mirror of https://github.com/ecmwf/eccodes.git
128 lines
4.4 KiB
Modula-2
128 lines
4.4 KiB
Modula-2
# Predefined grid 21
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#position offsetSection2;
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#transient section2Length=0 ;
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template predefined_grid_values "grib1/grid_[gridDefinition].def";
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# NV -- number of vertical coordinate parameters
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constant numberOfVerticalCoordinateValues=0 ;
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constant neitherPresent = 255;
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alias NV = numberOfVerticalCoordinateValues;
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alias numberOfCoordinatesValues= numberOfVerticalCoordinateValues;
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# PV -- location
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# (octet number)
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constant pvlLocation = 255;
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# Data representation type
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constant dataRepresentationType = 0;
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# Grid definition
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# (according to data representation type - octet 6 above)
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# grib 1 -> 2
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constant gridDefinitionTemplateNumber = 0;
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# START 1/grid_definition.latitude_longitude_grid ----------------------------------------------------------------------
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# GRID DEFINITION latitude/longitude grid (or equidistant cylindrical)
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alias numberOfPointsAlongAParallel=Ni;
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alias numberOfPointsAlongAMeridian=Nj;
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# Latitudes and Longitudes of the first and the last points
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# Resolution and component flags
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# La1 - latitude of first grid point
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meta geography.latitudeOfFirstGridPointInDegrees scale(latitudeOfFirstGridPoint,oneConstant,grib1divider,truncateDegrees) : read_only;
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alias La1 = latitudeOfFirstGridPoint;
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# Lo1 - longitude of first grid point
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meta geography.longitudeOfFirstGridPointInDegrees scale(longitudeOfFirstGridPoint,oneConstant,grib1divider,truncateDegrees) : read_only;
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alias Lo1 = longitudeOfFirstGridPoint;
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# Resolution and component flags
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constant resolutionAndComponentFlags = 128;
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# Not flagbit numbers 7 to 0, while wmo is 1 to 8
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constant ijDirectionIncrementGiven = 1 ;
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# For grib 1 to 2
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alias iDirectionIncrementGiven = ijDirectionIncrementGiven;
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alias jDirectionIncrementGiven = ijDirectionIncrementGiven;
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alias DiGiven = ijDirectionIncrementGiven;
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alias DjGiven = ijDirectionIncrementGiven;
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constant earthIsOblate = 0;
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constant resolutionAndComponentFlags3 = 0;
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constant resolutionAndComponentFlags4 = 0;
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constant uvRelativeToGrid = 0;
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constant resolutionAndComponentFlags6 = 0;
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constant resolutionAndComponentFlags7 = 0;
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constant resolutionAndComponentFlags8 = 0;
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# La2 - latitude of last grid point
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meta geography.latitudeOfLastGridPointInDegrees scale(latitudeOfLastGridPoint,oneConstant,grib1divider,truncateDegrees) : read_only;
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alias La2 = latitudeOfLastGridPoint;
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# Lo2 - longitude of last grid point
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meta geography.longitudeOfLastGridPointInDegrees scale(longitudeOfLastGridPoint,oneConstant,grib1divider,truncateDegrees) : read_only;
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alias Lo2 = longitudeOfLastGridPoint;
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alias Dj = jDirectionIncrement;
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alias Di = iDirectionIncrement;
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# Scanning mode
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constant scanningMode = 64;
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# Not flagbit numbers 7 to 0, while wmo is 1 to 8
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constant iScansNegatively = 0 ;
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constant jScansPositively = 1 ;
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constant jPointsAreConsecutive = 0;
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constant iScansPositively = 1;
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constant scanningMode4 = 0;
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constant scanningMode5 = 0;
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constant scanningMode6 = 0;
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constant scanningMode7 = 0;
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constant scanningMode8 = 0;
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meta geography.jDirectionIncrementInDegrees latlon_increment(ijDirectionIncrementGiven,jDirectionIncrement,
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jScansPositively,
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latitudeOfFirstGridPointInDegrees,latitudeOfLastGridPointInDegrees,
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numberOfPointsAlongAMeridian,oneConstant,grib1divider,0) : read_only;
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meta geography.iDirectionIncrementInDegrees latlon_increment(ijDirectionIncrementGiven,iDirectionIncrement,
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iScansPositively,
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longitudeOfFirstGridPointInDegrees,longitudeOfLastGridPointInDegrees,
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Ni,oneConstant,grib1divider,1) : read_only;
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alias latitudeFirstInDegrees = latitudeOfFirstGridPointInDegrees;
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alias longitudeFirstInDegrees = longitudeOfFirstGridPointInDegrees;
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alias latitudeLastInDegrees = latitudeOfLastGridPointInDegrees;
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alias longitudeLastInDegrees = longitudeOfLastGridPointInDegrees;
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alias DiInDegrees = iDirectionIncrementInDegrees;
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alias DjInDegrees = jDirectionIncrementInDegrees;
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alias numberOfPoints=numberOfDataPoints;
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#alias ls.valuesCount=numberOfValues;
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# END 1/grid_definition.latitude_longitude_grid
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constant PVPresent = 0;
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constant PLPresent = 0;
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constant reducedGrid =0;
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# we always include the bitmap keys if a GDS is not present
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constant numberOfUnusedBitsAtEndOfSection3 = 0;
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# Table reference:
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constant tableReference = 0;
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#position offsetBeforeBitmap;
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meta bitmap gds_not_present_bitmap( missingValue,numberOfValues,
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numberOfPoints,
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latitudeOfFirstGridPoint,
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Ni,numberOfUnusedBitsAtEndOfSection3) : read_only;
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