r4ss (version 1.16)

SSplotMovementMap: Show movement rates on a map.

Description

Make a map with colored spatial cells and add arrows representing movement rates between cells.

Usage

SSplotMovementMap(replist=NULL, xlim, ylim,
           polygonlist, colvec, land="grey", xytable=NULL,
           moveage=5,moveseas=1,lwdscale=5,legend=TRUE,title=NULL)

Arguments

replist

optional list created by SS_output

xlim

range of longitude values in the map

ylim

range of latitude values in the map

polygonlist

a list of data frames, each with two columns representing the longitude and latitude values of the colored polygons. The order of elements in the list should match the numbering of areas in the SS model.

colvec

vector of colors for each polygon (if replist is provided)

land

color of landmasses in the map

xytable

data frame of latitude and longitude values which will be connected by the arrows representing movement rates. The order should match the order of areas in polygonlist and in the SS model. Not necessary if no arrows are shown o

moveage

age for which movemement rates will be represented

moveseas

season for which movement rates will be represented

lwdscale

scaling factor for arrows in the plot. The largest rate of movement shown will be scaled to have a line width equal to this value.

legend

add a legend to show the movement rate associated with the widest arrows

title

optional title to be added above map

Value