IOLink Namespace Reference

Classes
class	ArrayXd
class	ArrayXf
class	ArrayXi16
class	ArrayXi32
class	ArrayXi64
class	ArrayXi8
class	ArrayXu16
class	ArrayXu32
class	ArrayXu64
class	ArrayXu8
class	ColumnRenamingExtension
class	ColumnUnitExtension
class	ConstMetadataNodeIterator
	Class represents a const iterator on a list of Metadata nodes. More...
class	DataAccess
class	DataFrameCapabilitySet
class	DataFrameView
class	DataFrameViewExtension
class	DataFrameViewFactory
class	DataFrameViewProvider
class	DataStorage
	Describes a data source, that manages and opens DataAccess instances. More...
class	DataType
class	DependencyGraph
	Algorithms on the dependency graph. More...
class	Extension
class	ExtensionProvider
class	HTTPHeaders
	A class used to pass HTTP headers as input of factories methods. More...
class	ImageCapabilitySet
class	ImageInfoProperty
class	ImageProperties
	Hold additionnal info for ImageView data interpretation. More...
class	ImageSourceCapabilitySet
class	ImageType
class	ImageTypeId
class	ImageView
class	ImageViewExtension
	Extension class for ImageView. More...
class	ImageViewFactory
class	ImageViewProvider
	Utility class to check and convert a View into an ImagevView. More...
class	Indexer
class	IOLink
class	IOLinkPINVOKE
class	LodImageView
class	LodImageViewProvider
	Utility class for LodImageView support. More...
class	Logger
class	LookUpTable
	A look-up table. More...
class	LutExtension
	An extension that provides a look-up table. More...
class	Matrix3d
class	Matrix3f
class	Matrix4d
class	Matrix4f
class	MetadataNode
class	MetadataNodeFactory
	A factory to build MetadataNode instances. More...
class	MetadataNodeHelper
	A collection of functions to handle paths on MetadataNode instances. More...
class	MetadataNodeIterator
	Class represents an iterator on a list of Metadata nodes. More...
class	MultiImageCapabilitySet
class	MultiImageView
class	MultiImageViewExtension
	Extension class for MultiImageView. More...
class	MultiImageViewFactory
	This factory is aimed at creating stack of ImageViews. More...
class	MultiImageViewProvider
	Utility class to check and convert a View into a MultiImagevView. More...
class	NetStreamAccess
class	ParallelAccessExtension
class	RandomAccess
class	RandomAccessCapabilitySet
class	RandomAccessExtension
	Extension class for RandomAccess. More...
class	RandomAccessFactory
	A factory to create RandomAccess instances from various ressources. More...
class	RandomAccessProvider
	Utility class to check and convert a DataAccess into a RandomAccess. More...
class	ReadonlyImageInfoProperty
	Wrapper around ImageInfoProperty exposing only method that does not modify the instance. More...
class	ReadonlyImageProperties
	Wrapper around ImageProperties exposing only method that does not modify the instance. More...
class	ReadonlyMetadataNode
	Wrapper around MetadataNode exposing only method that does not modify the instance. More...
class	ReadonlySpatialCalibrationProperty
	Wrapper around SpatialCalibrationProperty exposing only method that does not modify the instance. More...
class	Region2u64
class	Region3u64
class	Region4u64
class	RegionXu64
	A Region using dynamic vectors. More...
class	Serialization
class	SpatialCalibrationProperty
class	SpatialDirections
class	StreamAccess
class	StreamAccessCapabilitySet
class	StreamAccessExtension
	Extension class for StreamAccess. More...
class	StreamAccessFactory
	A factory to create StreamAccess instances from various ressources. More...
class	StreamAccessProvider
	Utility class to check and convert a DataAccess into a StreamAccess. More...
class	StreamAdapter
class	SWIGTYPE_p_PrettyPrintOptions
class	SWIGTYPE_p_std__shared_ptrT_RandomAccess_t
class	SWIGTYPE_p_std__shared_ptrT_StreamAccess_t
class	TensorCapabilitySet
class	TensorView
	A model of a tensor. More...
class	TensorViewFactory
class	TensorViewProvider
class	TilingInfoExtension
class	TransformMatrix3Factory
	Create matrices for 2D transforms. More...
class	TransformMatrix4Factory
	Create matrices for 3D transforms. More...
class	UidGenerator
	A collection of fonctions and constant useful for managing unique identifiers. More...
class	Uri
	Class modeling universal resource identifier. More...
class	VariantDataValue
class	VariantDataValueConverter
	Converter contains a set of method allowing to interpret a VariantDataValue as a determined type. More...
class	VariantDataValueFactory
	A factory to create VariantDataValue instances from a great variety of types. More...
class	Vector2d
class	Vector2f
class	Vector2i16
class	Vector2i32
class	Vector2i64
class	Vector2i8
class	Vector2u16
class	Vector2u32
class	Vector2u64
class	Vector2u8
class	Vector3d
class	Vector3f
class	Vector3i16
class	Vector3i32
class	Vector3i64
class	Vector3i8
class	Vector3u16
class	Vector3u32
class	Vector3u64
class	Vector3u8
class	Vector4d
class	Vector4f
class	Vector4i16
class	Vector4i32
class	Vector4i64
class	Vector4i8
class	Vector4u16
class	Vector4u32
class	Vector4u64
class	Vector4u8
class	VectorXd
	A dynamically sized arithmetic vector. More...
class	VectorXf
	A dynamically sized arithmetic vector. More...
class	VectorXi16
	A dynamically sized arithmetic vector. More...
class	VectorXi32
	A dynamically sized arithmetic vector. More...
class	VectorXi64
	A dynamically sized arithmetic vector. More...
class	VectorXi8
	A dynamically sized arithmetic vector. More...
class	VectorXu16
	A dynamically sized arithmetic vector. More...
class	VectorXu32
	A dynamically sized arithmetic vector. More...
class	VectorXu64
	A dynamically sized arithmetic vector. More...
class	VectorXu8
	A dynamically sized arithmetic vector. More...
class	VersionInfo
	Simple structure to hold version info. More...
class	Versioning
	Versioning tool to check library infos. More...
class	View
	Interface representing a generic view on data. More...
class	ViewOriginExtension
class	ViewTools
	Class which provides tools to manipulate views. More...
class	Writer
	Interface to use in order to output a view to another medium. More...

Enumerations
enum	AccessCapabilities { READ_ONLY = 1 , WRITE_ONLY = 2 , READ_WRITE = 3 }
	Used to request capabilities for accessors.
enum	CommonAncestorStatus { SHARE_NO_ANCESTOR , SHARE_ANCESTOR , UNDETERMINED }
	Status of the research of a common ancestor. More...
enum	DataFrameCapability { READ = 1 , WRITE = 2 , RESHAPE = 4 }
enum	DataTypeId : ulong {   UNKNOWN = 0 , UINT8 = 65800 , UINT16 = 65808 , UINT32 = 65824 ,   UINT64 = 65856 , INT8 = 131336 , INT16 = 131344 , INT32 = 131360 ,   INT64 = 131392 , FLOAT = 196896 , DOUBLE = 196928 , UTF8_STRING = 262408 ,   UTF16_STRING = 262416 , UTF32_STRING = 262432 , VEC2_UINT8 = 66056 , VEC2_UINT16 = 66064 ,   VEC2_UINT32 = 66080 , VEC2_UINT64 = 66112 , VEC2_INT8 = 131592 , VEC2_INT16 = 131600 ,   VEC2_INT32 = 131616 , VEC2_INT64 = 131648 , VEC2_FLOAT = 197152 , VEC2_DOUBLE = 197184 ,   VEC3_UINT8 = 66312 , VEC3_UINT16 = 66320 , VEC3_UINT32 = 66336 , VEC3_UINT64 = 66368 ,   VEC3_INT8 = 131848 , VEC3_INT16 = 131856 , VEC3_INT32 = 131872 , VEC3_INT64 = 131904 ,   VEC3_FLOAT = 197408 , VEC3_DOUBLE = 197440 , VEC4_UINT8 = 66568 , VEC4_UINT16 = 66576 ,   VEC4_UINT32 = 66592 , VEC4_UINT64 = 66624 , VEC4_INT8 = 132104 , VEC4_INT16 = 132112 ,   VEC4_INT32 = 132128 , VEC4_INT64 = 132160 , VEC4_FLOAT = 197664 , VEC4_DOUBLE = 197696 ,   COMPLEX_FLOAT = 4295164448 , COMPLEX_DOUBLE = 4295164480 , MATRIX2_FLOAT = 8590132256 , MATRIX2_DOUBLE = 8590132288 ,   MATRIX3_FLOAT = 8590133536 , MATRIX3_DOUBLE = 8590133568 , MATRIX4_FLOAT = 8590135328 , MATRIX4_DOUBLE = 8590135360 ,   SYM_MATRIX2_FLOAT = 12885099296 , SYM_MATRIX2_DOUBLE = 12885099328 , SYM_MATRIX3_FLOAT = 12885100064 , SYM_MATRIX3_DOUBLE = 12885100096 }
	A collection of built-in data types. More...
enum	DataTypeInterpretation : uint { RAW = 0 , COMPLEX , SQUARE_MATRIX , SYMMETRIC_MATRIX }
	An enumeration to describe how the data should be interpreted. More...
enum	ImageCapability {   READ = 1 , WRITE = 2 , RESHAPE = 4 , MEMORY_ACCESS = 8 ,   READ_WRITE = 3 }
	Define capabilities of an ImageView. More...
enum	ImageDimension {   COLUMN = 0 , ROW = 1 , SLICE = 2 , CHANNEL = 3 ,   SEQUENCE = 4 }
	Enum used in ImageType to represent each dimension of an Image. More...
enum	ImageInterpretation {   UNKNOWN = 0 , GRAYSCALE = 1 , LABEL = 2 , BINARY = 3 ,   CIE_XYZ = 17 , CIE_XYZ_CHROMATICITY = 18 , CIE_UVW = 20 , CIE_LUV = 21 ,   CIE_LAB = 22 , RGB = 33 , RGB_CHROMATICITY = 34 , SRGB = 35 ,   YUV = 49 , YCC = 50 , YIQ = 51 , YDD = 52 ,   HSL = 65 , HSV = 66 , CMYK = 81 , MULTISPECTRAL = 255 }
	Interpretation of an Image. More...
enum	LogLevel {   LOG_OFF , LOG_CRITICAL , LOG_ERR , LOG_WARNING ,   LOG_INFO , LOG_DEBUG , LOG_TRACE }
enum	MemoryLayout { UNKNOWN = 0 , C , FORTRAN }
enum	MultiImageCapability { READ = 1 , WRITE = 2 , READ_WRITE = 3 }
	Define capabilities of an MultiImageView. More...
enum	ParallelAccessCapability {   THREAD_SAFE = 1 , PARALLEL_TILE_READ = 2 , PARALLEL_TILE_WRITE = 4 , PARALLEL_READ = 8 ,   PARALLEL_WRITE = 16 }
	Define multi-access capabilities of an ImageView. More...
enum	PrimitiveTypeId : ushort {   UNKNOWN = 0 , UNSIGNED_INTEGER = 1 , SIGNED_INTEGER = 2 , FLOATING_POINT = 3 ,   UNICODE_STRING = 4 }
enum	RandomAccessCapability {   READ = 1 , WRITE = 2 , RESIZE = 4 , MEMORY_ACCESS = 8 ,   READ_WRITE = 3 , WRITE_RESIZE = 6 }
	Capabilities of a RandomAccess. More...
enum	SeekOrigin { BEGIN = 1 , CURRENT = 2 , END = 3 }
	Position indicator for seek method. More...
enum	StreamAccessCapability {   READ = 1 , WRITE = 2 , SEEK = 4 , MEMORY_ACCESS = 8 ,   READ_WRITE = 3 , READ_SEEK = 5 , WRITE_SEEK = 6 }
	Capabilities of a StreamAccess. More...
enum	TensorCapability {   READ = 1 , WRITE = 2 , MEMORY_ACCESS = 4 , RESHAPE = 8 ,   READ_WRITE = 3 }
enum	ViewDataOrigin {   UNKNOWN = 0 , CPU_MEMORY = 1 , DRIVE = 2 , GPU_MEMORY = 3 ,   NETWORK = 4 , GENERATED = 5 , COMPOSITE = 6 }
	Enum which represents the different locations where view data may come from. More...

Enumeration Type Documentation

CommonAncestorStatus

enum IOLink.CommonAncestorStatus

Status of the research of a common ancestor.

Enumerator
SHARE_NO_ANCESTOR	Views share no common ancestor at all.
SHARE_ANCESTOR	Views share at least one common ancestor.
UNDETERMINED	Information is not available, because the dependency tree is not complete.

DataFrameCapability

enum IOLink.DataFrameCapability

Capabilities of dataframes instances.

See also

DataFrameView

Enumerator
READ	Ability to read column data.
WRITE	Ability to write column data.
RESHAPE	Ability to add or remove columns and rows.

DataTypeId

enum IOLink.DataTypeId : ulong

A collection of built-in data types.

Enumerator
UNKNOWN	An opaque type.
UINT8	8 bits unsigned integer
UINT16	16 bits unsigned integer
UINT32	32 bits unsigned integer
UINT64	64 bits unsigned integer
INT8	8 bits signed integer
INT16	16 bits signed integer
INT32	32 bits signed integer
INT64	64 bits signed integer
FLOAT	Single precision floating point.
DOUBLE	Double precision floating point.
UTF8_STRING	Unicode string encoded in UTF-8.
UTF16_STRING	Unicode string encoded in UTF-16.
UTF32_STRING	Unicode string encoded in UTF-32.
VEC2_UINT8	A vector of 2 elements that are 8 bits unsigned integer.
VEC2_UINT16	A vector of 2 elements that are 16 bits unsigned integer.
VEC2_UINT32	A vector of 2 elements that are 32 bits unsigned integer.
VEC2_UINT64	A vector of 2 elements that are 64 bits unsigned integer.
VEC2_INT8	A vector of 2 elements that are 8 bits signed integer.
VEC2_INT16	A vector of 2 elements that are 16 bits signed integer.
VEC2_INT32	A vector of 2 elements that are 32 bits signed integer.
VEC2_INT64	A vector of 2 elements that are 64 bits signed integer.
VEC2_FLOAT	A vector of 2 elements that are single precision floating point.
VEC2_DOUBLE	A vector of 2 elements that are double precision floating point.
VEC3_UINT8	A vector of 2 elements that are 8 bits unsigned integer.
VEC3_UINT16	A vector of 3 elements that are 16 bits unsigned integer.
VEC3_UINT32	A vector of 3 elements that are 32 bits unsigned integer.
VEC3_UINT64	A vector of 3 elements that are 64 bits unsigned integer.
VEC3_INT8	A vector of 3 elements that are 8 bits signed integer.
VEC3_INT16	A vector of 3 elements that are 16 bits signed integer.
VEC3_INT32	A vector of 3 elements that are 32 bits signed integer.
VEC3_INT64	A vector of 3 elements that are 64 bits signed integer.
VEC3_FLOAT	A vector of 3 elements that are single precision floating point.
VEC3_DOUBLE	A vector of 3 elements that are double precision floating point.
VEC4_UINT8	A vector of 4 elements that are 8 bits unsigned integer.
VEC4_UINT16	A vector of 4 elements that are 16 bits unsigned integer.
VEC4_UINT32	A vector of 4 elements that are 32 bits unsigned integer.
VEC4_UINT64	A vector of 4 elements that are 64 bits unsigned integer.
VEC4_INT8	A vector of 4 elements that are 8 bits signed integer.
VEC4_INT16	A vector of 4 elements that are 16 bits signed integer.
VEC4_INT32	A vector of 4 elements that are 32 bits signed integer.
VEC4_INT64	A vector of 4 elements that are 64 bits signed integer.
VEC4_FLOAT	A vector of 4 elements that are single precision floating point.
VEC4_DOUBLE	A vector of 4 elements that are double precision floating point.
COMPLEX_FLOAT	A single precision floating point complex number.
COMPLEX_DOUBLE	A double precision floating point complex number.
MATRIX2_FLOAT	A single precision floating point 2x2 Matrix.
MATRIX2_DOUBLE	A double precision floating point 2x2 Matrix.
MATRIX3_FLOAT	A single precision floating point 3x3 Matrix.
MATRIX3_DOUBLE	A double precision floating point 3x3 Matrix.
MATRIX4_FLOAT	A single precision floating point 4x4 Matrix.
MATRIX4_DOUBLE	A double precision floating point 4x4 Matrix.
SYM_MATRIX2_FLOAT	A single precision floating point 2x2 symmetric Matrix.
SYM_MATRIX2_DOUBLE	A double precision floating point 2x2 symmetric Matrix.
SYM_MATRIX3_FLOAT	A single precision floating point 3x3 symmetric Matrix.
SYM_MATRIX3_DOUBLE	A double precision floating point 3x3 symmetric Matrix.

DataTypeInterpretation

enum IOLink.DataTypeInterpretation : uint

An enumeration to describe how the data should be interpreted.

Enumerator
RAW	No particular interpretation, classic vectors and scalars.
COMPLEX	A complex number. A DataType intance with this interpretation should always have a dimension of 2. The first element will be the real part and the second one the imaginary part.
SQUARE_MATRIX	A square matrix. The dimension of DataType instances with this interpretation is the number of element in that matrix. For example, in the case of a square matrix of size 3, its dimension will be 9. Example of layout: | 0 | 1 | 2 | | 3 | 4 | 5 | | 6 | 7 | 8 |
SYMMETRIC_MATRIX	A symmetric matrix The dimension of DataType instances with this interpretation is the number of element in that matrix. For example, in the case of a symmetric matrix of size 3, its dimension will be 6. Example of layout: | 0 | 1 | 2 | | | 3 | 4 | | | | 5 |

ImageCapability

enum IOLink.ImageCapability

Define capabilities of an ImageView.

Enumerator
READ	Data and metadata read capability.
WRITE	Data, metadata, and properties write capability.
RESHAPE	Reshaping capabilities.
MEMORY_ACCESS	Accessing internal CPU memory buffer.
READ_WRITE	Combines READ and WRITE.

ImageDimension

enum IOLink.ImageDimension

Enum used in ImageType to represent each dimension of an Image.

Enumerator
COLUMN	represents a image width
ROW	represents a image height
SLICE	represents depth for a volumetric image
CHANNEL	represents channel planes of a multi-spectral image
SEQUENCE	represents the temporality for a sequence of images

ImageInterpretation

enum IOLink.ImageInterpretation

Interpretation of an Image.

Enumerator
UNKNOWN	No interpretation at all, only raw data.
GRAYSCALE	A shade of grey, from black to white.
LABEL	Indices corresponding to a label.
BINARY	A boolean.
CIE_XYZ	CIE XYZ color space (CIE 1931)
CIE_XYZ_CHROMATICITY	CIE XYZ color with chromaticity coordinates.
CIE_UVW	CIE U*V*W* color space (CIE 1964)
CIE_LUV	CIE L*u*v* color space (CIE 1976)
CIE_LAB	CIE L*a*b* color space (CIE 1976)
RGB	RGB color (CIE 1931)
RGB_CHROMATICITY	RGB color with chromaticity coordinates.
SRGB	Standard RGB color.
YUV	YUV color.
YCC	YCbCr color (PAL) Alias: YPbPr
YIQ	YIQ color (NTSC)
YDD	YDbDr color (SECAM & PAL-N)
HSL	HSL color (Hue, Saturation, Lightness) Aliases: HLS, HSI
HSV	HSV color (Hue, Saturation, Value) Alias: HSB
CMYK	CMYK color (Cyan, Magenta, Yellow, blacK)
MULTISPECTRAL	Multiple layers of spectral data.

LogLevel

enum IOLink.LogLevel

The level of logs to display. When a level is activated, all levels above will be displayed too. Example: activating WARNING level will display CRITICAL, ERROR, and WARNING logs.

Enumerator
LOG_OFF	No logging at all.
LOG_CRITICAL	Severe errors that cause premature termination.
LOG_ERR	Runtime errors or unexpected conditions.
LOG_WARNING	Use of deprecated APIs, poor use of API, 'almost' errors, other runtime situations that are undesirable or unexpected, but not necessarily "wrong".
LOG_INFO	Interesting runtime events (startup/shutdown).
LOG_DEBUG	Detailed information on the flow through the system.
LOG_TRACE	Only for "tracing" the code and trying to find one part of a function specifically

MemoryLayout

enum IOLink.MemoryLayout

This enum indicates how a multidimensionnal array is stored in continuous memory.

Enumerator
UNKNOWN	Unknown layout.
C	In the C layout the first dimension will have the bigger stride. It is often called row major. The dimensions' indices are in reverse order when accessing memory in that layout: array[j][i] | 11 | 12 | 13 | | 21 | 22 | 23 | Would be stored as such: {11, 21, 12, 22, 13, 23}
FORTRAN	In the Fortran layout the first dimension will have the lesser stride. It is often called column major. The dimensions' indices are in normal order when accessing memory in that layout: array[i][j] | 11 | 12 | 13 | | 21 | 22 | 23 | Would be stored as such: {11, 12, 13, 21, 22, 23}

MultiImageCapability

enum IOLink.MultiImageCapability

Define capabilities of an MultiImageView.

Enumerator
READ	frames access
WRITE	frames addition and modification
READ_WRITE	Combines READ and WRITE.

ParallelAccessCapability

enum IOLink.ParallelAccessCapability

Define multi-access capabilities of an ImageView.

Enumerator
THREAD_SAFE	Image can be multi-accessed (READ and/or WRITE) without any race condition, but with no control on thread execution order. Are concerned the following methods: read readRegion write writeRegion readTile writeTile
PARALLEL_TILE_READ	Hints that reading tiles in parallel will provide performance benefits. But remember that parallel calls on the same tile will not provide benefits, and can cause race conditions if there is no THREAD_SAFE capability. Is concerned the following method: readTile
PARALLEL_TILE_WRITE	Hints that writing tiles in parallel will provide performance benefits, But remember that parallel calls on the same tile will not provide benefits, and can cause race conditions if there is no THREAD_SAFE capability. Is concerned the following method: writeTile
PARALLEL_READ	Hints that regions of the image can be read in parallel with performance benefits. But parallel access to overlapping regions in parallel will not provide the optimum performance, and even race conditions if there is no THREAD_SAFE capability. Is concerned the following method: readRegion
PARALLEL_WRITE	Hints that regions of the image can be written in parallel with performance benefits. But parallel access to overlapping regions in parallel will not provide the optimum performance, and even race conditions if there is no THREAD_SAFE capability. Is concerned the following method: writeRegion

PrimitiveTypeId

enum IOLink.PrimitiveTypeId : ushort

Enum to describe the primitive family of a data type. Some examples:

• UINT16, UINT32, and VEC3_UINT8 are all USIGNED_INTEGER
• FLOAT and DOUBLE are FLOATING_POINT
• UTF8_STRING and UTF16_STRING are UNICODE_STRING

Enumerator
UNKNOWN	An opaque type, that the no one knows about.
UNSIGNED_INTEGER	A classic integer number.
SIGNED_INTEGER	An integer number, using the two complement for negative numbers.
FLOATING_POINT	A floating point number, encoded according to IEEE 754.
UNICODE_STRING	A text string, using the Unicode coding system.

RandomAccessCapability

enum IOLink.RandomAccessCapability

Capabilities of a RandomAccess.

Enumerator
READ	Data can be read.
WRITE	Data can be written.
RESIZE	Data can be resized.
MEMORY_ACCESS	Accessing internal CPU memory buffer.
READ_WRITE	combination of READ and WRITE
WRITE_RESIZE	combination of WRITE and RESIZE

SeekOrigin

enum IOLink.SeekOrigin

Position indicator for seek method.

Enumerator
BEGIN	Begining of the stream.
CURRENT	Current position of the stream.
END	End of the stream.

StreamAccessCapability

enum IOLink.StreamAccessCapability

Capabilities of a StreamAccess.

Enumerator
READ	Data can be read.
WRITE	Data can be written.
SEEK	Cursor for read/write can be moved.
MEMORY_ACCESS	Accessing internal CPU memory buffer.
READ_WRITE	combination of READ and WRITE
READ_SEEK	combination of READ and SEEK
WRITE_SEEK	combination of WRITE and SEEK

TensorCapability

enum IOLink.TensorCapability

Enumerator
READ	the tensor's data can be read
WRITE	the tensor's data can be edited
MEMORY_ACCESS	the tensor's underlying memory can be accessed directly
RESHAPE	the tensor's shape can be changed updated

ViewDataOrigin

enum IOLink.ViewDataOrigin

Enum which represents the different locations where view data may come from.

Enumerator
UNKNOWN	The origin of data cannot be determined.
CPU_MEMORY	Data is located in CPU memory.
DRIVE	Data is located on a drive (HDD, SSD, CD, etc.).
GPU_MEMORY	Data is located in GPU memory.
NETWORK	Data are retrieved through the network.
GENERATED	Data is generated and never stored.
COMPOSITE	Data come from many sources.