How do i check if elements from my rows of vector are within range of one another

I'm trying to write a code for collision detection of sphere's in my project. I have vector containing values for the edges of each sphere on just the x-axis. how do i check if any of the rows are within the range of one another? e.g:

There's a possible collision in row 4 and 5.

I'm really not sure how to go about this so any help would be apprietiated thanks.

[Jan]

Colliding sphere should be easy to detect using the positions of their centers and their radius.

What do yo call "being in the range of a vector"? What are "values for the edges on the x-axis"? What is the mathematical argument for assuming collisions in the rows 4 and 5? Write this down to have an important part of the solution.

By the way, posting the data as text would allow to use them by copy&paste for a solution. A screen shot is the worst method to post code or data in the forum.

[Torsten]

Hint:

For that M(i,:) and M(j,:) overlap, both max(M(i,:)) < min(M(j,:)) and max(M(j,:)) < min(M(i,:)) must be false.

Answer 1

[Jan]

With some bold guessing of what you want to achieve:

X = [ 0.2734,  0.1734; ...
     -0.1671, -0.2671; ...
      0.0753,  0.0247; ...
     -0.2240, -0.3240; ...
     -0.2640, -0.3640];
X = sort(X, 2);  % Care for order of coordinates
plot(X.', [1:5; 1:5])
ylim([0, 10])

X1 = X(:, 1);
X2 = X(:, 2);
overlap = (X1 > X1.' & X1 < X2.') | (X2 > X1.' & X2 < X2.')

overlap = 5×5 logical array
   0   0   0   0   0
   0   0   0   1   1
   0   0   0   0   0
   0   1   0   0   1
   0   1   0   1   0

Meaning: The 2nd row indicates, that the interval 2 overlaps with the intervals 4 and 5. The 5th row means, that the 5th interval overlaps with the intervals 2 and 4.