barmap: Interactive Bar plot and map

In tibo31/GeoXp: Interactive Exploratory Spatial Data Analysis

Interactive Bar plot and map

Description

The function barmap() draws a bar plot (vertical bar) of the given factor variable name.var and a map with sites of coordinates sf.obj.

Usage

barmap(sf.obj, name.var, type = c("count","percent"), names.arg = "", 
 criteria = NULL, carte = NULL, identify = NULL,
 cex.lab = 0.8, pch = 16, col = "lightblue3", xlab = "", ylab = "", 
 axes = FALSE, lablong = "", lablat = "")

Arguments

sf.obj	object of class sf
name.var	a character; attribute name or column number in attribute table
type	Character string indicating type of histogram to be drawn. "percent" and "count" give relative frequency and frequency histograms.
names.arg	a vector of level names of name.var
criteria	a vector of boolean of size the number os spatial units, which permit to represent preselected sites with a cross, using the tcltk window
carte	matrix with 2 columns for drawing spatial polygonal contours : x and y coordinates of the vertices of the polygon
identify	if not NULL, the name of the variable for identifying observations on the map
cex.lab	character size of label
pch	a vector of symbol which must be equal to the number of level else all sites are printed whith pch[1]
col	a vector of colors which must be equal to the number of level else all sites and all bars are printed with col[1]
xlab	a title for the graphic x-axis
ylab	a title for the graphic y-axis
axes	a boolean with TRUE for drawing axes on the map
lablong	name of the x-axis that will be printed on the map
lablat	name of the y-axis that will be printed on the map

Details

The selection of a bar on the bar plot results in the corresponding sites coloured on the map with the corresponding colour observed on the bar. Reversely, the selection of sites on the map by "points" or "polygon" results in the drawing of the sub-barplot in red.

Value

In the case where user click on save results button, a vector of integer is created as a global variable in last.select object. It corresponds to the number of spatial units selected just before leaving the Tk window.

Author(s)

Thomas-Agnan C., Aragon Y., Ruiz-Gazen A., Laurent T., Robidou L.

References

Thibault Laurent, Anne Ruiz-Gazen, Christine Thomas-Agnan (2012), GeoXp: An R Package for Exploratory Spatial Data Analysis. Journal of Statistical Software, 47(2), 1-23.

Roger S.Bivand, Edzer J.Pebesma, Virgilio Gomez-Rubio (2009), Applied Spatial Data Analysis with R, Springer.

See Also

histomap, histobarmap, scattermap, densitymap

Examples

######
# data eire
require(sf)
eire <- st_read(system.file("shapes/eire.shp", package="spData")[1])

# a basic usage ...
barmap(eire, "pale")

# ... with all options
barmap(eire, 3, type = "percent", col = c("pink", "orange"), 
  names.arg = c("not pale", "pale"), 
  criteria = NULL, identify = TRUE, cex.lab = 0.8, 
  xlab = "Are majority people are pale ?", ylab = "Percent", 
  axes = TRUE, lablong = "longitude", lablat = "latitude")

tibo31/GeoXp documentation built on April 8, 2023, 7:50 a.m.