IBM Visualization Data Explorer User's Reference

Export

Category

Import and Export

Function

Writes an external data file.

Syntax

Export(object, name, format);

Inputs

Name	Type	Default	Description
object	object	none	object to write
name	string	none	file name to write to
format	string	"dx"	format in which to write the file

Functional Details

The Export module writes object to the file name in the specified format.

You can specify format as dx, array, or vrml.

If format = dx, this specification can be followed by one or more of the following modifiers:

byteorder	Can be "msb" or "lsb" for most significant byte first or least significant byte first, respectively.
dxformat	Can be "ieee," or "text" for IEEE floating point or ASCII format, respectively. You can also specify "ascii" as a synonym for "text", and "binary" as a synonym for "ieee".
where	Can be one of the following three keywords: "follows" The data for each object follows the header for that object. "1" The data for each object is contained in a separate data section in the file. "2" The data for each object is contained in a separate file. For "follows" and "1," the module writes a single file with the file name (name.dx). For "2," the module writes files. The object headers are written to name.dx; the data are written to name.bin (binary data) or name.data (text data). For more information, see Appendix B. "Importing Data: File Formats" in IBM Visualization Data Explorer User's Guide.

If format = "array," this specification can be followed by one or both of the following modifiers:

quotes	Puts quotation marks around string data.
headers	Puts a header of descriptive information at the top of the file.

The data are written out in ASCII spreadsheet format (in columns). Only position-dependent data are supported. All position-dependent data are written to the output file. The first column will contain the positions themselves.

If object contains a group of fields, these are written out one after the other.

If format = "vrml", or the extension of the filename is .wrl, then a VRML 2.0 format file will be written. Because VRML files are written out in ASCII they can be very large, so you should reduce the number of polygons before exporting if possible, for example by using SimplifySurface. The object exported must be a field or group with two- or three-dimensional positions. Data Explorer objects are exported using VRML geometry nodes IndexFaceSet, IndexLineSet, PointSet, or ElevationGrid depending on the connections element type and regularity of positions. Colors and normals are exported with each object, if they exist.

Example Visual Program

UsingSwitchAndRoute.net

SimplifySurface.net

See Also

 Import,  SimplifySurface

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