getCategoryFrequenciesTree: retrieves category frequencies for one tree
In adibender/rFtools: Tools for the analysis of Random Forests (and cforest)

Description Usage Arguments Details Value See Also

Given a specific tree from a randomForest-object this function retrieves the category frequencies for each SNP and for every (not terminal) node in the considered tree.

1	getCategoryFrequenciesTree(nodeObservationsTree, X, splitVariablesTree)

`nodeObservationsTree`	A `list` of the same length as number of not terminal nodes in the tree. Each element being a `logical` vector indicating the observations 'active' in the according nodes of the tree.
`X`	A `matrix` containing the SNP variables of the data set used for the computation of the `randomForest`-object from which the considered tree is extracted from.
`splitVariablesTree`	A `numeric` vector containing the variables/SNPs used for splitting the not terminal nodes in the considered tree.

To obtain the nodeObservationsTree-object take a look at the getSplitInformationTree and -Forest functions. The split variables are also in the objects returned by these functions, but can also be obtained by getSplitVariablesTree or -Forest functions.

A list with as many entries as not terminal nodes in the tree. Each contains a 5 x n.snps matrix as it is returned by getCategoryFrequenciesNode.

getCategoryFrequenciesNode, getCategoryFrequenciesForest

adibender/rFtools documentation built on May 14, 2019, 5:13 a.m.