Plot symbols based on qualitative data.
Usage
mf_symb(
x,
var,
pal = "Dynamic",
alpha = 1,
rev = FALSE,
border = getOption("mapsf.fg"),
pch,
cex = 1,
lwd = 0.7,
col_na = "grey",
pch_na = 4,
cex_na = 1,
val_order,
leg_pos = mf_get_leg_pos(x),
leg_title = var,
leg_title_cex = 0.8,
leg_val_cex = 0.6,
leg_val_rnd = 2,
leg_no_data = "No data",
leg_frame = FALSE,
leg_frame_border = getOption("mapsf.fg"),
leg_adj = c(0, 0),
leg_fg = getOption("mapsf.fg"),
leg_bg = getOption("mapsf.bg"),
leg_size = 1,
add = TRUE
)
Arguments
- x
object of class
sf
- var
name(s) of the variable(s) to plot
- pal
a set of colors or a palette name (from hcl.colors)
- alpha
if
pal
is a hcl.colors palette name, the alpha-transparency level in the range [0,1]- rev
if
pal
is a hcl.colors palette name, whether the ordering of the colors should be reversed (TRUE) or not (FALSE)- border
border color
- pch
pch (point type) for symbols
- cex
cex (point size) for symbols
- lwd
border width
- col_na
color for missing values
- pch_na
pch (point type) for NA values
- cex_na
cex (point size) for NA values
- val_order
values order, a character vector that matches var modalities
- leg_pos
position of the legend, one of 'topleft', 'top','topright', 'right', 'bottomright', 'bottom', 'bottomleft', 'left' or a vector of two coordinates in map units (c(x, y)). If leg_pos = NA then the legend is not plotted. If leg_pos = 'interactive' click onthe map to choose the legend position.
- leg_title
legend title
- leg_title_cex
size of the legend title
- leg_val_cex
size of the values in the legend
- leg_val_rnd
number of decimal places of the values in the legend
- leg_no_data
label for missing values
- leg_frame
whether to add a frame to the legend (TRUE) or not (FALSE)
- leg_frame_border
border color of the legend frame
- leg_adj
adjust the postion of the legend in x and y directions
- leg_fg
color of the legend foreground
- leg_bg
color of the legend backgournd
- leg_size
size of the legend; 2 means two times bigger
- add
whether to add the layer to an existing plot (TRUE) or not (FALSE)
Examples
mtq <- mf_get_mtq()
mf_map(mtq)
mf_map(mtq, "STATUS", "symb")
mtq[6, "STATUS"] <- NA
mf_map(mtq)
mf_map(
x = mtq, var = "STATUS", type = "symb",
pch = c(21:23), pal = c("red1", "tan1", "khaki1"),
border = "grey20", cex = c(1.5, 1, .9), lwd = .5,
val_order = c("Prefecture", "Sub-prefecture", "Simple municipality"),
pch_na = 24, leg_frame = TRUE
)