ArcInfo Shape files` data structures(SHP.rfi):
Class: GIS files, Status: Complete, Last change: 05.11.2009 10:19:32
/* Information source:
==================================================
ArcView(R) Version 2 Shapefile Technical Description
An ESRI White Paper
==================================================
*/
set byteorder rev
type
longrev num-(4)
ulongrev num+(4)
set byteorder norm
type
//In fact - double
/*
xlong struc
ulong L
long H
ends: displ=(HEX(@.H),HEX(@.L))
*/
/*
type bit
TBit1 num+(1)
TBit11 num+(11)
TBit20 num+(20)
TDoubleHi struc
TBit20 M
TBit11 P
TBit1 S //Sign 1->Neg
ends
type
TDouble struc
ulong Lo
TDoubleHi Hi
ends: displ=(@.Hi.S,' 1.',@.Hi.M,@.Lo,'*2^',INT(@.Hi.P-0x3FF));
*/
include Float.rfi
type
TShapeType enum long (
Null=0,
Point=1,
PolyLine=3,
Polygon=5,
MultiPoint=8,
PointZ=11,
PolyLineZ=13,
PolygonZ=15,
MultiPointZ=18,
PointM=21,
PolyLineM=23,
PolygonM=25,
MultiPointM=28,
MultiPatch=31
)
TBBox struc
TDouble Xmin
TDouble Ymin
TDouble Xmax
TDouble Ymax
ends
TXPoint struc
TDouble X
TDouble Y
ends
TShpHeader struc
longrev Magic
longrev Rsrv0
longrev Rsrv1
longrev Rsrv2
longrev Rsrv3
longrev Rsrv4
longrev FileLength
long Ver
TShapeType ShapeType
TBBox BBox
TDouble Zmin
TDouble Zmax
TDouble Mmin
TDouble Mmax
ends:assert[@.Magic=9994,@.FileLength*2=FileSize,@.Ver=1000]
data
0 TShpHeader Hdr
assert Hdr:assert;
Other specifications.
FlexT home page,
Author`s home page.