selection of equal distances points from a set of points ?

assume a list of points or nodes. each one of them has x and y coordinates . the distance between two points i and j equal D(i,j)= sqrt((xi-xj)^2+(yi-yj)^2).

now, i want to select a set of these nodes which have equal distances between them (the inter-distance is specified previously --> d). hence the selected points are uniformly distributed

Answer 1

[KSSV]

Try to doc knnsearch.....knnsearch gives you nearest neighbors of the given set of points lying at a specified distance given as input.

[Abdelwahab Fawzy]

more explain please, is this function ?

[KSSV]

yes.....it is a function.....

[Abdelwahab Fawzy]

thanx for help, it is used for selection of the nearest neighbor nodes from a given location.

but i still need to select a number of nodes which are separated by an equal distance from each other (d) for example points (A B C D) where, AB~=AC~=AD~=BC~=BD~=CD =d

Answer 2

[Andrei Bobrov]

[ii,jj] = find(triu(D == d));