add_tickmarks: Add tickmarks to an existing plot

In pbs-assess/PACea: An R package of Pacific ecosystem information to help facilitate an ecosystem approach to fisheries management

Add tickmarks to an existing plot

Description

Add sensible smaller (unlabelled) tickmarks to both axes of an existing pacea temporal plot. Called from 'plot.pacea_index()', 'plot.pacea_recruitment()' etc. Is exported but unlikely to be needed externally.

Usage

add_tickmarks(
  obj_lub,
  y_tick_by,
  y_tick_start,
  y_tick_end,
  y_tick_max_number = 50,
  x_tick_extra_years,
  start_decade_ticks
)

Arguments

obj_lub	obj a 'pacea_index' object, which is a time series, with a date column that is the lubridate 'date' class.
y_tick_by	increment for y-axis ticks; gets overwritten in 'add_tickmarks()' if this yields more than 'y_tick_max_number' tickmarks. If using [plot.pacea_biomass()] the default of 1 gets automatically changed to 0.25 for 'plot(hake_biomass)'.
y_tick_start	where to start y-axis tickmarks, set automatically if not specified (may need to occasionally specify)
y_tick_end	where to end y-axis tickmars, as for 'y_tick_start'
y_tick_max_number	maximum number of y tickmarks.
x_tick_extra_years	number of extra years to expand around the range of data for which to add annual tick marks (does not expand the axis); in hindsight could have simplified this in 'add_tickmarks()', but just made the default big here.
start_decade_ticks	where to start tickmarks for decades (defaults to 1800 as hard to automate)

Value

adds tickmarks to an existing plot

Author(s)

Andrew Edwards

Examples

## Not run: 
plot.pacea_index(oni)   # see end of that function for usage

## End(Not run)

pbs-assess/PACea documentation built on April 17, 2025, 11:36 p.m.