shapes to MySQL
Ker Nulov
kernu11 at YAHOO.COM
Fri Mar 3 11:08:49 PST 2006
I guess the time is wasted on searching, not drawing
(because small shapefiles are drown very fast) and I
thought .shx is the Shapefile index, I have no .qix
index at all and I have hunderds of shapefiles. This
is what I have:
-rwxr-xr-x 1 root root 1687086 Feb 17 08:27
Cdmexm_region.dbf
-rwxr-xr-x 1 root root 187 Feb 17 08:27
Cdmexm_region.prj
-rwxr-xr-x 1 root root 78934876 Feb 17 08:27
Cdmexm_region.shp
-rwxr-xr-x 1 root root 1124780 Feb 17 08:27
Cdmexm_region.shx
Is there a open source utility to create .qix? Never
heard of them, looks interesting.
--- Stephen Woodbridge <woodbri at swoodbridge.com>
escribió:
> Ker Nulov wrote:
> > Ohh, well, my shapefile 78 MB and it has 140,000
> > polygons. displaying 1km of zoom taks 1 sec, this
> is
> > too much for our application. I bet a query in
> MySQL
> > will be faster.
>
> What makes you think that? Where IS the performance
> going to? Search for
> the objects, reading them from disk, of rendering
> the objects? If you
> don't know then you are probably trying to optimize
> the wrong thing.
>
> Many of us have been working with mapserver for
> years and we have looked
> into these questions and I can tell you (as Attila
> did) that shapefile
> are the fastest. Do all you shapefiles have spatial
> indexes *.qix files
> associated with them? Start there.
>
> To answer your question, NO, you can not put your
> shapefiles in MySQL
> and render then via mapserver. You can put them in
> postGIS, but they
> will be slower than shapefiles.
>
> -Steve W.
>
> > --- Attila Csipa <plists at prometheus.org.yu>
> escribió:
> >
> >
> >>On Friday 03 March 2006 16:38, Ker Nulov wrote:
> >>
> >>>draw layers using MySQL access? I need it to
> >>
> >>improove
> >>
> >>>speed. My application uses mapscript with php.
> >>
> >>Shapefiles are likely the fastest storage for
> >>small/generic data, moving to
> >>mysql (or any other database for that matter) will
> >>probably not speed up
> >>things on itself unless you're really using some
> >>DBMS specific feature.
> >>
> >>
> >
> >
> >
> >
> >
> >
> >
> >
>
___________________________________________________________
>
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> > La mejor conexión a Internet y <b >2GB</b> extra a
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> >
>
>
___________________________________________________________
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