ManualOperator

3D Bathymetric database

User comments

[PARAMETERS]

HeightUnit = METERS // (meters by default

ImportLevel = 9 // scale data import (1/10000 by default)

249

MaxSea Operator Manual version 12.6

[COORDINATE SYSTEM]

Group = LAT-LONG

System = LAT-LONG

Datum = WGS84 or ED50

Unit = METERS

The complete list unit:

MILLIMETERS, CENTIMETERS, DECIMETERS, METERS, KILOMETERS, INCHES, USINCHES, TENTHFEET, TENTHUSFEET, FEET, USFEET, CLARKE FEET, LINKS, BENOIT LINKS, SEARS LINKS, GUNTER LINKS, CLARKE CHAINS, BENOIT CHAINS, SEARS CHAINS, GUNTER CHAIN, YARDS, SEARS YARD, INDIAN YARD, NAUTICAL MILES, U.S. SURVEY MILES, INTERNATIONAL MILES, RODS, PERCH, POLE.

[DATA]

Separated the data to be imported by a space …

Import ASCII (*.xyz) files

To import data from "ASCII(*.xyz)" you have to:

•Choose "ASCII"

•Click on "Add files" button, the following file appears.

250

3D Bathymetric database

Note:

1.To add several user data files in same way click on "Add files" again.

2.To delete a selected file in the window, first select the displayed file and click on Clear selection button

3.At last click "OK" to start the import

Before importing data to 3D database, the software suggests you to adjust some parameters (for more information refer you to chapter How to configure data import "from ASCII (*.xyz)" file)

Import Digital Elevation Model

Allows you to import data from bathymetric charts such as:

World-wide data (provided with the 2D module),

Mapmedia data (SHOM, IFREMER).

To import data from "3D charts" you have to:

•Select D.E.M. box (Digital Elevation Model)

•Click Add files button to select a 3d data file

•An "Open file" dialog box appears that allows you to select the file you want to import in your database.

251

MaxSea Operator Manual version 12.6

•Click "Open" after you have selected a file

•The file path appears in the following window

Notes:

1 - To add several user data files, click on "Add files" again.

2 - To delete a selected file in the window, first select the file and click on Clear selection

3 - Click "OK" to start the import

IMPORTANT

252

3D Bathymetric database

•Before importing data to the 3D database, you are given the option to set some parameters, but you must click the Import button. Adjusting these parameters has no effect on the importing D.E.M. data.

•It is possible to cancel the import if it takes too much time by clicking on the "STOP" button. Note that it will stop it at that point and not cancel the entire import.

Import Vector Chart's Data

First open the vector chart, by selecting [Open chart…] from [File ] menu

Select a scale of the front window from 1:1000000 to 1:500, zoom on the region you want to import. MaxSea will import depth from ALL charts included inside the window, at ALL scales from the window scale up to scale

1:500.

Then select [Import to 3D database] from the [File] menu

The following dialog box appears: select the type of data you wish to import :

•Check the Vector chart box

•Then Click on Ok.

You have to define some parameters before importing data. (See "how to configure data import from C-Map CD")

Start the 3D data import

Once you have chosen the data to be imported and adjusted the parameters (if necessary) you can start the import.

253

MaxSea Operator Manual version 12.6

• To preview before importing data, click on the Test button.

• If you need configure the import, see "How to configure data import".

• Start the import by clicking on

Import

Start "User data" files

Note: the Test function is available for C-Map Chart and (ASCII / PTF) files.

If you have already imported a file, a warning appears and informs that this file might be already imported.

o Click on the Import button to confirm

or

o Click on Do not import to escape.

A dialog informs you about the time remaining for the import.

When the import is finished the following dialog box gives you the number and type of points imported into the database.

254

3D Bathymetric database

BE CAREFUL: this operation can take a long time.

Configure imported data

How to configure Data Import

•The Import Data window interface will change according to the type of imported data.

1- Parameters Tabs are available according to the chosen import of data (Area, Range, Offset, Boat, Tide, Filter). 2- Test button: when you have done a change you can test the result before importing your data.

3- Undo button: to cancel the test.

4- Import button: to launch the import data

5- Cancel button: to quit

255

MaxSea Operator Manual version 12.6

Note: in most cases you don’t have to change the parameters.

When you choose the data to be imported:

•If the imported parameters need to be adjusted you can preview directly the result by selecting the Test button. Select Undo to erase the configuration if it’s wrong.

•Then select the Import button to add directly data in the database.

How to configure an Area Data Import

By default World box is checked (all depth data will be imported)

The Geographic rectangle checked allows you to define the geographic zone for which you want to import data. This function is available for C –Map chart, ASCII file and user data and not available for Mapmedia 3D data chart and world data.

•Before selecting a zone check the Geographic rectangle radio button.

•Define a zone on the chart using the Arrow tool, the data coordinate will be automatically updated.

Note: By default the geographic zone corresponds to the window displayed at the time of the data import.

How to configure a Range Data Import

256

3D Bathymetric database

You can choose the range according to the depth data import.

How to configure the Offset Data Import

This function allows you to apply a constant or proportional data difference.

257

MaxSea Operator Manual version 12.6

How to configure the Boat Data Import

This function allows you to choose an immersion value for your Echo Sounder head in case it is not self compensated. It is also important to correct the x,y horizontal offset.

Sounder position

GPS position

How to configure the Tide Data Import

Allows you 3 possibilities of tide display:

No tide

When the tide tables on the zone are not precise.

Automatic station selection

MaxSea adjusts data with the nearest reference harbor.

258