l_layer_polygons: Layer polygons

Description

Loon's displays that are based on Cartesian coordinates (i.e. scatterplot, histogram and graph display) allow for layering visual information including polygons, text and rectangles.

Usage

l_layer_polygons(
  widget,
  x,
  y,
  color = "gray80",
  linecolor = "black",
  linewidth = 1,
  label = "polygons",
  parent = "root",
  index = 0,
  group = NULL,
  active = TRUE,
  ...
)

Arguments

widget

widget path name as a string

list with vectors with x coordinates

list with vectors with y coordinates

color

vector with fill colors, if empty string "", then the fill is transparant

linecolor

vector with outline colors

linewidth

vector with line widths

label

label used in the layers inspector

parent

group layer

index

of the newly added layer in its parent group

group

separate x vector or y vector into a list by group.

active

a logical determining whether objects appear or not (default is TRUE for all).

...

additional state initialization arguments, see l_info_states

Value

layer object handle, layer id

Details

For more information run: l_help("learn_R_layer")

Examples

Run this code

# NOT RUN {
if(interactive()){

p <- l_plot()

l <- l_layer_polygons(
     p,
     x = list(c(1,2,1.5), c(3,4,6,5,2), c(1,3,5,3)),
     y = list(c(1,1,2), c(1,1.5,1,4,2), c(3,5,6,4)),
     color = c('red', 'green', 'blue'),
     linecolor = ""
)
l_scaleto_world(p)

l_info_states(l, "color")


# Set groups
p <- l_plot()
l_layer_polygons(p,
                 x = c(1, 2, 1.5, 3, 4, 6, 5, 2, 1, 3, 5, 3),
                 y = c(1, 1, 2, 1, 1.5, 1, 4, 2, 3, 5, 6, 4),
                 group = c(rep(1,3), rep(2,5), rep(3, 4)))
l_scaleto_world(p)

}
# }