ChemmineR (version 2.24.2)

sdf2str: SDF to SDFstr

Description

Converts SDF to SDFstr. Its main use is to facilitate the export to SD files. It contains optional arguments to generate custom SDF output.

Usage

sdf2str(sdf, head, ab, bb, db, cid = NULL, sig = FALSE, ...)

Arguments

sdf

object of class SDF

head

optional character vector to supply custom header block

ab

optional matrix to supply custom atom block

bb

optional matrix to supply custom bond block

db

optional character vector to supply custom data block

cid

character can be provided to inject custom compound ID into header block

sig

if = TRUE then the ChemmineR signature will be injected into the header block for tracking purposes

...

option to pass on additional arguments

Value

sdfstr

SDF data of one molecule collapsed to character vector

Details

If the export function write.SDF is supplied with an SDFset object, then sdf2str is used internally to customize the export of many molecules to a single SD file using the same optional arguments.

References

SDF format definition: http://www.symyx.com/downloads/public/ctfile/ctfile.jsp

See Also

Coerce functions: sdfstr2list, sdf2str, SDFset2list, SDFset2SDF

Export function: write.SDF

Examples

## Instance of SDF class
data(sdfsample); sdfset <- sdfsample
sdf <- sdfset[[1]]

## Customize SDF blocks for export to SD file
sdf2str(sdf=sdf, sig=TRUE, cid=TRUE) # uses default SDF components
sdf2str(sdf=sdf, head=letters[1:4], db=NULL) # uses custom components for header and datablock

## The same arguments can be supplied to the write.SDF function for
## batch export of custom SDFs
# write.SDF(sdfset[1:4], file="sub.sdf", sig=TRUE, cid=TRUE, db=NULL)