caa a22 4500 469064692 CHVBK 20180323132904.0 cr unu---uuuuu 170328e19920401xx s 000 0 eng 10.1007/BF00893751 doi (NATIONALLICENCE)springer-10.1007/BF00893751 Endmember graphics [Elektronische Daten] [Ross Renner, Simon Jurke] Thek points inp-space corresponding to a specified set ofk (k<p) linearly independent endmember estimates associated with ap-variate (n×p) compositional datasetX, define the vertices of a (k−1) dimensional simplexH. Then estimated mixtures which together account for the systematic variation in the datasetX, are each convex combinations of thek fixed endmember estimates. Accordingly, then-points inp-space which represent these mixtures must be interior points of the simplexH. The purpose of this paper is to describe a simple graphical procedure for examining the positions of the estimated mixtures relative tok=3 or 4 putative endmembers, and for assessing their compliance or otherwise with the convexity constraints. Since the mixture coefficients must be estimated first in order to obtain the mixture estimates, the paper begins with a review of the least-squares partitioning procedure. International Association for Mathematical Geology, 1992 mixture nationallicence endmember nationallicence partitioning methods nationallicence Q-mode factor analysis nationallicence ternary diagram nationallicence Renner Ross Institute of Statistics and Operations Research, Victoria University of Wellington, Wellington, New Zealand aut Jurke Simon Institute of Statistics and Operations Research, Victoria University of Wellington, Wellington, New Zealand aut Mathematical Geology Kluwer Academic Publishers-Plenum Publishers 24/3(1992-04-01), 287-303 0882-8121 24:3<287 1992 24 11004 https://doi.org/10.1007/BF00893751 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00893751 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Renner Ross Institute of Statistics and Operations Research, Victoria University of Wellington, Wellington, New Zealand aut NATIONALLICENCE 700 1- Jurke Simon Institute of Statistics and Operations Research, Victoria University of Wellington, Wellington, New Zealand aut NATIONALLICENCE 773 0- Mathematical Geology Kluwer Academic Publishers-Plenum Publishers 24/3(1992-04-01), 287-303 0882-8121 24:3<287 1992 24 11004 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer