Calculate the distance between a point and all the others
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Marwen Tarhouni
el 30 de Nov. de 2016
Hi, I try to calculate the distance between a point and all the others. for exemple A(-20,90) B(-24,50) C(-23,90) D(-13,50) E(50,16)
I want to calculate the distance between (A and B) & (A and C) &(A and D) & (A and E)
also (B and A) & (B and C) &(B and D) & (B and E)
do you have an idea ?
x1= -20;
y1=90;
x2=-24;
y2=50;
x3=-23;
y3=90;
x4=-13;
y4=59;
x5= 50;
y6=16;
i=5;
% for while
while i<=4
i=i-1;
distance = sqrt((xi-x1)^2+(yi-y1)^2); ------------------> error distance???
end
Thanks
1 comentario
Guillaume
el 30 de Nov. de 2016
Editada: Guillaume
el 30 de Nov. de 2016
Where have you seen that matlab would magically understand that the i in the variable name xi is supposed to be substituted by the actual value of the variable i in order to make a new variable name?
There is no point in telling you how to calculate the distance if you don't even know how to index in matlab. Please, go through the getting started tutorial.
Respuesta aceptada
Guillaume
el 30 de Nov. de 2016
See comment to question. You need to learn matlab first.
In R2016b, this is very straightforward:
points = [-20, 90;
-24, 50;
-23, 90;
-13, 50;
50, 16];
distance = hypot(points(:, 1) - points(1, 1), points(:, 2) - points(1, 2)) %distances to 1st point
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