In this section:
Introduction
This command is executed from a folder with schema type Charts and will export data items created and stored in the chart folders (with schema type Chart).
The command can contours of two types, Contours and Contour Areas, as specified in the menu. The command can export to different format types and to user specified disk locations.
The Export Contours Menu
The content of the menu
The upper part of the menu contains the project name and the name of the active folder of type Charts.
The Mode part:
Specify the type of contour data to export. The two modes are:
- Contours
- Contour Areas
The Chart Name part:
Select which charts to export data from.
The Contour settings part:
Contouring methods:
- Increment
- Values
- AML contours (Additional Military Layers)
Specify values according to the chosen method.
For Increment it is possible to define:
- Bold line every: Will be valid for the Dxf ASCII format only. Set the attribute Bathy_Major on (for instance) every 5th contour line and Bathy_Minor on the ordinary contours.
- Use min level: Define the shallowest contour level to create.
- Use max level: Define the deepest contour level to create.
For AML contours it is possible to define:
- Data compilation scale: Typical production scale for the AML. The contour lines are defined with different vertical increment for three dfined bands. The default values are for compilation scale 1:50,000.
Compilation scale | Contour range 1 (m) | Vertical Interval 1 | Contour range 2 (m) | Vertical Interval 2 | Contour range 3 (m) | Vertical Interval 3 |
|---|---|---|---|---|---|---|
| 1:50,000 | 0 - 100 | 5 m | 101 - 400 | 10 m | 401+ | 20 m |
| 1:10,000 | 0 - 10 | 1 m | 11 -100 | 5 m | 101+ | 10 m |
| 1:250,000 | 0 - 200 | 10 m | 201 - 400 | 20 m | 401+ | 50 m |
| 1:1,000,000 | 0 - 500 | 50 m | 501 - 3000 | 100 m | 3001+ | 500 m |
See this link for more information: https://www.ukho.gov.uk/Defence/AML/Documents/Item%2025%20%20AML_Production_Spec_1.pdf
Other options:
- Invert Z: Will multiply the Z values with -1.
- Lat/Lon: Will convert coordinates from projected coordinates to geographic coordinates. Will not be valid for all export formats.
The Export Format part:
Select which formats to export to. The selected format is individial for each mode.
Contour mode has the formats: VTK, Esri Shapefile Contours, ASCII Column, VTK ASCII, Dxf ASCII, KML
Contour Area mode has the formats: Esri Shapefile Contours, S-57
The Output File part:
Select where to do the export. The selected location is common for all export.
Filename: Shows the name which will be generated for the files.
If file already exists: The default method is to overwrite any existing files, but it is also possible to make a copy.