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Elevation

Elevation

Measures the vertical distances and the shape of the Earth and its features in relation to a reference surface (datum)

Contour 1 Metre LiDAR

A linear feature class captured using LiDAR technology and representing an imaginary line on the ground with a regular 1 metre elevation in relation to the Australian Height Datum over selected areas across the state of Queensland.

Contour 1 Metre LiDAR

A linear feature class captured using LiDAR technology and representing an imaginary line on the ground with a regular 1 metre elevation in relation to the Australian Height Datum over selected areas across the state of Queensland.

Column Name

Nulls

Format

Size

Description

Constraints

FEATURE_TYPE

No

Text

50

 

Unique feature type that identifies the type of topographic feature. Options:

  • Index Contour

  • Intermediate Contour

 

dm_contour_ LiDAR

ATTRIBUTE_SOURCE

No

Text

100

 

The source LiDAR capture project used to define what the feature type is.

 

 

ATTRIBUTE_DATE

No

Date

 

Date of the source LiDAR capture project used for attributing the feature.

 

FEATURE_SOURCE

No

Text

100

The source LiDAR capture project that the spatial location of the feature was obtained from.

 

FEATURE_DATE

No

Date

 

 

Date of the source LiDAR capture project that the location of the feature was obtained from.

 

 

ELEVATION_M

Yes

Double

 

 

The elevation of the feature measured in metres in relation to the Australian Height Datum

 

 

ELEVATION_SOURCE

Yes

Text

100

The source LiDAR capture project that the elevation of the feature was obtained from

 

ELEVATION_DATE

Yes

Date

 

 

Date of the source LiDAR capture project that the elevation of the feature was obtained from.

 

 

ELEV_ACCURACY_M

No

Double

 

The vertical positional accuracy of the contour measured in metres (plus or minus e.g., +/- 0.3m)

 

CREATED_DATE*

No

Date

 

The date the feature was originally captured and first loaded to the database

*internal use only

 

LAST_EDTED_DATE*

No

Date

 

Date of the last editing or revision to the feature

*internal use only

 

UPPER_SCALE

No

Long

 

The upper scale for which the feature should be considered suitable for digital display

dm_upper_scale_ LiDAR

TEXT_NOTE

Yes

Text

50

 

For mapping purposes. Additional annotation that can be shown on a map.

 

 

ADD_INFORMATION

Yes

Text

255

A comment field (additional information)

 

  • Intermediate Contour – An imaginary line on the ground joining points of equal elevation above the Australian Height Datum, showing increasing and decreasing elevation values at 1 metre intervals.

  • Index Contour – Being every fifth “Intermediate Contour” - classified as Feature Type “Index Contour”. The elevation values are divisible by 5.

Upper_scale:

  • 1:10 000 – all Intermediate Contours

  • 1:25 000 – all Index Contours

 

INTERMEDIATE CONTOUR

 

Definition: An imaginary line on the ground joining points of equal elevation above the Australian Height Datum, showing increasing and decreasing elevation values at 1 metre intervals.

 

Alternate Terms: Basic Contour

 

 

  • Capture as a 2D polyline

  • Capture with a contour interval of 1 metre

  • Auto-generate from a digital terrain model captured using LiDAR technology.

 

 

INDEX CONTOUR

 

Definition: Being every fifth “Intermediate Contour” - classified as Feature Type “Index Contour”. The elevation values are divisible by 5.

 

Alternate Terms: Major Contour

 

 

  • Capture as a 2D polyline

  • Capture with a contour interval of 1 metre

  • Auto-generate from a digital terrain model captured using LiDAR technology.

  • Being every fifth “Intermediate Contour” - classified as Feature Type “Index Contour”. The elevation values are divisible by 5.

 

Contour 5 Metre LiDAR

A linear feature class captured using LiDAR technology and representing an imaginary line on the ground of equal 5 metre elevation in relation to the Australian Height Datum over selected areas across the state of Queensland.

Contour 5 Metre LiDAR

A linear feature class captured using LiDAR technology and representing an imaginary line on the ground of equal 5 metre elevation in relation to the Australian Height Datum over selected areas across the state of Queensland.

Column Name

Nulls

Format

Size

Description

Constraints

FEATURE_TYPE

No

Text

50

 

Unique feature type that identifies the type of topographic feature. Options:

  • Index Contour

  • Intermediate Contour

 

dm_contour_ LiDAR

ATTRIBUTE_SOURCE

No

Text

100

 

The source LiDAR capture project used to define what the feature type is.

 

 

ATTRIBUTE_DATE

No

Date

 

Date of the source LiDAR capture project used for attributing the feature.

 

FEATURE_SOURCE

No

Text

100

The source LiDAR capture project that the spatial location of the feature was obtained from.

 

FEATURE_DATE

No

Date

 

 

Date of the source LiDAR capture project that the location of the feature was obtained from.

 

 

ELEVATION_M

Yes

Double

 

 

The elevation of the feature measured in metres in relation to the Australian Height Datum

 

 

ELEVATION_SOURCE

Yes

Text

100

The source LiDAR capture project that the elevation of the feature was obtained from

 

ELEVATION_DATE

Yes

Date

 

 

Date of the source LiDAR capture project that the elevation of the feature was obtained from.

 

 

ELEV_ACCURACY_M

No

Double

 

The vertical positional accuracy of the contour measured in metres (plus or minus e.g., +/- 0.3m)

 

CREATED_DATE*

No

Date

 

The date the feature was originally captured and first loaded to the database

*internal use only

 

LAST_EDTED_DATE*

No

Date

 

Date of the last editing or revision to the feature

*internal use only

 

UPPER_SCALE

No

Long

 

The upper scale for which the feature should be considered suitable for digital display

dm_upper_scale_ LiDAR

TEXT_NOTE

Yes

Text

50

 

For mapping purposes. Additional annotation that can be shown on a map.

 

 

ADD_INFORMATION

Yes

Text

255

A comment field (additional information)

 

Contour 5 Metre Photogrammetry

A linear feature class captured using photogrammetric techniques and representing an imaginary line on the ground jo with a regular 5 metre elevation in relation to the Australian Height Datum over selected areas across the state of Queensland.

 Historic dataset and not actively updated.

Contour 10 Metre

A linear feature class, representing an imaginary line on the ground joining points with a regular 10 metre elevation in relation to the Australian Height Datum across the State of Queensland.

 

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