How to Convert DWG file to KML file

Hi Everyone !

For the purpose of my mission during my internship, i must convert a DWG file to a KML file.

My boss told me using FME was the best choice.

I tried to convert the file with FME Quick Translatetor (following the FME Tutorial) using "Autodesk AutoCAD RealDWG DWG/DXF" for the DWG file in input and "Google KML" for the KML file in output.

It failed and return this error :

KML: Feature does not have a coordinate system specified

+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

Feature Type: `0'

Attribute(16 bit unsigned integer): `autocad_color' has value `7'

Attribute(64 bit real) : `autocad_elevation' has value `0'

Attribute(encoded: utf-16) : `autocad_linetype' has value `ByLayer'

Attribute(string) : `autocad_linetype_scale' has value `1'

Attribute(string) : `autocad_lineweight' has value `-1'

Attribute(64 bit real) : `autocad_thickness' has value `0'

Attribute(64 bit real) : `autocad_width' has value `0'

Attribute(encoded: utf-8) : `kml_id' has value `kml_2689'

Attribute(encoded: utf-8) : `kml_parent' has value `kml_ft_0'

Attribute(string) : `kml_type' has value `kml_area'

Coordinate System: `'

Geometry Type: IFMEPolygon

Boundary:

Geometry Type: IFMELine

Number of Coordinates: 5 -- Coordinate Dimension: 2

(1692982.6297503628,9246414.3255591113)(1693049.1543420772,9246414.3255591113)(1693049.1543420772,9246358.8121544663)(1692982.6297503628,9246358.8121544663)(1692982.6297503628,9246414.3255591113)

I also tried with FME Workbench with the same types used above. I create the Reader with my DWG file and my Writer with a KML file i used for testing. It create 2 entity (a reader and a writer) and i link them eachother and then I click on the "Run" button.

The translation also failed and return this error :

KML: Feature does not have a coordinate system specified

Storing feature(s) to FME feature store file `.\\mapping_log.ffs'

+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

Feature Type: `0'

Attribute(entangled: 16 bit unsigned integer): `autocad_color' has value `7'

entangled to [autocad_original_color, autocad_true_color]

Attribute(64 bit real) : `autocad_elevation' has value `0'

Attribute(string) : `autocad_entity' has value `autocad_polygon'

Attribute(string) : `autocad_entity_handle' has value `36FFFE'

Attribute(string) : `autocad_entity_visibility' has value `invisible'

Attribute(encoded: utf-16) : `autocad_layer' has value `0'

Attribute(encoded: utf-16) : `autocad_layer_desc' has value `'

Attribute(string) : `autocad_layer_frozen' has value `no'

Attribute(string) : `autocad_layer_hidden' has value `no'

Attribute(string) : `autocad_layer_locked' has value `no'

Attribute(string) : `autocad_layer_on' has value `yes'

Attribute(string) : `autocad_layer_plottable' has value `yes'

Attribute(encoded: utf-16) : `autocad_linetype' has value `ByLayer'

Attribute(32 bit unsigned integer) : `autocad_linetype_generation' has value `0'

Attribute(string) : `autocad_linetype_scale' has value `1'

Attribute(string) : `autocad_lineweight' has value `-1'

Attribute(string) : `autocad_original_color' has value `ByLayer'

Attribute(string) : `autocad_original_entity_type' has value `autocad_lwpolyline'

Attribute(encoded: utf-16) : `autocad_resolved_linetype' has value `Continuous'

Attribute(string) : `autocad_source_filename' has value `C:\\Users\\THE Rémi\\Downloads\\ROUVROY - Grille + n°.dwg'

Attribute(string) : `autocad_space' has value `model_space'

Attribute(boolean) : `autocad_store_bulges_mode' has value `No'

Attribute(64 bit real) : `autocad_thickness' has value `0'

Attribute(boolean) : `autocad_ucs_applied' has value `No'

Attribute(64 bit real) : `autocad_ucs_origin_x' has value `0'

Attribute(64 bit real) : `autocad_ucs_origin_y' has value `0'

Attribute(64 bit real) : `autocad_ucs_origin_z' has value `0'

Attribute(64 bit real) : `autocad_ucs_xdir_x' has value `1'

Attribute(64 bit real) : `autocad_ucs_xdir_y' has value `0'

Attribute(64 bit real) : `autocad_ucs_xdir_z' has value `0'

Attribute(64 bit real) : `autocad_ucs_ydir_x' has value `0'

Attribute(64 bit real) : `autocad_ucs_ydir_y' has value `1'

Attribute(64 bit real) : `autocad_ucs_ydir_z' has value `0'

Attribute(64 bit real) : `autocad_width' has value `0'

Attribute(entangled: string) : `fme_color' has value `0,0,0'

entangled to [autocad_color]

Attribute(string) : `fme_feature_type' has value `0'

Attribute(string) : `fme_geometry' has value `fme_polygon'

Attribute(entangled: string) : `fme_type' has value `fme_area'

entangled to [autocad_entity]

Attribute(encoded: utf-8) : `kml_id' has value `kml_2689'

Attribute(encoded: utf-8) : `kml_parent' has value `kml_ft_0'

Attribute(string) : `kml_type' has value `kml_area'

Attribute(string) : `multi_writer_id' has value `0'

Coordinate System: `'

Geometry Type: IFMEPolygon

Boundary:

Geometry Type: IFMELine

Number of Coordinates: 5 -- Coordinate Dimension: 2

(1692982.6297503628,9246414.3255591113)(1693049.1543420772,9246414.3255591113)(1693049.1543420772,9246358.8121544663)(1692982.6297503628,9246358.8121544663)(1692982.6297503628,9246414.3255591113)

To be clear, I call error the text wrote in red in FME Console/Translation Log during the translation.

I search what was wrong with the type and the value and found that some line like autocad_color attend a "number(31,15)" type and the value is "0". I asume that the type "number(31,15)" is a number between 15 and 31 but i'm not sure. It's an example but it's almost the same kind of disagreaments between the value and the type.

It's not very urgent but if someone have time to help me solve this i would be gratefull.

Thank you !!

PS: I'm a french student, if I was not clear about some points let me know about them.