Extracts the I-spline values from a gdm object. There is one I-spline for each predictor that has at least one non-zero coefficient in the fitted model.
Usage
isplineExtract(model)
Arguments
model
A gdm object from gdm.
Value
A list with two items. The first item contains the x-values (actual values of the predictors) of the I-splines and the second item contains the y-values (partial ecological distances) of the fitted I-splines.
References
Ferrier S, Manion G, Elith J, Richardson, K (2007) Using generalized dissimilarity modelling to analyse and predict patterns of beta diversity in regional biodiversity assessment. Diversity & Distributions 13, 252-264.
Fitzpatrick MC, Sanders NJ, Normand S, Svenning J-C, Ferrier S, Gove AD, Dunn RR (2013). Environmental and historical imprints on beta diversity: insights from variation in rates of species turnover along gradients. Proceedings of the Royal Society: Series B 280, art. 1768