[mapguide-users] shp or sdf advantages/disadvanatges

[Andy Morsell]

I have also found that for larger Shape files, converting to SDF at load
time results in much better performance.  For large parcel datasets, I also
generalize the data using FME.   Since SDF+ contains all of the attribute
information from the source Shape files DBF, you would probably want to just
use that for tooltips, etc. rather than linking to the DBF file.  FME from
Safe Software also will soon be including SDF+ support in their product.
The current beta version downloadable from their web site supports SDF+
 
 

Andy Morsell, P.E. 
Spatial Integrators, Inc. 
http://www.SpatialGIS.com 

 

  _____  

From: shailesh [mailto:shailesh at simplexindia.com] 
Sent: Wednesday, May 17, 2006 11:38 PM
To: users at mapguide.osgeo.org
Subject: [mapguide-users] shp or sdf advantages/disadvanatges


hi
I am currently using shp files for data resources and some of the data is
above 80 mb 
I think it makes the map very slow to load
does converting into sdf or another format help it load faster.
what are advantages /disadvantages .in terms of laoding speed,attribute
table data etc

can i use the convert to sdf option in studio or a there any other
specialized toosl for doing it.
if converted to sdf can i still use the dbf assoicated with shp for tooltips
and attribute data

-shailesh

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