fortify.sp: Fortify method for classes from the sp package.

In TomeTiger/ggplot2: Create Elegant Data Visualisations Using the Grammar of Graphics

Description

To figure out the correct variable name for region, inspect as.data.frame(model).

Usage

## S3 method for class 'SpatialPolygonsDataFrame'
fortify(model, data, region = NULL,
  ...)

## S3 method for class 'SpatialPolygons'
fortify(model, data, ...)

## S3 method for class 'Polygons'
fortify(model, data, ...)

## S3 method for class 'Polygon'
fortify(model, data, ...)

## S3 method for class 'SpatialLinesDataFrame'
fortify(model, data, ...)

## S3 method for class 'Lines'
fortify(model, data, ...)

## S3 method for class 'Line'
fortify(model, data, ...)

Arguments

model	SpatialPolygonsDataFrame to convert into a dataframe.
data	not used by this method
region	name of variable used to split up regions
...	not used by this method

Examples

if (require("maptools")) {
 sids <- system.file("shapes/sids.shp", package="maptools")
 nc1 <- readShapePoly(sids,
   proj4string = CRS("+proj=longlat +datum=NAD27"))
 nc1_df <- fortify(nc1)
}

TomeTiger/ggplot2 documentation built on May 29, 2019, 7:53 a.m.