I would like to calculate euclidian distance and put it in a list. I recive range error, what I'm missing?

user_13765728 0
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I would like to evaluate the euclidian distance from a fixed point to several points, I want to do it through a loop. Why is not working? I also tried without the '-1' for the range but still not working

from scipy.spatial import distance
vettore = np.array(np.mat('1 2; 3 4;6,7;8,9;10,12'))
posizione= np.array(np.mat('2,2'))


codio= []
for i in range(0,len(vettore)-1):
    codio[i]=distance.euclidean(vettore[i],posizione)
    
codio


>>> IndexError: list assignment index out of range
numpy python loops
2 Answers

How about distance_matrix:

from scipy.spatial import distance_matrix

distance_matrix(vettore, posizione).ravel()

Output:

array([ 1.        ,  2.23606798,  6.40312424,  9.21954446, 12.80624847])
user_42384080

Use append to add item into list

codio= []
for i in range(0,len(vettore)-1):
    codio.append(distance.euclidean(vettore[i], posizione))

However a better approach is to use distance_metrics as @Quang's answer.

user_60756990
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