plotYieldObservedVsModel: Plotting observed vs. model yields

In mizer: Dynamic Multi-Species Size Spectrum Modelling

Plotting observed vs. model yields

Description

If yield observations are available for at least some species via the yield_observed column in the species parameter data frame, this function plots the yield of each species in the model against the observed yields. When called with a MizerSim object, the plot will use the model yields predicted for the final time step in the simulation.

Usage

plotYieldObservedVsModel(
  object,
  species = NULL,
  ratio = FALSE,
  log_scale = TRUE,
  return_data = FALSE,
  labels = TRUE,
  show_unobserved = FALSE
)

plotlyYieldObservedVsModel(
  object,
  species = NULL,
  ratio = FALSE,
  log_scale = TRUE,
  return_data = FALSE,
  show_unobserved = FALSE
)

Arguments

object	An object of class MizerParams or MizerSim.
species	The species to be included. Optional. By default all observed yields will be included. A vector of species names, or a numeric vector with the species indices, or a logical vector indicating for each species whether it is to be included (TRUE) or not.
ratio	Whether to plot model yield vs. observed yield (FALSE) or the ratio of model : observed yield (TRUE). Default is FALSE.
log_scale	Whether to plot on the log10 scale (TRUE) or not (FALSE). For the non-ratio plot this applies for both axes, for the ratio plot only the x-axis is on the log10 scale. Default is TRUE.
return_data	Whether to return the data frame for the plot (TRUE) or not (FALSE). Default is FALSE.
labels	Whether to show text labels for each species (TRUE) or not (FALSE). Default is TRUE.
show_unobserved	Whether to include also species for which no yield observation is available. If TRUE, these species will be shown as if their observed yield was equal to the model yield.

Details

Before you can use this function you will need to have added a yield_observed column to your model which gives the observed yield in grams per year. For species for which you have no observed yield, you should set the value in the yield_observed column to 0 or NA.

The total relative error is shown in the caption of the plot, calculated by

TRE = \sum_i|1-\rm{ratio_i}|

where \rm{ratio_i} is the ratio of model yield / observed yield for species i.

Value

A ggplot2 object with the plot of model yield by species compared to observed yield. If return_data = TRUE, the data frame used to create the plot is returned instead of the plot.

Examples

# create an example
params <- NS_params
species_params(params)$yield_observed <-
    c(0.8, 61, 12, 35, 1.6, NA, 10, 7.6, 135, 60, 30, NA)
params <- calibrateYield(params)

# Plot with default options
plotYieldObservedVsModel(params)

# Plot including also species without observations
plotYieldObservedVsModel(params, show_unobserved = TRUE)

# Show the ratio instead
plotYieldObservedVsModel(params, ratio = TRUE)

mizer documentation built on April 26, 2023, 5:12 p.m.