WriterCreateSchema Method

public static Schema CreateSchema(
	IEnumerable<ChannelMetadata> metadata,
	string stationName,
	string deviceID,
	Ticks dataStartTime,
	long sampleCount,
	int version = 1999,
	FileType fileType = FileType.Binary,
	double timeFactor = 1,
	double samplingRate = 30,
	double nominalFrequency = 60,
	bool includeFracSecDefinition = true
)

Public Shared Function CreateSchema ( 
	metadata As IEnumerable(Of ChannelMetadata),
	stationName As String,
	deviceID As String,
	dataStartTime As Ticks,
	sampleCount As Long,
	Optional version As Integer = 1999,
	Optional fileType As FileType = FileType.Binary,
	Optional timeFactor As Double = 1,
	Optional samplingRate As Double = 30,
	Optional nominalFrequency As Double = 60,
	Optional includeFracSecDefinition As Boolean = true
) As Schema

public:
static Schema^ CreateSchema(
	IEnumerable<ChannelMetadata>^ metadata, 
	String^ stationName, 
	String^ deviceID, 
	Ticks dataStartTime, 
	long long sampleCount, 
	int version = 1999, 
	FileType fileType = FileType::Binary, 
	double timeFactor = 1, 
	double samplingRate = 30, 
	double nominalFrequency = 60, 
	bool includeFracSecDefinition = true
)

Gemstone.COMTRADE.Writer.CreateSchema = function(metadata, stationName, deviceID, dataStartTime, sampleCount, version, fileType, timeFactor, samplingRate, nominalFrequency, includeFracSecDefinition);

Parameters

metadata  IEnumerableChannelMetadata

Schema ChannelMetadata records.

stationName  String

Station name for the schema.

deviceID  String

Device ID for the schema.

dataStartTime  Ticks

Data start time.

sampleCount  Int64

Total data samples (i.e., total number of rows).

version  Int32  (Optional)

Target schema version - defaults to 1999.

fileType  FileType  (Optional)

Determines the data file type for the schema.

timeFactor  Double  (Optional)

Time factor to use in schema - defaults to 1000.

samplingRate  Double  (Optional)

Desired sampling rate - defaults to 33.3333Hz.

nominalFrequency  Double  (Optional)

Nominal frequency - defaults to 60Hz.

includeFracSecDefinition  Boolean  (Optional)

Determines if the FRACSEC word digital definitions should be included - defaults to true.

Return Value

This function is primarily intended to create a configuration based on synchrophasor data (see Annex H: Schema for Phasor Data 2150 Using the COMTRADE File Standard in IEEE C37.111-2010), it may be necessary to manually create a schema object for other COMTRADE needs. You can call the FileImage property to return a string that can be written to a file that will be the contents of the configuration file.

Linear scaling factors for analog channels, i.e., adders and multipliers, will be set to reasonable values based on the channel type. These should be adjusted as needed based on actual channel value ranges. Note that for Float32 the multiplier will be 1.0 and the adder will be 0.0 for all analog values.

Reference