how to find cityblock distance?

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hp
hp 2018-10-2
评论： Rik 2023-2-16
how to find the city block distance between feature vectors to query image feature vector, in matlab2013?

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回答（3 个）

Jan
Jan 2018-10-2
pdist and pdist2 can calculate the city block distance.
Fowzi barznji
Fowzi barznji 2020-3-16
x=[1 3 9 6 4 2 6 8 3 6];
y=[4 -2 6 8 8 3 7 2 1 1];
cityblockvalue = sum((abs(x - y)));
cityblockvalue= 32
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DGM
DGM 2023-1-10
Ran in:
b is not a vector. It depends what the relationship between a and b is.
Assuming that a is a row vector and applies in whole to each row of b in the same way, then the distance for each row is:
x = [1 2 3];
y = [4 5 6; % i made this 4x3 so that it's easy to see the orientation
7 8 9;
10 11 12;
13 14 15];
D = pdist2(x,y,'cityblock').'
D = 4×1
9 18 27 36
D = sum((abs(x - y)),2) % works R2016b+
D = 4×1
9 18 27 36

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Fowzi barznji
Fowzi barznji 2020-3-16
try these files
may be contain an interest to u
  2 个评论
rema
rema 2023-2-16
hi,how obtain on lable image for using in classification by using knn
Rik
Rik 2023-2-16
@rema You're asking a completely new question. Have a read here and here. It will greatly improve your chances of getting an answer.

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