select.spatial

0th

Percentile

select points spatially

select a number of points by digitizing the area they fall in

Keywords
models
Usage
select.spatial(data, digitize = TRUE, pch = "+", rownames = FALSE)
Arguments
data
data object of class, or extending SpatialPoints; this object knows about its x and y coordinate
digitize
logical; if TRUE, points in a digitized polygon are selected; if FALSE, points identified by mouse clicks are selected
pch
plotting character used for points
rownames
logical; if FALSE, row (coordinate) numbers are returned; if TRUE and data contains a data.frame part, row.names for selected points in the data.frame are returned.
Value

  • if rownames == FALSE, array with either indexes (row numbers) of points inside the digitized polygon; if rownames == TRUE, character array with corresponding row names in the data.frame part

See Also

point.in.polygon, locator, SpatialPoints-class, SpatialPointsDataFrame-class

Aliases
  • select.spatial
Examples
data(meuse)
## the following command requires user interaction: left mouse
## selects points, right mouse ends digitizing
data(meuse)
coordinates(meuse) = c("x", "y")
# select.spatial(meuse)
Documentation reproduced from package sp, version 1.0-17, License: GPL (>= 2)

Community examples

Looks like there are no examples yet.