ADDPREPROC

Add commands in the PREPROC field of a datafile

    A = ADDPREPROC(A,PREPROC,PARS,OUTSIZE)

Input
A	Datafile
PREPROC	String with preprocessing command
PARS	Cell array with parameters (default empty)
OUTSIZE	Output size of objects

Output
A	Datafile

Description

Extends the structure array of preprocessing commands, A.PREPROC( ) with one element, having two fields
A.PREPROC(N).PREPROC = PREPROC A.PREPROC(N).PARS = PARS

Preprocessing can only be defined for raw datafiles that do not contain  datasets. It is an error to define preprocessing for a datafile that  points to MAT files. In that case datasets are expected and preprocessing  is superfluous.

The first command in the PREPROC field should always be a file read  command. The DATAFILE constructor stores by default IMREAD. Use  SETPREPROC to clear the PREPROC field and replace it by another  command.

PRTools needs to know the size of the output objects. If not supplied in  the call, it is found by processing the first object. This may take some  time.

See also

datafiles, setpreproc, addpostproc, datasets,