Legend for Typology Maps

Description

Plot legend for typology maps.

Usage

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legendTypo(pos = "topleft", title.txt = "Title of the legend",
  title.cex = 0.8, values.cex = 0.6, col, categ, cex = 1, nodata = TRUE,
  nodata.txt = "No data", nodata.col = "white", frame = FALSE,
  symbol = "box")

Arguments

pos

position of the legend, one of "topleft", "top", "topright", "left", "right", "bottomleft", "bottom", "bottomright".

title.txt

title of the legend.

title.cex

size of the legend title.

values.cex

size of the values in the legend.

col

a vector of colors.

categ

vector of categories.

cex

size of the legend. 2 means two times bigger.

nodata

if TRUE a "no data" box or line is plotted.

nodata.txt

label for "no data" values.

nodata.col

color of "no data" values.

frame

whether to add a frame to the legend (TRUE) or not (FALSE).

symbol

character; 'line' or 'box'

Examples

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data("nuts2006")
plot(nuts0.spdf, col = "grey")
box()

# Define labels and colors
someLabels <- c("red color", "yellow color", "green color", "black color")
someColors <- c("red", "yellow", "green", "black")

# plot legend
legendTypo(pos = "bottomleft", title.txt = "Title of the legend", title.cex = 0.8,
           values.cex = 0.6, col = someColors, categ = someLabels, 
           cex = 0.75,
           nodata = TRUE, nodata.txt = "no data", frame = TRUE, symbol="box")
legendTypo(pos = "topright", title.txt = "", 
           title.cex = 1.5, cex = 1.25,
           values.cex = 1, col = someColors, categ = someLabels, 
           nodata = FALSE, frame = FALSE, symbol="line")

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