Dev:CommonDataTypes

This page is used to collect all data types used in the schemas. The target is to harmonize and re-use data types throughout the different schemas.

Simple Types

"Simple Types" are scalars based on integers or floating point numbers. The describe values like time, length or velocities. Vectors, lists (enumerations) or structures are not covered in this section!

Scalar's Name	Scalar's Unit	Encoding	Used in ...				Comment
			IS	IL	RS	TT
Position, distance, radius	km	float (0.3)	x				May occur as absolute or relative Position along the track, as abs. or rel. offset, as distance between two points, as radius or as superelevation
Latitude, Longitude, Altitude	?	float	x				Geographical position. The used coordinate system is still under discussion.
UIC-Number	(none)	integer	x				UIC-No. which belongs to a <<Owner>>.
Voltage	V	integer	x
Frequency	Hertz (1/s)	float	x
Gauge	mm	float (0.3)	x
Weight	kg	float	x
Axle Load ("meterload")	kg/m	float (0.3)	x				Is this correct?
Speed	km/h (?)	float	x				Or did we agree on [m/s] in the last meeting?
Angle	rad (has no unit)	float	x				Should we really use radian instead of grad (2 Pi = 360 Grad)?
Slope	Promille (has no unit) ?	float (6.2)	x				Is the unit correct? Or do we use "Percent"?
Country ID (for Balises)	(none)	integer	x
Group ID (for Balises)	(none)	integer	x
Point (Coordinates on a screen)	pixel	float	x				Used in the visualization part. Shouldn't the unit be integer?
Size (Screen size of an element)	pixel	float	x				Used in the visualization part. Shouldn't the unit be integer?
(name)	(unit)	(enc)					(comment)
(name)	(unit)	(enc)					(comment)

Attributes with arbitrary values

Currently there are a lot of "free parameters" (mostly strings), which are not strictly typed. In order to improve the interoperability between railML-capable applications, these only loosely typed variables should be defined more strictly.

The following table lists the variables which can currently be assigned with arbitrary values:

Attribute	Part of	Type	Used in ...				Comment
			IS	IL	RS	TT
ID	(various)	string	x				Occurs as infrastructureID, lineID, trackID, elemID, ocpID
name	(various)	string	x				Occurs in almost all elements as optional identifier / classifier
Owner Name	OwnerType	string	x
modeLegislative	operationModeType	string	x
modeExecutive	operationModeType	string	x
style	powerTransmissionType	string	x
model	switchType, crossingType	string	x				Model of the switch or crossing. Meaning?
system	trainProtectionElementType	string	x				Meaning? Examples?
model	trainProtectionElementType	string	x				Meaning? Examples?
trainCategory	speedType	string	x				Letter indicating the type of Train (e. g. "R")
status	speedType, speedChangeType	string	x				Meaning? Examples?
protection	levelCrossingType	string	x				Clearness detection of the LX (Radar, visual)? Or "selbstüberwacht" ("Überwachungssignal") vs. block protected ("HP")?
kind	bridgeType	string	x				Meaning? Examples?
sigSystem	signalType	string	x				Something like, Ks, H/V, ...
staticTelegram	baliseType, baliseGroupType	string	x				Coded? Uncoded? Binary? Plaintext?
model	trainDetectorType	string	x				Examples?
number	operationControlPointType, ocpAreaType	string	x				Meaning?
type	ocpPropOperationalType	string	x				Meaning?
(name)	(parent)	(type)	x				(comment)