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If many types of DEM's are active OziExplorer selects the DEM to use in this order.

USA Dem 24K

USA Dem 250

Grid ASCII

NIMA DTED

5. Gtopo30

Globe (Arcview)

Example

if a USA Dem 24K and Gtopo30 data exist and are set as active, the USA Dem 24K data

will always be used.

Within each type of DEM type the file with the best horizontal resolution of data points is used

If you have a large number of dem files it may become too slow to scan them all, it is therefore

suggested you divide them into regions and set the paths to point to a region of interest.

Some dem types are indexed and this produces an extra file called .ozline. If the .ozline file does not

exist it is created the first time the dem is scanned. The creation of the .ozline file can take a few

minutes but only has to be done once. The .ozline files can be deleted at any time, if required they

will be created the next time the dem is scanned.

Use Elevation Data

is active and elevation data is available and you are using waypoints or tracks

for any purpose, such as Track Profile, sending to OziExplorer3D and so on, then if the data does not

include elevations then they are automatically used from the DEM files as required.

When a 3D map is being created OziExplorer divides the map into a grid using the specified grid

spacing, it then obtains an elevation for each of the grid points (using interpolation with filtering if

specified). The height data is written to the .3d1 file together with any other information required by

OziExplorer3D, the file is then passed to OziExplorer3D for display.

OziExplorer

3D -

Limitations of Evaluation Version

Limitations of the OziExplorer3D Evaluation Version

Nag screen pops up whenever a new map is loaded

Limit of 1 window open at a time (purchased version has no limit (system limitations apply))

Limit of 100,000 vertices

Lighting and Fog parameters cannot be adjusted

OziExplorer Shareware/Demo and Trial Versions

This only lists those limitations which apply to creating 3D maps, other limitations may also apply.

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Brunton Multi-Navigator Spezifikationen Seite 251