[Mapguide_users] Import DWG fails

Tue Jan 9 11:14:55 EST 2007

 Yes, if you are defining a load procedure in Studio for a DWG and you are
instructing it to creature feature source data (under step 3 in the dialog)
then it is creating an SDF3 file for each incoming DWG component selected in
step 2.  This would include any object data and link template keys (but not
other external link data) as attributes in the SDF3 file.  If you tell
Studio in step 3 to create drawing source data, then it is creating a DWF
file for either each incoming component or will combine them all into one
DWF file (it's your choice).

If there aren't any feature classes defined in the DWG, then Studio tries to
build feature definitions from your selected components in step 2 which is
where DETE seems to have issues.  So, yes, if you create feature classes in
Map and then add them to a Display Manager Map in Map 3D, then only load
that particular display manager map during the load procedure, it works
well.  This would be the preferred workflow from a Map 3D/MapGuide
standpoint in that everyone starts to use feature classes.  But in reality,
this is not always an easy thing to do and takes quite a bit of time.
Particularly when you just want to load a DWG as SDF3 data so you have some
control in MapGuide over its style, etc.

Andy 

-----Original Message-----
From: mapguide_users-bounces at lists.osgeo.org
[mailto:mapguide_users-bounces at lists.osgeo.org] On Behalf Of BradM
Sent: Tuesday, January 09, 2007 7:54 AM
To: Mapguide_users at lists.osgeo.org
Subject: RE: [Mapguide_users] Import DWG fails

Andy, do you mean that Studio can convert DWG file format to SDF3? 

Also, are  you recommending for us to create feature class definitions for
the DWG files using autocad first ?

Andy Morsell wrote:
> 
> Brad,
> I do not believe that you will see another direct DWG data provider 
> from Autodesk in the near future.  The DWG provider for MapGuide 6.5 
> proved that this kind of direct read against a DWG is in most cases 
> simply too slow.
> I
> think Autodesk's current solution of using Studio to load the data 
> into feature or drawing sources is a good one.  The part that needs to 
> be worked on are tools to do this loading in a more automated, 
> consistent and scripted fashion so that we can easily keep the 
> MapGuide data in sync with the DWG's.
> 
> Regarding feature attributes, if you create feature class definitions 
> in your DWG files in Autodesk Map, these transfer very nicely into 
> MapGuide when you load the data as feature sources.  But, this does 
> mean if you just have object data or database links in your DWG's that 
> you will have to define feature classes that contain those data 
> definitions.
> 
> Andy
> 
> -----Original Message-----
> From: mapguide_users-bounces at lists.osgeo.org
> [mailto:mapguide_users-bounces at lists.osgeo.org] On Behalf Of BradM
> Sent: Monday, January 08, 2007 3:23 PM
> To: Mapguide_users at lists.osgeo.org
> Subject: RE: [Mapguide_users] Import DWG fails
> 
> 
> Andy and Jim: Many municipalities use Autocad and will want to connect 
> Mapguide to DWG files directly so there is no duplication.  Is there 
> any plan to rectify this problem?  Feature attributes are critical 
> such as property id, address etc.
> thanks
> 
> 
> 
> Andy Morsell wrote:
>> 
>> There seems to be some major, and known, issues with DETE.  The main 
>> problem I have run into is if you try to load a DWG while having it 
>> automatically creates feature classes on the fly.  This is where it 
>> will often consume all of your memory until it blows up.  One 
>> solution is to create feature definitions in the DWG prior, in which 
>> case it works very well, but this is not going to always be feasible.  
>> If you have it create drawing sources instead (DWF based layers), it 
>> works very well but then you lose the intelligence of having features 
>> and their related attribute data.
>> 
>> 
>> Andy Morsell, P.E.
>> Spatial Integrators, Inc.
>> http://www.SpatialGIS.com
>> 
>> -----Original Message-----
>> From: mapguide_users-bounces at lists.osgeo.org
>> [mailto:mapguide_users-bounces at lists.osgeo.org] On Behalf Of Jim 
>> O'Leary
>> Sent: Monday, January 08, 2007 2:51 PM
>> To: Mapguide_users at lists.osgeo.org
>> Subject: [Mapguide_users] Import DWG fails
>> 
>> 
>> The Autodesk MapGuide site at
>> http://usa.autodesk.com/adsk/servlet/item?siteID=123112&id=7176643
>> indicates
>> that you can import DWG files. However, when i try to do this with 
>> Studio I soon get the error:
>> 
>> Found when opening C:\Program
>> Files\MapGuideOpenSource\Server\cmn\squamish\cadastral.dwg ...
>> 
>> An error occured.
>> 
>> If I continue, the DETE.exe process eventually uses up all memory and 
>> I must reboot. I'm using MGOS 1.1.0, and am dragging the DWG file 
>> into Studio. I am reluctant to try the same with our MGE server, as 
>> it would likely bring it down.
>> 
>> Any suggestions?
>> 
>> --
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>> 
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> 
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