Greetings,
I apologize in advance for what must be a rather naive question, but I
am new to the field of spatial statistics. In the course of learning
and testing various estimation methods with test data sets, I have a
couple of questions regarding conventions regarding lat-long
coordinates. In particular, I have been using a small test data set
provided by Anselin on crime data in Columbus OH. Each sample point
includes a lat-long coordinate. The data set can be found at
http://www.spatial-econometrics.com/data/
As an example, the first point in this data set shows latitude=35.62,
longitude=42.38. Yet when I check the coordinates of a random point in
Columbus OH (not in the dataset), I find coordinates in the range of
Lat=40.x, Long= -82.y. I use the points in the Anselin data set to
calculate a spatial distance matrix using Delaunay Triangulization. I
wanted to be sure that I understand what the conventions are when
encoding lat-long coordinates. In the end, I need to understand this so
I can calculate the distance between two points based on their lat-long
coordinates.
Thanks,
Mark
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