extractDrugWHIM: Calculate Holistic Descriptors Described by Todeschini et al.

Description Usage Arguments Details Value Author(s) References Examples

View source: R/345-extractDrugWHIM.R

Description

Calculate Holistic Descriptors Described by Todeschini et al.

Usage

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extractDrugWHIM(molecules, silent = TRUE)

Arguments

molecules

Parsed molucule object.

silent

Logical. Whether the calculating process should be shown or not, default is TRUE.

Details

Holistic descriptors described by Todeschini et al, the descriptors are based on a number of atom weightings. There are six different possible weightings:

Currently weighting schemes 1, 2, 3, 4 and 5 are implemented. The weight values are taken from Todeschini et al. and as a result 19 elements are considered. For each weighting scheme we can obtain

Though Todeschini et al. mentions that for planar molecules only 8 directional WHIM descriptors are required the current code will return all 11.

Value

A data frame, each row represents one of the molecules, each column represents one feature. This function returns 17 columns:

Each name will have a suffix of the form .X where X indicates the weighting scheme used. Possible values of X are

Author(s)

Nan Xiao <https://nanx.me>

References

Todeschini, R. and Gramatica, P., New 3D Molecular Descriptors: The WHIM theory and QAR Applications, Persepectives in Drug Discovery and Design, 1998, ?:355-380.

Examples

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sdf = system.file('sysdata/OptAA3d.sdf', package = 'Rcpi')

mol = readMolFromSDF(sdf)
dat = extractDrugWHIM(mol)
head(dat)

Rcpi documentation built on June 23, 2017, 4:40 a.m.

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