inputData = t(matrix(c(3,2,3.5,12,4.7,4.1,5.2,
4.9,7.1,6.1,6.2,5.2,14,5.3),2,7,dimnames=list(c("r","d"))));
inputData = data.frame(inputData);
point1 = inputData[1,];
point2 = inputData[4,];
distance = euclidean_distance(point1, point2);
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