SemAlmanacReadFrom Method (TextReader, Int32)

Reads a SEM almanac from the specified reader.

Namespace: AGI.Foundation.Navigation.DataReaders
Assembly: AGI.Foundation.Navigation (in AGI.Foundation.Navigation.dll) Version: 25.2.423.0 (25.2.423.0)

Syntax

C++

Copy

public static SemAlmanac ReadFrom(
	TextReader reader,
	int rolloverCount
)

Public Shared Function ReadFrom ( 
	reader As TextReader,
	rolloverCount As Integer
) As SemAlmanac

public:
static SemAlmanac^ ReadFrom(
	TextReader^ reader, 
	int rolloverCount
)

static member ReadFrom : 
        reader : TextReader * 
        rolloverCount : int -> SemAlmanac

Parameters

reader: Type: System.IOTextReader
The reader from which to read the almanac.
rolloverCount: Type: SystemInt32
The number of times the GPS week counter had rolled over when this almanac was created. See below for more information.

Return Value

Type: SemAlmanac
The almanac read from the stream.

Exceptions

Exception	Condition
ArgumentNullException	Thrown when reader is .
InvalidDataException	Thrown when the SEM almanac data has an invalid format.

Remarks

The following list represents the rollover dates for the GPS week parameter. On or after the date listed below, you will need to use the specified rollover count.

Date	Rollover Count
January 6, 1980	0
August 22, 1999	1
April 7, 2019	2
November 21, 2038	3
July 7, 2058	4

To compute the rollover count for a given date, construct a GlobalPositioningSystemDate and use the value of RolloverCount.

Reference

SemAlmanac Class

ReadFrom Overload

AGI.Foundation.Navigation.DataReaders Namespace

SemAlmanacAddLanguageSpecificTextSet("LST95ECFF25_0?cpp=::|nu=.");ReadFrom Method (TextReader, Int32)

Parameters

Return Value

Reference

SemAlmanacReadFrom Method (TextReader, Int32)