<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=UTF-8">
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
<HTML>
<HEAD>
<META NAME="Generator" CONTENT="MS Exchange Server version 6.0.6617.95">
<TITLE>Re: [mapguide-users] shp or sdf advantages/disadvanatges</TITLE>
</HEAD>
<BODY dir=ltr>
<DIV> </DIV>
<DIV>That depends on the data. I have seen it both ways (SDF bigger or SHP+DBF
bigger). Have in mind the SDF contains the equivalent of the SHP and the DBF
combined, and has a spatial index also (in the same file).</DIV>
<DIV>Most of the time SDF will perform better, especially for more complex
geometries or when you are fetching multiple attributes. You can use Studio to
do the conversion and experiment with SDF yourself. Yes, you can use the SDF for
tooltips and attribute data without the need of a DBF. </DIV>
<DIV> </DIV>
<DIV>Traian</DIV>
<DIV> </DIV>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV><FONT size=2>-----Original Message----- <BR><B>From:</B> Zac Spitzer
[mailto:zac.spitzer@gmail.com] <BR><B>Sent:</B> Thu 5/18/2006 3:31 AM
<BR><B>To:</B> users@mapguide.osgeo.org <BR><B>Cc:</B> <BR><B>Subject:</B> Re:
[mapguide-users] shp or sdf advantages/disadvanatges<BR><BR></FONT></DIV>
<P><FONT size=2>the same data in a SDF format is smaller than the equivalent
data in SHP format<BR><BR>On 5/18/06, shailesh
<shailesh@simplexindia.com> wrote:<BR>><BR>>
hi<BR>> I am currently using shp files for data resources and some of
the data is<BR>> above 80 mb<BR>> I think it makes the map very
slow to load<BR>> does converting into sdf or another format help it load
faster.<BR>> what are advantages /disadvantages .in terms of laoding
speed,attribute<BR>> table data etc<BR>><BR>> can i use the convert
to sdf option in studio or a there any other<BR>> specialized toosl for
doing it.<BR>> if converted to sdf can i still use the dbf assoicated with
shp for tooltips<BR>> and attribute data<BR>><BR>>
-shailesh<BR>><BR>>
---------------------------------------------------------------------<BR>>
To unsubscribe, e-mail:<BR>> users-unsubscribe@mapguide.osgeo.org For
additional<BR>> commands, e-mail:
users-help@mapguide.osgeo.org<BR><BR><BR>--<BR>Zac Spitzer<BR><A
href="http://whereszac.org">http://whereszac.org</A><BR>0405 847
168<BR><BR>---------------------------------------------------------------------<BR>To
unsubscribe, e-mail: users-unsubscribe@mapguide.osgeo.org<BR>For additional
commands, e-mail:
users-help@mapguide.osgeo.org<BR><BR></FONT></P></BLOCKQUOTE>
</BODY>
</HTML>