Numbered files

There are three ways open opening a numbered sequence of files. By opening the first file in the sequence, by open with a filename containing %d in place of the number or if the number is before the extension by omitting the number entirely.

Using %d in the filename.

Using %d you can explicitly set the format of the file name to be used. It is used by placing the %d in the filename where the number is expected. name%d.xxx can be used to read a sequence of files such as:

name1.xxx name2.xxx name3.xxx

If you wish the filenames to be zero padded you can add the number of digits between the % and the d. So name%3d.xxx can be used to read or write the following files:

name001.xxx name002.xxx name003.xxx

Opening the first file in the sequence.

If the file being opened cannot be interpreted as a stream themselves (such as pnm ) you can just open the first file in the sequence and the rest of the sequence will be found automaticly. So you could open the following sequence,

name001.xxx name002.xxx name003.xxx

with the filename name001.xxx.

Omiting the number completely.

If the filename is in the form nameNNN.XXX where NNN is some number and XXX is the extention. The file may be opened as name.XXX provided there no file of that name exists. The system will scan the directory for files which conform to this format and work out the range of digits, and if zero padding is being used.

Normal classes:

DPFileSequenceBaseC	File Sequence.
DPIFileSequenceC	Input File Sequence
DPOFileSequenceC	Input File Sequence

Develop classes:

DPFileSequenceBaseBodyC	File Sequence body.
DPIFileSequenceBodyC	Input File Sequence
DPOFileSequenceBodyC	Input File Sequence