r legend for multiplots code example

Example 1: how to legend a multi graph with plot in r

plot_colors <- c("blue","black", "green", "orange", "pink")
  text <- c("Fabricated Metal", "Iron and Steel", "Paper", 
  "Beverages", "Tobacco")
  plot.new()
  par(xpd=TRUE)
  legend("center",legend = text, text.width = max(sapply(text, strwidth)),
         col=plot_colors, lwd=5, cex=1, horiz = TRUE)
  par(xpd=FALSE)

Example 2: common legend for multiple plots in r

# for ggplot
ggarrange(bxp, dp,  common.legend = TRUE)

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