Elements of a GrADS Data Descriptor File

DSET
DTYPE
INDEX
TITLE
UNDEF
OPTIONS
XDEF
YDEF
ZDEF
TDEF
VARS
ENDVARS
FILEHEADER
THEADER
XYHEADER


DSET data_filename

DTYPE station | grib

INDEX filename

TITLE string

UNDEF value

OPTIONS keyword

XDEF xnum mapping <additional arguments>

YDEF ynum mapping <additional arguments>

ZDEF znum mapping <additional arguments>

TDEF tnum LINEAR start increment

VARS varnum
variable_record_1
variable_record_2
...
variable_record_varnum
ENDVARS

FILEHEADER length

THEADER length

XYHEADER length