Type 5000

Type 5000 files contain record-oriented data structures. These more complex structures typically support operations dealing with motion in three-dimensional space, such as orbital state vectors and propagation of electromagnetic energy. In a Type 5000 file one data element is one record, but now the record contains up to 14 contiguous components. Each component is associated with a name and data format, but because they are contiguous no offset is needed. Instead, the component takes on a unit value and a type value, such as spherical, Cartesian, geodetic, etc. In addition, the Type 5000 header can contain quadwords defining the frame of reference for the file. The header of Type 5000 files contains:

• physical abscissa units
• physical abscissa starting value
• physical abscissa increment
• number of components
• bytes per record
• frame of reference and other pertinent quadwords
• component structure, including format, type, and units

Classes of Type 5000 Files

There are several special classes of Type 5000 files, each with a specific purpose. The class for each is determined by the names of the components in the file.

Class Name	Component Names (Type)	Example
Position	POS  (VD) NAME (1A)	cities.prm
Ellipse	POS  (VD) ELPS (VD) NAME (1A)	ellipse5000.prm
EllipseFlags	POS  (VD) ELPS (VD) NAME (1A) FLAG (8B)	ellipseflags5000.prm
Cone	POS  (VD) POSP (VD) CONE (VD) NAME (1A)	cone5000.prm
ConeFlags	POS  (VD) POSP (VD) CONE (VD) NAME (1A) FLAG (8B)	coneflags5000.prm

The complete set of supported fields are listed below. Note that ELPS and CONE are mutually exclusive. The NAME and POS fields are required, the other fields are typically optional (except in the case of the defined file types listed above).

Name	Format	Description
NAME	#A or #Z	Name of the point. (# is Data Mode)
NOTE	#A or #Z	Note to accompany point. (# is Data Mode)
POS	VD	Point position (ALT,LAT,LON).
POSP	VD	Secondary position for cone (ALT,LAT,LON).
ELPS	VD	Ellipse Parameters (semiMaj,semiMin,tilt).   semiMaj - the length of the semi-major axis in meters   semiMin - the length of the semi-minor axis in meters   tilt - the tilt of the ellipse (i.e. the orientation of the semi-major axis) in degrees where 0=North, 90=East, etc. Note: this should only have values in the range [0,180] since the ellipse is symmetric across the semi-minor axis
CONE	VD	Cone parameters (radius,angle,angle).
CONN	SB	Draw line to previous point (1=draw or 0=no draw).
HDG	SF	Cardinal heading to use for the symbol (0..360).
FLAG	8B	Draw flags:   FLAG[0] - Length of the name (in characters).   FLAG[1] - Name position. (Not Supported)   FLAG[2] - The color (by index).   FLAG[3] - Background color. (Not Supported)   FLAG[4] - Cone/Ellipse type (0=hidden, -9=visible).   FLAG[5] - Invert. (Not Supported)   FLAG[6] - X-Midas Symbol ID.   FLAG[7] - Symbol size.

Fields for Advanced Capabilities for Type 5000 Files

Newer capabilities for LayerT5 files have recently been added to NeXtMidas. An example of a LayerT5 instance using these capabilities is provided via the link at the bottom of this section. These new capabilities include:

Name	Format	Description
COLOR	#A or #Z	Allows users a wider range of colors compared to using the flags (see macro at the bottom for an example) (# is Data Mode) NOTE: This overrides the flags for setting the color.
ELLIPSOID	6D	Ellipsoids are drawn as a "wire cage" of ellipsoid slices. Slices are made down each axis, which form a set of ellipses. (see macro at the bottom for an example) (# is Data Mode) NOTE: Either ELLIPSOID or ELPSOID can be used.
METADATA	#A or #Z	Metadata info for each point as a String (usually formatted as a Table). (see macro at the bottom for an example) (# is Data Mode) NOTE: If the metadata provided can't be formatted into a Table, it will default to being a String. Alternate: METADATAFIELDS (see below)
METADATAFIELDS	#A or #Z	As an alternative to METADATA, LayerT5 supports metadata by providing the names of Type 5000 fields as a piped-separated list. These fields are eventually grouped together into a single Midas Table. (see macro at the bottom for an example) (# is Data Mode) NOTE: When METADATAFIELDS is provided, it applies to every point across the whole layer, and it takes precedence over METADATA.
SYMBOL	#A or #Z	Symbol or icon associated with point - Users can now provide the name of a NeXtMidas symbol or icon path for each point. (see macro at the bottom for an example) (# is Data Mode)
TIME	SD	Point time - Users can now specify the time directly for each point. (see macro at the bottom for an example) NOTE: This overrides having to set the start time and time delta as those values can be meaningless.

LayerT5 provides Advanced Capabilities for Type 5000 Files