Point Object
Usage
point(data.frame, x='x', y='y')
Arguments
data.frame
|
a data frame containing the x and y coordinates for each point and the variables observed at each point
|
x
|
the name of the column in data.frame that contains the x coordinate
|
y
|
the name of the column in data.frame that contains the y coordinate
|
Description
Create an object of class point from a data frame.
An object of class point represents the observed data of a spatial process. This includes the spatial location of sampling sites and
the values observed at those sites. A point object is stored as a data frame. The data frame must contain one column for the X
coordinate and one column for the Y coordinate of each point, as well as any number of columns representing data observed at the
points.
Value
A point object:
x
|
vector of x coordinates
|
y
|
vector of ycoordinates
|
var1
|
vector of the first variable
|
...
|
...
|
varm
|
vector of the mth variable
|
References
http://www.gis.iastate.edu/SGeoStat/homepage.htmlSee Also
point
Examples
data(maas)
maas.pts <- point(maas)