mapMulti: Multipanel Map of Locations
In JVAdams/EchoNet2Fish: Estimate Fish Abundance from Acoustic Echoes and Net Catch

Multipanel map of locations, one map for each group.

mapMulti(
  bygroup,
  sug = sort(unique(bygroup)),
  plottext = FALSE,
  ID = 1,
  emphasis = NULL,
  short = TRUE,
  lon,
  lat,
  samescale = TRUE,
  rlon = NULL,
  rlat = NULL,
  cushion = 0.1,
  IDcol = NULL,
  mapcol = "gray",
  boxcol = "gray",
  misscol = "brown",
  misstext = " - No sites",
  mar = c(0, 0, 2.5, 0)
)

`bygroup`	Vector, identifying the group membership of the locations to be mapped.
`sug`	Vector, identifying the unique groups to which locations may belong, default sort(unique(`bygroup`)).
`plottext`	Logical scalar indicating if text (TRUE) or symbols (FALSE, default) should be printed at each location.
`ID`	Vector, plot symbol (if `plottext`=FALSE) or text (if `plottext`=TRUE) to print on the map at each location, either of length 1 or the same length as `bygroup`, default 1.
`emphasis`	Logical vector, indicating observations that should be emphasized on the map, same length as `bygroup`, default NULL.
`short`	Logical scalar, indicating aspect of map area. If TRUE, the default, the mapped area is assumed to be wider (longitudinally) than tall. Used to better arrange multiple maps on a single page.
`lon`	A numeric vector of longitudes in decimal degrees.
`lat`	A numeric vector of latitudes in decimal degrees. Same length as `lon`.
`samescale`	Logical scalar, indicating if the same (TRUE, default) or different (FALSE) lon/lat scales should be used for all panels.
`rlon`	A numeric vector of length 2, range of longitudes to map, in decimal degrees. The default, NULL, means that the range of `lon` will be used, either over all panels (if `samescale`=TRUE) or for each panel separately (if `samescale`=FALSE).
`rlat`	A numeric vector of length 2, range of latitudes to map, in decimal degrees. The default, NULL, means that the range of `lat` will be used, either over all panels (if `samescale`=TRUE) or for each panel separately (if `samescale`=FALSE).
`cushion`	A numeric scalar indicating the amount of cushion to add to the `rlon` and `rlat` ranges in decimal degrees, default 0.1.
`IDcol`	A vector, the color used to map locations, same length as `bygroup`. If NULL, the default, a range of colors will be assigned automatically.
`mapcol`	A scalar, the color used to draw the map lines (e.g., lake boundary), default "gray".
`boxcol`	A scalar, the color used to draw the box around the map, default "gray".
`misscol`	A scalar, the color used to label maps with no locations in the given bygroup, default "brown".
`misstext`	A character scalar, the text used to label maps with no locations in the given bygroup, default " - No sites".
`mar`	A numeric vector of length 4, the number of lines of margin c(bottom, left, top, right) around each plotted map plot, default c(0, 0, 2.5, 0).

## Not run: 
 mygroup <- c(1, 1, 1, 2, 2, 2, 3, 3, 3)
 myID <- LETTERS[1:9]
 mylon <- rnorm(9, mean=-82)
 mylat <- rnorm(9, mean=45)
 mapMulti(bygroup=mygroup, plottext=TRUE, ID=myID,
   emphasis=myID %in% c("G", "A"), cushion=0, lon=mylon, lat=mylat)
 mapMulti(bygroup=mygroup, sug=1:4, short=FALSE, lon=mylon, lat=mylat,
   samescale=FALSE)

## End(Not run)