File specification

A matrix file, containing one or more matrices, is specified by a sequence of key=value pairs, separated by semicolons.

Common keys that are always required:

Key	Description	Valid values
file	Path to the file containing the matrices	Existing file path
format	Format of the file containing the matrices	txt (Text format) mtp (Minutp format) visum (PTV Visum binary format) omx (Open Matrix Format) 4g (4g Format)

Additional input file keys (depending on the format):

Format	Key	Description	Valid values	Default
txt	encoding	Text encoding	Valid encoding name	ascii
	delim	Column delimiter	comma tab semicolon space	tab
	separator	Decimal separator	comma point	point
	e3separator	Thousand separator	comma point none	none
	header	File contains header line	false true	true
mtp	prec	Multiplier applied to the matrices	Integer value n to indicate a multiplier value 10n	0

Additional output file keys (depending on the format):

Format	Key	Description	Valid values	Default
txt	encoding	Text encoding	Valid encoding name	ascii
	delim	Column delimiter	comma tab semicolon space	tab
	separator	Decimal separator	comma point	point
	e3separator	Thousand separator	comma point none	none
	header	Write header line to file	false true	true
	decimals	Number of decimals written to file	Integer value	3
	bom	Write byte order mark to file	false true	false
mtp	prec	Multiplier to be applied to the matrices	Integer value n to indicate a multiplier value 10n	0
omx	prec	Storage precision	float32 float64	float32
4g	prec	Storage precision	float16 float32 float64	float32
	compress	Compression method	none gzip	gzip