create.lats: Creating a table of Latitudes and Longitudes

In fossil: Palaeoecological and Palaeogeographical Analysis Tools

Description

Create a matrix of locations with a column of latitudes and longitudes

Usage

  create.lats(x, loc="locality", long="longitude", lat="latitude")

Arguments

x	a table arranged in columnar format, with one column indicating the locations, another the latitude and another the longitude
loc	the name or number of the column giving the names of the locations to be used
long	the name or number of the column giving the longitude of the locations
lat	the name or number of the column giving the latitude of the locations

Details

This function will create a location table with longitude (X) and latitude (Y) or their equivalents for every location. This function ceates a matrix in the format needed for most of the geographic functions found in the fossil package.

Value

A matrix with a column of longitude and latitude, respectively with rownames correspnding to each location

Author(s)

Matthew Vavrek

See Also

create.matrix

Examples

#to reproduce the fdata.lats dataset
data(fdata.list)
create.lats(fdata.list, loc="locality", long="longitude", lat="latitude")

Example output

Loading required package: sp
Loading required package: maps
Loading required package: shapefiles
Loading required package: foreign

Attaching package: 'shapefiles'

The following objects are masked from 'package:foreign':

    read.dbf, write.dbf

     longitude latitude
locA      -109       47
locB       -90       45
locC      -109       41
locD       -99       36
locE      -115       40
locF      -119       42
locG      -113       44
locH       -94       40
locI      -110       33
locJ      -116       41
locK       -94       46
locL      -108       39

fossil documentation built on March 23, 2020, 5:06 p.m.