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AutoCAD DXF files created by FME seem to be larger than those produced by other software packages.
The difference in size is caused by FME's default method of writing 3D polylines.
AutoCAD has 2D and 3D polylines which store their vertices as entities,and light-weight polylines which store vertices as coordinates only.
If the data is 3D with a constant z (elevation),other applications like Microstation export this as a light-weight polyline (a 2D object) with an elevation.However,FME writes all 3D lines as 3D polylines by default.
In FME you can specify which specific AutoCAD entity type to write usingautocad_original_entity_type.If you know that a line is planar,you can setautocad_entity_typetoautocad_line,andautocad_original_entity_typetoautocad_lwpolylineto create a light-weight polyline.
FME documentation contains alist of the AutoCAD entity types.
Working with Top10NL and AutoCAD
Viewing and Inspecting AutoCAD DWG Data: Grouping Entities
Basic DWG Block Handling Example: Preserving Block Entities (DWG to SHP)
Reading and Writing AutoCAD Text & MText Features
Give Your DWG Some Style: Using the DWGStyler,template files,blocks and more
Reading Basic Geodatabase Annotation - GDB to DWG
Converting CAD Datasets to IMDF: Part 1
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