The following group codes are used by GEODATA
objects. In addition to the group codes described here, see
Common Group Codes for Objects.
For information about abbreviations and formatting used in this
table, see
Formatting Conventions in This Reference.
GEODATA group codes
|
Group code
|
Description
|
90
|
AcDbGeoData Object
version 1 - 2009 2 - 2010
|
70
|
Type of design coordinates: 0
- Unknown
1 - Local grid 2 - Projected grid 3
- Geographic (latitude/longitude)
|
330
|
ObjectId of host block table record |
10,20,30
|
Design point, reference point in WCS
coordinates
|
11,21,31
|
Reference point in coordinate system
coordinates, valid only when coordinate type is Local Grid.
|
12,22
|
North direction vector (2D) |
| 40 |
Horizontal unit scale, factor which converts
horizontal design coordinates to meters by multiplication.
|
| 41 |
Vertical unit scale, factor which converts
vertical design coordinates to meters by multiplication.
|
| 91 |
Horizontal units per UnitsValue enumeration.
Will be kUnitsUndefined if units specified by horizontal unit scale
is not supported by AutoCAD enumeration.
|
| 92 |
Vertical units per UnitsValue enumeration.
Will be kUnitsUndefined if units specified by horizontal unit scale
is not supported by AutoCAD enumeration.
|
210,220,230
|
Up direction |
95
|
Scale estimation method: 1
- None
2 - User specified scale factor 3
- Grid scale at reference point
4 - Prismoidal
|
294
|
Bool flag
specifying whether to do sea level correction
|
141
|
User specified scale factor |
142
|
Sea level elevation |
143
|
Coordinate projection radius |
301
|
Coordinate system definition string |
302
|
GeoRSS
tag
|
| 305 |
Observation from tag |
| 306 |
Observation to tag |
307
|
Observation coverage tag |
| 93 |
Number of Geo-Mesh points |
13,23
|
Coordinate of source mesh point (repeat) |
14,24
|
Coordinate
of destination mesh point (repeat)
|
96
|
Number of faces |
97
|
Point index for face (repeat) |
98
|
Point index for face (repeat) |
99
|
Point index for face (repeat) |
