plot_ppc_combi(table, xy_lim = NULL)a ggplot2 plot object
data.frame containing return values of calls to plot_ppc()
optional numeric, limits of x and y axis for plotting
The function expects a data.frame with five mandatory and one optional column. The mandatory columns are as follows:
pred: mean of predictions e.g. frond number for lemna
max: maximum of predictions
min: minimum of predictions
obs: observations
PPC: color code
The optional column is to be named study and contains a study identifier.
If more than one study identifier is present in the table, individual
studies will be plotted in different colors and a legend will be displayed.
The function is called by plot_ppc where the column names are defined
(see rs_ppc object).