CreateCategoricalLegend: Creates a categorical legend for a map
In Blakemassey/gisr: Functions for Spatial Data Manipulation and Plotting

Description Usage Arguments Details Value

Creates a legend for categorical data

1
2
3

Usage: CreateCategoricalLegend (metadata, metadata_layer, color_alpha,
  pos_x, pos_y, main, main_cex, main_col, lab_col, signif_digits, left,
  plot_new)

`metadata`	location of metadata .csv file. Metadata file must contain "id" and "icon_color" columns.
`metadata_layer`	not required, column name in metadata used for legend labels
`color_alpha`	two-digit rbga alpha value, "00" to "ff".
`pos_x`	relative position of left and right edge of color bar on first axis, [0,1]. Default is c(0.5, 0.55).
`pos_y`	relative position on lower and upper edge of colar bar on second axis, [0,1]. Default is c(0.05, 0.9).
`main`	main title, written above the color bar. Default is NA.
`main_cex`	relative size of main title. Default is 1.
`main_col`	color of main title, default is "black".
`lab_col`	color labels, default is "black".
`left`	logical indicating whether to put the labels on the left (TRUE) or on the right (FALSE). Default is FALSE.
`plot_new`	logical indicating whether to create a new plot, default is TRUE.