Diagnostic plot a Height-Diameter model residuals

Description

Plotting method for class hdmod

Usage

## S3 method for class 'hdmod'
plot(x, col.point = "blue", highlight = "red", standd = TRUE, 
           cex=1, corD=FALSE, ask=TRUE, ...)

Arguments

Details

The function makes residual plots on a fitted H-D model, which can be used to explore whether the fixed part satisfactorily models the shape of H-D models. The residuals are plotted on diameters standardized at plot level (dsd) or on raw diameters (d) according to argument standd. Here dsd=(d-D)/SDD, where d is tree diameter, D and SDD are the mean and standard deviation of diameters on the plot in question. Using plot-specific standardized diameter ensures that e.g., the medium-sized trees of the plot are always in the middle of the plot, which provides a better graph to explore the fit at the plot level in a dataset where the diameter range varies between plots.

Author(s)

Lauri Mehtatalo (lauri.mehtatalo@uef.fi)

See Also

The function plots model residuals on the required type of diameter and adds a whiskers plot using mywhiskers with argument se=TRUE.

Examples

data(spati)

model<-fithd(spati$d,spati$h,spati$plot)

plot(model)

Results