Helper to add a bar image legend to plots
Usage
legend_bar(position, col, width_prop = 0.03, heigh_prop = 0.18,
title = "Legend", labels = c("Low", "High"), digits = 0,
labels_offset = 0.2, horizontal = FALSE, alpha = 1, border = NULL,
cex = NULL, inset = 0.05, insetx = NULL, insety = NULL)Arguments
- position
(numeric or character) position of the bottom left corner of the legend. If numeric, x and y coordinates. If character, options are: "bottomright", "bottom", "bottomleft", "left", "topleft", "top", "topright", "right", or "center".
- col
color palette. A vector of contiguous colors. It can be generated using functions like
purplow(e.g.,darkros(255)).- width_prop
width of bar legend represented as a proportion of the entire plotting width. Default = 0.03.
- heigh_prop
heigh of bar legend represented as a proportion of the entire plotting heigh. Default = 0.18.
- title
legend title. Default = "Legend".
- labels
(numeric or character) labels for the legend. Default = c("Low", "High").
- digits
(numeric) number of decimal places to round numeric labels. Default = 0.
- labels_offset
offset of labels from bar. Default = 0.2.
- horizontal
(logical) should the legend be horizontal. Default = FALSE.
- alpha
(numeric) alpha level 0-1. Default = 1.
- border
color for the border of the legend bar. The default, NULL, does not plot a border.
- cex
character expansion factor relative to current. Default = NULL.
- inset
inset distances from plot margins relative to plot region. Default = 0.05.
- insetx
inset from x margins. The default, NULL, uses
inset.- insety
inset from y margins. The default, NULL, uses
inset.