Seis

This module contains classes related to handling of Seismic data. More...

Classes
class	SEGY::BinHeader
	400 byte SEG-Y binary header More...
class	Seis::Blocks::Block
	Base class for single block. More...
class	BlocksSeisTrcTranslator
class	Seis::Bounds
	contains domain-specific data boundary details. More...
class	Seis::Bounds2D
class	Seis::Bounds3D
class	CBVSSeisPS2DTranslator
class	CBVSSeisPS3DTranslator
class	CBVSSeisTrc2DTranslator
	CBVS translator for 2D Seismics. More...
class	CBVSSeisTrcTranslator
class	Seis::Blocks::Column
	Base class for column of blocks. More...
class	SeisTrcTranslator::ComponentData
	Information for one component. More...
class	SeisIOSimple::Data
class	Depth2TimeStretcher
class	Depth2TimeStretcherNew
class	dgbWaveletTranslator
class	Seis::Blocks::Dimensions
class	SEGY::DirectDef
class	SEGY::DirectReader
class	SEGY::FileDataSet
class	SEGY::FileIndexer
class	SEGY::FilePars
class	SEGY::FileReadOpts
class	SEGY::FileSpec
class	Seis::Blocks::GlobIdx
class	Seis::Blocks::HDimensions
class	SEGY::HdrCalc
class	SEGY::HdrCalcSet
class	SEGY::HdrDef
class	SEGY::HdrEntry
	describes one tape or trace header field, More...
class	Seis::Blocks::HGeom
class	Seis::Blocks::HGlobIdx
class	Seis::Blocks::HLocIdx
class	Seis::Blocks::IOClass
	Base class for Reader and Writer. For comments see master branch. More...
class	LinearD2TTransform
class	LinearD2TTransformNew
class	LinearT2DTransform
class	LinearT2DTransformNew
class	LinearVelTransform
class	LinearVelTransformNew
class	Seis::Blocks::LocIdx
class	MultiCubeSeisPS3DTranslator
class	MultiCubeSeisPSReader
	PS data store reader based on multiple 3D CBVS cubes. More...
class	Seis::MultiTraceSynthGenerator
class	Seis::ObjectSummary
class	Seis::ODSeqInp
	OpendTect-internal Seismic Sequential input. More...
class	Seis::ODSeqOut
	Seismic Sequential output via SeistrcWriter. More...
class	OffsetAzimuth
	Stores offset and azimuth as an int, wich makes it easy to compare them without having to think of epsilons when comparing. More...
class	SEGY::OffsetCalculator
class	Seis::ParallelReader
class	Seis::ParallelReader2D
class	Seis::PolySelData
	selection data by polygon or polyline. More...
class	Seis::PosIndexer
	builds an index of a list of positions, making it easy to find a specific position. More...
class	Seis::PosKey
class	Seis::PosKeyList
class	Seis::PreLoadDataEntry
class	Seis::PreLoadDataManager
class	Seis::PreLoader
class	RandomFlatDataPack
	FlatDataPack for random lines. More...
class	RandomSeisDataPack
	SeisDataPack for random lines. More...
class	Seis::RangeSelData
	selection data in simple ranges More...
class	Seis::RawTrcsSequence
	Buffer to a set of entire traces ( header + component data ) Can contain traces for several positions. More...
class	Seis::RawTrcsSequenceValueSeries
class	Seis::RaySynthGenerator
class	Seis::Blocks::Reader
	Reads data from Blocks Storage. For comments see master branch. More...
class	RegularFlatDataPack
	FlatDataPack for 2D and 3D seismic data. More...
class	RegularSeisDataPack
	SeisDataPack for 2D and 3D seismic data. More...
class	SEGY::ReSorter
	Re-sorts SEG-Y files, input must be 'scanned'. More...
class	SEGY::Scanner
	Scans SEG-Y file(s). For reports, you'd want to set rich info. More...
class	SEGYDirect2DLineGetter
class	SEGYDirect2DLineIOProvider
class	SEGYDirect2DLinePutter
class	SEGYDirect2DPSReader
	reads from 2D PS data store reader based on SEG-Y files More...
class	SEGYDirect3DPSReader
	reads from 3D PS data store reader based on SEG-Y files More...
class	SEGYDirectSeisPS2DTranslator
class	SEGYDirectSeisPS3DTranslator
class	SEGYDirectSeisTrc2DTranslator
	SEGYDirect translator for 2D Seismics. More...
class	SEGYDirectSeisTrcTranslator
class	SEGYDirectSurvGeom2DTranslator
class	SEGYSeisTrcTranslator
class	Seis2DCopier
	Copies line sets. More...
class	Seis2DDataSet
	Set of 2D lines comparable with 3D seismic cube. More...
class	Seis2DFrom3DExtractor
	Extracts 2D data from 3D Cube. More...
class	Seis2DLineGetter
	interface for object that reads 2D seismic data More...
class	Seis2DLineIOProvider
	Provides read/write to/from 2D seismic lines. Only interesting if you want to add your own 2D data I/O. More...
class	Seis2DLineMerger
	merges two 2D lines into a new one (same Line Set) More...
class	Seis2DLinePutter
	interface for object that writes 2D seismic data More...
class	Seis2DTo3D
class	Seis2DTo3DInterPol
class	Seis2DTo3DInterPolImpl
class	SeisBayesClass
	Bayesian inversion/classification for seismic data using PDFs. More...
class	SeisBufReader
class	SeisCBVS2DLineIOProvider
class	SeisCBVS2DLinePutter
class	SeisCBVSPS2DReader
	reads from a CBVS prestack seismic data store. More...
class	SeisCBVSPS2DWriter
	writes to a CBVS 2D prestack seismic data store. More...
class	SeisCBVSPS3DReader
	reads from a CBVS prestack seismic data store. More...
class	SeisCBVSPS3DWriter
	writes to a CBVS 3D prestack seismic data store. More...
class	SeisCBVSPSIO
	Implementation class: I/O from a CBVS prestack seismic data store. More...
class	SeisCubeCopier
	Copies cubes. The IOPar constructor wants an IOPar as you would pass to a SeisSingleTraceProc. More...
class	SeisDataPackFromDPS
	Class that creates a SeisDataPack from a DataPointSeti. Columns in DPS are represented by components in DP. More...
class	SeisDataPackWriter
class	SeisDataPackZAxisTransformer
	Uses ZAxisTransform to output a transformed SeisDataPack for the specified input SeisDataPack. More...
class	SeisEventSnapper
class	SeisEventSnapper3D
class	SeisFixedCubeProvider
class	SeisFlatDataPack
	Base class for RegularFlatDataPack and RandomFlatDataPack. More...
class	SeisImpBPSIF
	reads a BPSIF prestack data exchange file into a PS data store More...
class	SeisImpCBVSFromOtherSurvey
class	SeisImporter
	Helps import or export of seismic data. More...
class	SeisInterpol
class	SeisIOObjInfo
	Info on IOObj for seismics. More...
class	SeisIOSimple
class	SeisJobExecProv
	Provides job runners and postprocessor for seismic processing. More...
class	SeisMerger
	Merges 2D and 3D post-stack data. More...
class	SeisMSCProvider
	Reads seismic data into buffers providing a Moving Virtual Subcube of seismic data. More...
class	SeisPacketInfo
	Information for a packet of seismics, AKA tape header info. More...
class	Pos::SeisProvider3D
	3D provider based on cube of PS data store More...
class	SeisPS2DReader
	reads from a 2D prestack seismic data store. More...
class	SeisPS2DTranslator
class	SeisPS2DTranslatorGroup
class	SeisPS3DReader
	reads from a 3D prestack seismic data store. More...
class	SeisPS3DTranslator
class	SeisPS3DTranslatorGroup
	Translator mechanism is only used for selection etc. More...
class	SeisPSCopier
class	SeisPSCubeSeisTrcTranslator
class	SeisPSImpDataMgr
	Manages import of acquisition-sorted PS data. May take loads of memory. More...
class	SeisPSIOProvider
	Prestack Seismics objects provider. More...
class	SeisPSIOProviderFactory
class	SeisPSMerger
	Prestack seismic data merger. More...
class	SeisPSReader
	reads from a prestack seismic data store. More...
class	SeisPSWriter
	writes to a prestack seismic data store. More...
class	SeisRandLineTo2D
class	SeisRandLineTo2DGrid
class	SeisRandomProvider
class	SeisResampler
	will sub-sample in inl and crl, and re-sample in Z More...
class	SeisScaler
class	SeisScanner
class	SeisSequentialWriter
class	SeisSingleTraceProc
	Single trace processing executor. More...
class	SeisStdImporterReader
class	SeisStoreAccess
	base class for seis reader and writer. More...
class	SeisTrc
	Seismic trace. More...
class	SeisTrc2DTranslator
	Base translator for 2D Seismics. More...
class	SeisTrc2DTranslatorGroup
	TranslatorGroup for 2D Seismic Data. More...
class	SeisTrcBuf
	set of seismic traces. More...
class	SeisTrcBufArray2D
	Array2D based on SeisTrcBuf. More...
class	SeisTrcBufDataPack
	FlatDataPack based on SeisTrcBuf. More...
class	SeisTrcFunction
class	SeisTrcInfo
	Information for a seismic trace, AKA trace header info. More...
class	SeisTrcPropCalc
	calculates properties of a trace component More...
class	SeisTrcPropChg
	changes properties of one or all trace components. Component -1 (the default) changes all components. More...
class	SeisTrcReader
	reads from a seismic data store. More...
class	SeisTrcReaderSet
	advances and reads from multipe SeisTrcReader's More...
class	SeisTrcTranslator
	Seismic Trace translator. More...
class	SeisTrcValueSeries
class	SeisTrcWriter
class	SeisZAxisStretcher
class	SeisZAxisStretcherNew
class	Seis::SelData
	contains input (sub-)selection data from a cube or lineset More...
class	Seis::SelSetup
	setup for subselection of seismic data More...
class	Seis::SeqInp
	Base class for Seismic Sequential input classes. More...
class	Seis::SeqIO
	Base class for Seismic Sequential IO classes. More...
class	Seis::SeqOut
	Base class for Seismic Sequential output classes. More...
class	Seis::SequentialReader
class	SEGY::ReSorter::Setup
class	SeisStoreAccess::Setup
class	Seis::StatsCollector
class	Seis::SynthGenBase
class	Seis::SynthGenDataPack
class	Seis::SynthGenerator
class	Seis::SynthGeneratorBasic
class	Seis::TableSelData
	selection data in a table More...
class	SeisTrcTranslator::TargetComponentData
	ComponentData as it should be when the Translator puts it away. More...
class	Time2DepthStretcher
class	Time2DepthStretcherNew
class	SEGY::TrcHeader
class	SEGY::TrcHeaderDef
	stores HdrEntry info of the needed fields from the trace header. More...
class	TwoDDataSeisTrcTranslator
	Dummy old translator used during conversion only. More...
class	TwoDSeisTrcTranslator
	Translator mechanism is only used for selection etc. More...
class	SEGY::TxtHeader
	3200 byte SEG-Y text header. More...
class	VelocityModelScanner
class	VelocityModelScannerNew
class	VelocityStretcher
class	VelocityStretcherNew
class	Wavelet
class	WaveletAscIO
class	WaveletAttrib
class	WaveletExtractor
class	WaveletFunction
class	WaveletTranslator
class	WaveletTranslatorGroup
class	WaveletValueSeries

Detailed Description

This module contains classes related to handling of Seismic data.

Seismic data is sampled data along a vertical axis. Many 'traces' will usually occupy a volume (3D seismics) or separate lines (2D data).

There's always lots of data, so it has to be stored efficiently. A consequence is that storage on disk versus usage in memory are - contrary to most other data types - closely linked. Instead of just loading the data in one go, we always need to prepare a subcube of data before the work starts.

Although this model may have its flaws and may be outdated in the light of ever increasing computer memory, it will probably satisfy our needs for some time at the start of the 21st century.

The SeisTrc class is designed to be able to even have 1, 2 or 4-byte data in the data() - the access functions get() and set() will know how to unpack and pack this from/to float. SeisTrc objects can also hold more than one component.

To keep the SeisTrc object small, a lot of operations and processing options have been moved to specialised objects - see seistrcprop.h and seissingtrcproc.h .