# Principle Components Analysis

O.Conrad (c) 2010
Principle Components Analysis (PCA) for grids. Implementation based on F. Murtagh's code as provided by the StatLib web site.
References:
Bahrenberg, G., Giese, E., Nipper, J. (1992): Statistische Methoden in der Geographie 2 - Multivariate Statistik. pp.198-277.

## Parameters

Grid system
Grid system
  Grid system
Grids
Input Grid list
Principle Components
Output Grid list
Method
Choice
  Available choices: correlation matrix, variance-covariance matrix, sums-of-squares-and-cross-products matrix
Number of Components
Integer
  maximum number of calculated first components; set to zero to get all