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_rectangle(
widget,
x,
y,
color = "gray80",
linecolor = "black",
linewidth = 1,
label = "rectangle",
parent = "root",
index = 0,
...
)
Arguments
- widget
widget path name as a string
- x
x coordinates
- y
y coordinates
- color
fill color, if empty string
""
, then the fill is transparant- linecolor
outline color
- linewidth
linewidth of outline
- label
label used in the layers inspector
- parent
group layer
- index
of the newly added layer in its parent group
- ...
additional state initialization arguments, see
l_info_states
Examples
if(interactive()){
p <- l_plot()
l <- l_layer_rectangle(p, x=c(2,3), y=c(1,10), color='steelblue')
l_scaleto_layer(l)
}