PlotPercentLarge: Plot the number and percent of large clams in a sample per...
In SurfClam/bio.surfclam:

Function to subset loci and populations

1 2	PlotPercentLarge(lfdata, SelBank, buffer = 3, plot_loess = FALSE, returnData = FALSE)

`lfdata`	is the length frequency data from the database. Columns should include AREA (3 for Grand Bank and 4 for Banquereau) YEAR, SHELL_LEN (length in mm) and NUM (frequency of this measurement in a given year).
`SelBank`	a numeric delimiter of the assessment region (1 = Banquereau and 2 = Grand Bank). This can also correspond to the 'bank' variable in lfdata.
`buffer`	an integer which defines the number of percentage points above the maximum percent of large clams in a given year to be added to the plot limits.
`plot_loess`	Logical query (default = FALSE) specifying whether a loess smoothed regression should be added to the plot.