selecitng lines of same intercept from two matrices

Hi

I have two matrices. Each of these matrices have straigh lines. For example in matrix A, i have 6 stragith lines. All of these lines havean y intercetp, and all have same slope. In matric B, i have another set og 6 lines. They also have same slope, and intercept times.

I like to compare lines between matrix A and matrix B, and only select that line which has same y intercept.

so for example, in matrix A, y intercept of 6 lines i s, 1,2,3,4,5,6 and in matrix B, y intercept is 1.5,2,2.5,4,5.5,6. so i like to select lines fromeither matrix A or B which have common intercept, that i s, line 2,4,and 6.

I have added images of two matrices. In both of these matrices, line1, 3 and 5th have same intercept.

I need to get these lines and save in a new matrix. These lines do not have the sampel element values

thanks

sal

[Rik]

I don't understand what your data is, but if you have these rows of numbers you can use ismember.

[salman abbasi]

@Rik the lines with same intercept doesnt have the same element values

[Rik]

Again, I don't understand your description, but if you have this:

A_data=[1,2,3,4,5,6];
B_data=[1.5,2,2.5,4,5.5,6];

Then you can use ismember to extract [2,4,6].

[salman abbasi]

@Rik . Thanks Ri. Please see images of two matrices. The elements values do not match. I need to take out line 1,3 and 5 automaticaly. So the way i see it to compare two matrices, which is part of the algorithm i am writing, and comapre them based on Y-intercept