Reference Panel Comparator
See what your calculators share. Compare coordinate values, inspect label differences and find references unique to each panel.
How matching works
Values are compared across all 25 numeric coordinates within the same scale. Equivalent numeric notation and negative zero compare equally. No rounding or conversion is applied.
Names match after trimming surrounding whitespace and ignoring case. Punctuation, accents and internal spaces remain significant. Shared labels and shared values are counted separately.
Nearby finds the nearest counterpart in panel B for each coordinate unique to panel A, within your chosen Euclidean distance. Exact matches are excluded. One reference in B can match several in A. This directional search shows up to 100 closest matches, with the first source entry breaking equal-distance ties.
Identical coordinates establish overlap in the supplied data. They do not establish sample provenance, independence, ancestry or biological relationships. Geographic coverage reflects available catalog metadata.
Start with two calculators
Compare up to four published panels with the same coordinate scale. A personal sample is not required.
Your comparison
0 / 4 panelsChoose a calculator from the list, then add it here.
Reference data loads when you choose Compare panels. Calculations run in this browser, and the page keeps the comparison only while it is open.
Reference overlap
Coordinate counts use distinct numeric rows. Repeated source rows remain visible as occurrence counts in the lists.
Reference lists
Choose a distance meaningful for this coordinate scale. There is no universal threshold for sample identity or ancestry. Searches above 4,000,000 coordinate comparisons are unavailable.