Read the underneath case study and analyze it to answer the sub-questions b.

One of the more visually compelling spots to find a tough old rock, however, is in Morningside Heights on 114th Street, between Broadway and Riverside Drive (map), New York City. Here you'll find a giant boulderaround 30-feet high and 100-feet longthat sits almost flush against two apartment buildings. Some locals have called it "Rat Rock," which is also the nickname given to the giant piece of schist in Central Parkapparently rats like to congregate on and nest in these boulders.

b) While merging data of varied coordinate reference systems, coming from dissimilar sources, there is the need to convert one coordinate systems to another. What is the mathematical basis and justification for this process?