Product Name: Geodetic Horizontal Control (points) (LGATE-076)
Description:
Contains horizontal and vertical coordinates and
selected attributes of Standard Survey Marks
(SSM) and Bench Marks (BM).
Date Last Reviewed:
19 May 2014
Last Reviewed By:
Landgate Data Management Group
th
Field Name
Field
Type
Description
Associated
Attribute
Values
Y/N
1. 1
OGC_FID
Integer
Feature Identifier Number
N
2. 2
THE_GEOM
Geometry
Ref
3. 3 POINT_NUMBER
Integer
GEODETIC_POINT_
4. 4
NAME
LATEST_STATUS_
5. 5
DESCRIPTION
CADASTRAL_CONN
6. 6
ECTION
Variable
Character
Variable
Character
Variable
Character
7. 7
LATITUDE
Double
Precision
8. 8
LONGITUDE
Double
Precision
9. 9
PROJECTION
Variable
Character
10. 1
0
EASTING
Double
Precision
11. 1
1
NORTHING
Double
Precision
A system-generated ID created upon
loading the SDE layer into PostGIS.
Is a system generated consecutive
number that uniquely identifies a point
This is the primary name of the point
This is a description of the latest
physical status of the point.
Whether or not a cadastral connection to
the point exists or not.
Latitude is defined as the angle formed
by the intersection of a line
perpendicular to the Earth’s surface at a
point and the plane of the Equator.
Points north of the Equator have positive
latitude values, while points south have
negative values. Latitude values range
from -90 to +90 degrees. In this case the
value is expressed in decimal degrees.
A meridian, or line of longitude, is
formed by a plane that passes through
the point and the North and South poles.
The longitude value is defined by the
angle between that plane and a
reference plane. The reference plane is
known as the prime meridian. The most
common prime meridian passes through
Greenwich, United Kingdom. Longitude
values range from -180 (west of the
meridian) to +180 (east of the meridian)
degrees. In this case the value is
expressed in decimal degrees.
The projection used to compute the
rectangular coordinates.
A Universal Transverse Mercator (UTM)
rectangular coordinate recorded in
meters. The origin of each UTM zone is
the central meridian. The value given to
the central meridian is a false easting of
500,000
A UTM rectangular coordinate recorded
in meters. The origin of each UTM zone
Product Name: SLIP Data Dictionary Geodetic Horizontal Control(points) v1.0.docx
N
N
N
N
N
N
N
N
N
N
Page 1 of 3
Ref
12. 1
2
Field Name
ZONE
Field
Type
Integer
13. 1
HORIZ_DATUM
3
14. 1
HORIZ_METHOD
4
15. 1
HORIZ_ACCURACY
5
Variable
character
Variable
character
Variable
character
16. 1
REDUCED_LEVEL
6
Double
Precision
17. 1
VERT_DATUM
7
18. 1
VERT_ACCURACY
8
Variable
Character
Variable
Character
19. 1
9
URL
20. 2
RENDER_VALUE
0
Variable
Character
Variable
Character
Description
is the equator. The value given to the
equator is a false northing of
10,000,000.
A Map Zone relates to the Universal
Transverse Mercator Grid. For the
Universal Transverse Mercator System,
the globe is divided into 60 zones, each
spanning six degrees of longitude. Each
zone has its own central meridian from
which it spans 3 degrees west and 3
degrees east. The origin of each zone is
the equator and its central meridian.
The datum used to compute the
horizontal coordinates.
The method used to obtain the
horizontal coordinates.
This is the horizontal accuracy of the
point.
Is the height of a point expressed as a
vertical displacement in metres from
Mean Sea Level (MSL).
The datum used to compute the reduced
level (height) of the point.
This is the vertical accuracy of the point.
This is the root path under which the
image files in their sub-directories are
located. The GOLA Data Manager
program that transfers new image files
uses this path to position the files on the
server. The GOLA web server uses the
Web Server Alias "StationSummaries" to
hold the root path. These two paths
must match.
Is a concatenated character string which
contains components, based on the
point type and method of survey of the
point, as required for drawing the point's
colour and symbol type in a normalview.
The point type determines the symbol
and the method of survey determines
the colour. The point name is displayed
as a label with each point (see
GEODETIC_POINT_NAME column.
There are four types of GESMAR points:
SSM, RM, BM and TCM. Each is
rendered as follows:
SSM: An SSM is to be rendered as a
triangle which is filled if it has an
ellipsoidal height (E). The colour of the
triangle is determined by the method of
survey for the AHD height of the SSM.
This can be Spirit Level (S), GPS (G),
Vertical Angles (V), Other (O), Unknown
(U) or Destroyed (D).The render values
Product Name: SLIP Data Dictionary Geodetic Horizontal Control(points) v1.0.docx
Associated
Attribute
Values
Y/N
N
N
N
N
N
N
N
N
N
Page 2 of 3
Ref
Field Name
Field
Type
Description
Associated
Attribute
Values
Y/N
will be SS, SSE, SG, SGE, SH, SHE,
SO, SOE, SU, SUE, SD or SDE.
RM: All RM's are symbolised as a
cross. The cross is black unless the RM
is destroyed, in which case it is red.
The render values will be RU and RD.
BM: A BM is to be rendered as a filled
square. The colour of the square is
determined by the method of survey of
the BM. This can be Spirit Level (S),
GPS (G), Vertical Angles (V), Other (O),
Unknown (U) or Destroyed (D).The
render values will be BS, BG, BH, BO,
BU or BD.
TCM: A TCM is to be rendered as a
diamond which is filled if it has an
ellipsoidal height (E). The colour of the
diamond is determined by the method of
survey for the AHD height of the TCM.
This can be Spirit Level (S), GPS (G),
Vertical Angles (V), Other (O), Unknown
(U) or Destroyed (D).The render values
will be TS, TSE, TG, TGE, TH, THE, TO,
TOE, TU, TUE, TD or TDE..
Is a numeric field that corresponds to
the RENDER_VALUE.
21.
FILTER_VALUE
HORIZ_POINT_ORD
ER
VERT_POINT_ORD
23.
ER
22.
Integer
Variable
Character
Variable
Character
SSM(Standard Survey Mark)=1
RM(Reference Mark)=2
BM(Bench Mark)=3
TCM=4
This is the description of the point order
of the horizontal coordinates.
This is the description of the point order
of the Reduced Level.
Product Name: SLIP Data Dictionary Geodetic Horizontal Control(points) v1.0.docx
N
N
N
Page 3 of 3