map.plot: map.plot

In jaredlander/mapping: Functions for Easy Mapping with ggplot2.

Description

Plot Maps

Usage

  map.plot(data, variable = NULL, longitude = "long",
    latitude = "lat", fill.color.low = muted("red"),
    fill.color.mid = "white",
    fill.color.high = muted("green"), space = "Lab",
    midpoint = mean(data[[variable]], na.rm = TRUE),
    path.color = "white", title = NULL, title.size = 15,
    title.hjust = 0.5, xlab = NULL, ylab = NULL,
    barheight = 15, formatter = percent,
    legend.position = c("right", "bottom", "left", "top", "none"),
    lhs = NULL, rhs = NULL,
    facet = c("none", "facet_wrap", "facet_grid"),
    wrap.nrow = NULL, wrap.ncol = NULL,
    scales = c("fixed", "free", "free_y", "free_x"),
    gradient = "2")

Arguments

data	data.frame resulting from using fortify on a shapefile object.
variable	Character indicating which column should be plotted.
longitude	Character indicating which column stores longitude values.
latitude	Character indicating which column stores latitude values.
fill.color.low	Color to use for bottom of gradient.
fill.color.mid	Color to use for middle of gradient.
fill.color.high	Color to use for top of gradient.
space	Color space to use for gradient.
midpoint	Position of mid point of scale, defaults to 0.
path.color	Color to use for shapefile lines.
title	Title of plot.
title.size	Size of Title font.
title.hjust	Horizontal adjustment of Title position.
xlab	X-axis label.
ylab	Y-axis label.
barheight	Height of legend bar.
formatter	How the legend numbers should be formatted. Takes a function.
legend.position	Position of legend.
lhs	Left side of formula to use for facetting.
rhs	Right side of formula to use for facetting.
facet	The type of facetting, if any, to use.
wrap.nrow	The number of rows to to use when using facet_wrap.
wrap.ncol	The number of columns to to use when using facet_wrap.
scales	The scales to be employed when faceting.
gradient	1 means scale_colour_gradient, 2 means scale_colour_gradient2

Details

Takes a data.frame containing shapefile data and plots it along with some measure.

Will probably need to make changes for when plotting continuous data.

Value

A ggplot object.

Author(s)

Jared P. Lander

Examples

## Not run: 
nyc.income <- join(nyc.df, income2010, by="Key")
mana <- nyc.income[nyc.income$County == 61, ]
map.plot(mana, "Median.Income", formatter=multiple_format(extra=dollar, multiple="K"))

## End(Not run)

jaredlander/mapping documentation built on May 18, 2019, 3:46 p.m.