Do these coordinates exist in any other GPS dataset?

I have five different datasets of GPS data which contain, Time in row one, Lattitude in row two, and Longitude in row three. I am trying to write some code to find out if one row of data matches another in a different dataset (All datasets are imported into matlab from a CSV file) i.e.

Dataset One 19:50:48, 50.374664, -4.135609, 19:51:49, 50.374999, -4.139999

Dataset Two: 19:50:48, 50.389882, -4.135609, 19:51:49, 50.374999, -4.139999

Running the code would tell me that dataset one and dataset two have a row in common.

Thanks, Lee

Answer 1

[Walter Roberson]

I notice that the coordinates are not exactly the same between the databases: the first coordinate value differs by 0.015. This suggests that you want the comparison to be within a tolerance. Are the tolerances for X, Y, and Z all to be the same? Should the tolerance be per-coordinate, or should it be determined by whether the coordinates are within a particular spherical radius of each other? Or are you looking for the closest match?