occurences: Create Occurrences

In kardinal-eros/sabotag-tools: Tools of the Salzburger Botanische Arbeitsgemeinschaft (SaBotAg)

Description

A simply constructor function for class "Occurrences".

Usage

occurrences(x, schema = c("taxon", "gridcell"))

## S4 method for signature 'Occurrences'
plot(x, type,  ...)

## S4 method for signature 'Occurrences'
text(x, type,  ...)

## S4 method for signature 'Occurrences'
pdf(object, background, file, width, height, dingbats = FALSE, ...)

Arguments

x	A data.frame or Spatial* object.
schema	Character. Columns to be searched for. Column "taxon" (case independent) has to be present in any case. If x inherits Spatial* gridcell can be missing and will be calculated.
object	An object of class "Occurrences" to be plotted.
background	An object of class "Background" to be used to set up plotting region with perfect alignment to background map when stacked graphically/visually.
type	Either ASIS (coordinates) or GRIDCELL.
file, width, height, dingbats	Arguments for pdf. See pdf.
...	Not used.

Details

Use the pdf function to plot occurrence points to top of map background saved mit pdf method for that class.

Value

An object of class Occurrences.

Author(s)

Roland Kaiser

See Also

background

Examples

e <- extent(13,14,46,47)
g <- floragrid(e)
x1 <- data.frame(taxon = "Genus species", gridcell = sample(g$GRIDCELL, 10))
x2 <- data.frame(taxon = "Genus species spp. subspecies", gridcell = sample(g$GRIDCELL, 10))
x <- rbind(x1, x2)
coordinates(x) <- gridcell2lnglat(x$gridcell)

o <- occurrences(x)

plot(o[o$taxon == "Genus species", ])

kardinal-eros/sabotag-tools documentation built on May 20, 2019, 7:21 a.m.