data space

I am learning the subclust function now, but can not understand what does data space mean. for exmaple, the help said:" if the data dimension is two (X has two columns), radii=0.5 specifies that the range of influence in the data dimension is half the width of the data space."

what is data space of the below data X which has two column x and y:

607803.792227518  4821267.48343619
608550.373931060  4820577.75184122
607932.431214948  4821148.12824509

Answer 1

[Andrew Newell]

The data space is a box determined by the upper and lower bounds in each dimension. In your example, it is defined by

607803.792227518 <= X(1) <= 608550.373931060
4820577.75184122 <= X(2) <= 4821267.48343619

If you have a scalar for radii, the range of influence is half the width of the box in each direction.