	NaN	3.52998354037453	2.38833466800397	1.41223022448087	3.96751962825988
2.97995391814023	1.98589244648483	3.22884118121504	1.00000000000000	2.11695260794737	3.52998354037453	NaN	2.21498386821498	3.35954605769311	2.49207458085697
1.41286932041226	1.00000000000000	1.75480404405606	1.41514975278174	1.62219494319153	2.38833466800397	2.21498386821498	NaN	1.44673037867744	2.53341581840774
1.44150019470391	1.73544845449717	1	2.44463958996392	2.57847672580517	1.41223022448087	3.35954605769311	1.44673037867744	NaN	3.56150161869124
2.30703739193881	1.98611502337309	3.15259384660772	2.12446752335984	1.00000000000000	3.96751962825988	2.49207458085697	2.53341581840774	3.56150161869124	NaN];

Answer 1

Try this:

rowsum = sum((A <= 1.5), 2);
result = find(rowsum >= 3)

producing:

result =
     1
     2
     3
     4
     5
     8
     9

Those could be combined into one line:

result = find(sum((A <= 1.5), 2) >= 3)

I kept them separate for clarity.