Karel Hron and Peter Filzmoser for a long-term and fruitful cooperation
Karel Hron for providing his slides on compositional data analysis (used in some parts of the presentation)
Example compositional spatial and temporal data: Proportions of land use/land types or forest fragmentation proportions in each grid cell with potential (covariates may include elevation range, road length, population, median household income, and housing levels).
The answer: it (always) depends on the analysis goals
A NO GO:
statistical analysis of compositional data using standard statistical methods with the assumption of Euclidean geometry in real space is just wrong but typically applied in practice.
Absolute and relative concentrations of Phosphor (P) for samples extracted by X-ray fluorescence (XRF) from agricultural soils in Europe.