[OSGeo-Discuss] Regarding The Microstation DGN Maps georeferencing [SEC=UNCLASSIFIED]

[Tyler Mitchell]

Sorry if it's been mentioned, but if you can run ogrinfo against the file and show the coordinate ranges to the mailing list - plus tell the general geographic region the data lands in, that might also help us figure it out for you.

Best wishes,
Tyler

----- Original Message -----
From: Bruce Bannerman <B.Bannerman at bom.gov.au>
Date: Sunday, November 15, 2009 6:25 pm
Subject: RE: [OSGeo-Discuss] Regarding The Microstation DGN Maps	georeferencing [SEC=UNCLASSIFIED]
To: 'OSGeo Discussions' <discuss at lists.osgeo.org>

> Padmini,
> 
> It has been a long, long time since I used MicroStation, however 
> this may help.
> 
> Typically it will depend on the people who captured the data 
> that you are working with:
> 
> - some are only concerned with the immediate vicinity of their 
>   engineering project and will arbitrarily define a local 
> (cartesian) 
>   grid with a datum point of (0,0) or similar and work with 
> these coordinates.
> 
> - others will be quite pedantic and work with projected coordinates
>   e.g. UTM coords within their design files.
> 
> 
> With the first example, you'll have to find the relationship 
> between the arbitrary datum and your Spatial Reference System 
> and transform the data.
> 
> With the second example, if you know the source SRS try just 
> applying it.
> 
> 
> 
> Now being good spatial professionals, your data providers will 
> have provided spatial metadata (at least ISO 19139) with their 
> spatial datasets, so you'll be able to easily work out the 
> lineage of the data sets that were provided to you and work out 
> the appropriate course of action.
> 
> 
> 
> HTH.
> 
> 
> Bruce 
> 
>  
> 
> > -----Original Message-----
> > From: discuss-bounces at lists.osgeo.org 
> > [mailto:discuss-bounces at lists.osgeo.org] On Behalf Of 
> > bpadmini at bel.co.in
> > Sent: Wednesday, 11 November 2009 4:43 PM
> > To: discuss at lists.osgeo.org
> > Subject: [OSGeo-Discuss] Regarding The Microstation DGN Maps 
> > georeferencing
> > 
> > hello,
> > 
> > I am newbie using Quantum GIS.
> > I am able to extract layers from DGN file, but couldn't 
> > geo-reference it.
> > are their any ways of doing so, please suggest.
> > 
> > thanks and regards,
> > Padmini
> > 
> > 
> > Confidentiality Notice
> > 
> > The information contained in this electronic message and any 
> > attachments to this message are intended for the exclusive 
> > use of the addressee(s) and may contain confidential or 
> > privileged information. If you are not the intended 
> > recipient, please notify the sender at Bharat 
> Electronics  or 
> > support at bel.co.in immediately and destroy all copies of this 
> > message and any attachments.
> > 
> > _______________________________________________
> > Discuss mailing list
> > Discuss at lists.osgeo.org
> > http://lists.osgeo.org/mailman/listinfo/discuss
> > _______________________________________________
> Discuss mailing list
> Discuss at lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/discuss
> 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/discuss/attachments/20091115/d5a74030/attachment-0002.html>