如何在 pandas 中交叉表距离

Question

Here's my Input

City    Logitude    Latitude
A              2           2
B              5           6
C              8           10

Here's my Output, calculation using Pythagoras formula

      A      B     C
A     0      5    10
B     5      0     5
C     10     5     0

I'm only using Euclidian distance, write formula directly in formula still fine

Answer 1

Create a matrix of longitude and latitude only, then you can use eucalidean_distance function from the scikit-learn library. You can later convert the result to data frame, add indices, etc.

from sklearn.metrics.pairwise import euclidean_distances

X = data.set_index("City")
euclidean_distances(X)

array([[ 0.,  5., 10.],
       [ 5.,  0.,  5.],
       [10.,  5.,  0.]])