iraf.net

NUMBER:	505
MODULE:	data.export
SYSTEM:	V2.11 - V2.12.1
DATE:	Fri Aug  9 15:03:10 MST 2002
FROM:	fitz

BUG:	The task was failing to write a PPM file properly when the input
	image contained an odd number of columns, resulting in a corrupted
	image.

STATUS:	PPM files interleave the pixels, but when there are an odd number of
	columns in the image the resulting line contains an odd number of
	bytes/line.  IRAF file I/O cannot properly write data and the task
	was not structured to buffer lines for a case such as this.  The
	task will now truncate the last column of the input image so the
	output will contain an even number of bytes.  The workaround is
	simply to copy out a new image with an even number of columns before
	running the task.

	Fixed for future releases or contact site support for a code change.