[OSM-dev] [Geowanking] DWG and DWF CAD files .. any opensource readers/converters

[Mikel Maron]

Thanks for the advice everyone.

With a DXF in hand, I broke down and installed lx-Viewer on a windows drive. 
That was able to export to PNG, which I uploaded to the MapWarper and warped with GCP against Landsat. I used the WMS generated from that in JOSM, and I know have a georeferenced image for tracing into OpenStreetMap.

http://wrp.geothings.net/mapscans/warped/90


I tried OpenJump with the DXF plugin, but encountered a bug .. in the file or the plugin I don't know.
java.lang.IllegalArgumentException: Number of points must be 0 or >3


Also with CAD2Shape, another windows tool, was able to get some Shapefiles exported.




A lot of places in the world use CAD for making maps. I'm not sure these are always georeferenced at all. Converting this into something usable for OpenStreetMap isn't straightforward, but something myself and a couple others are looking at.

-Mikel



----- Original Message ----
From: Landon Blake <lblake at ksninc.com>
To: geowanking at lists.burri.to
Sent: Friday, August 8, 2008 6:28:24 PM
Subject: Re: [Geowanking] DWG and DWF CAD files .. any opensource readers/converters

OpenJUMP currently has a plug-in that will read DXF files, if that will
do the trick.

SLB

-----Original Message-----
From: geowanking-bounces at lists.burri.to
[mailto:geowanking-bounces at lists.burri.to] On Behalf Of Jody Garnett
Sent: Thursday, August 07, 2008 4:06 PM
To: geowanking at lists.burri.to
Subject: Re: [Geowanking] DWG and DWF CAD files .. any opensource
readers/converters

There was one support for that in Jump; a user ported to code to uDig 
(but since it was GPL we did not end up distrubuting it). I would ask 
the OpenJump project to see if they know what happened to it...

Jody
> Hi
>
> I'm working with CAD files from the city of al Mafrak, Jordan. We're 
> looking at bringing their existing municipal data into OpenStreetMap.
>
> Found Lx-Viewer [http://lx-viewer.sourceforge.net/] which looks like 
> just the thing. Only sticking point is that compiling Lx-Viewer 
> requires libraries from the "Open"DWG alliance 
> [http://www.opendwg.org/]. Access to those libraries requires a $250 
> membership fee.
>
> Any other options or suggestions for an NGO working in a small city in

> Jordan?
>
> Thanks
> Mikel
>
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