xyTable
Tabulate repeated x-y points
Description
Given two dimensional points, returns the unique points and their counts.
Usage
xyTable(x, y = NULL, digits)
Arguments
| x |
a numeric vector specifiying the x coordinates of the input points or,
if y is omitted, any of the formats accepted by xy.coords:
- a numeric vector.
- a 2-column matrix.
- a complex vector.
- a list with components x and y.
- a ts object.
|
| y |
a numeric vector specifying the y coordinates of the input points.
If it is omitted, it is derived from x by calling xy.coords(x).
|
| digits |
if given (and not NULL), the x and y coordinates are
replaced by signif(x, digits) and signif(y, digits) so close
points are considered the same.
|
Value
returns a list giving the unique points and the number of times each is repeated.
| x | the x coordinates of the unique points in the input. |
| y | the y coordinates of the unique points in the input. |
| number | the number of times each [x,y] pair is repeated. |
See Also
Examples
xyTable(c(5,5,6,6,6,6), c(12,12,13,14,14,14))