Limitations, Warning and Error Messages

Equipment

Equipment : Import/Export DGN : Limitations, Warning and Error Messages

Limitations, Warning and Error Messages

Geometry Mapping

The MicroStation dgn data file that is produced by the Export-DGN contains a series of geometry definition records. The following table shows how MODEL primitives are mapped to dgn record types.


MODEL	dgn File
Cylinder	Truncated Cone
Snout	Truncated Cone
Cone	Truncated Cone
Slope bottomed cylinder	Capped Surface
Sphere	Capped Surface
Dish	Capped Surface
Box	Capped Surface
Circular Torus	Capped Surface
Rectangular Torus	Capped Surface
Pyramid	Capped Surface
Polyhedron	Cell containing a number of Shape elements
Structural Rectangle	Capped Surface or a Cell containing a number of Shape elements
Structural Annulus	Capped Surface or a Cell containing a number of Shape elements
Extrusion	Capped Surface

If the user requests that holes to be output, then Export-DGN generates a solid object bounded by a number of facets. The facets with no holes are translated as Shapes and the facets with holes are translated as Cells containing no-hole Shapes and hole Shapes.

The following limitations affect the transfer of information from MODEL to MicroStation.

1.

The interface translates 3D geometric elements only. Attribute data may be written to an attribute file.

2.

The BOUN and DRAW elements and 3D lines are not translated.

3.

Element names are not translated but may be written to the attribute file.

4.

Attributes are not translated but may be written to the attribute file.

5.

The database hierarchy is not translated and any catalogue components are copied for every instance. Some geometry elements may not have the correct graphic group setting.

6.

Wide character sets (such as Kanji) are not supported.

7.

Under some circumstances User Defined Attributes of type WORD may not be output correctly.

The section provides details of the error messages that can be output when running Export-DGN. A more detailed error message may often be found in the log file.

The following message is output by MODEL if there is a problem with locating or loading the Export-DGN Export Driver.

Unable to open dynamic library ...

The following error messages may be output during translation from MODEL to MicroStation.

library does not accept this hardware

iogini has not been called

file does not exist

there is no ISFF file open

cannot close the file

end of file found

insufficient space provided

2D request on 3D file

3D request on 2D file

type does not exist

type is invalid for query routine

invalid level in type 9

invalid dimension

error reading IDGS file

invalid exponent in double

group not applicable to type

attributes not applicable

Can not open seed file

Can not open ISFF file

Invalid export option:

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