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The upper part of the menu contains the project name and the name of the active folder of type Charts.

The Mode part

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Specify the type of contour data to export. The two modes are:

Contours
Contour Areas

 

The Chart Name part

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Select which charts to export data from.

 

Excerpt

The Contour settings part

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Contouring methods: 
Increment
Values
AML contours (Additional Military Layers)

Specify values according to the chosen method.

For Increment the options are:

Bold line everyWill 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 Values the options are:

Contour value (m): Enter a value to enter in the list belov. Note that the decimal sign is dependent on the language settings for your computer (dot or comma).

- The Append value button: Click this button to add the contour value to the list. The list will automatically be sorted.

- The Remove Selected button: Select one or more contour values in the list and the remove by clicking this button.

- The Remove All button: Clicking this button will remove all the values in the list.

For AML contours the options are:

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

1:50,0000 - 1005 m101 - 40010 m401+20 m
1:10,0000 - 101 m11 -1005 m101+10 m
1:250,0000 - 20010 m201 - 40020 m401+50 m
1:1,000,0000 - 50050 m501 - 3000100 m3001+500 m

See this document 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 Save to part:

The command can both create a dataset in the project tree and/or export the contours to a file on a disk on the computer.

  • File only: Will save to a disk disk file only, as specified in the Output file part.
  • File and project: Will save to both disk file (as above) and a projet item (as below).
  • Project only: Will save to a data item in the project only. The item will be saved in the same folder as the grid is located.

 


The Export Format part

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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

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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. 

 

The Results

After executing the command a dialog will pop up showing the result from the excution. The report itself is saved in the project structure in the folder named Reports located in the same folder as the actual surface. The report itself is named as YYYYMMDD HHMMSS Export Contours (the name of the executed command).

All reports from all runs will be saved in the same Reports folder.