Thanks. Those were the types of hints I was looking
for.
__
Do You Yahoo!?
Tired of spam? Yahoo! Mail has the best spam protection around
http://mail.yahoo.com
-
To unsubscribe send a message to: [EMAIL PROTECTED]
-or-
visit http://groups
There are indeed many ways to have spatial indexing of vector data. Quadtree
have been used, but I understand they are more appropriate fro raster data.
Most spatial databases out there seem to use R-tree indexes or variations
thereof. Eg PostGIS uses a GIST index, which was (I think) developed
go to www.opengeospatial.org, download OGC_SFSv1.1 paper, maybe you can
find the answer there.
cheers,
On 02/03/06, Peter Thompson <[EMAIL PROTECTED]> wrote:
>
> Right now, I read coastline data (lat/long) from flat
> files and store it in a series of arrays in a program.
> Each array is many po
Right now, I read coastline data (lat/long) from flat
files and store it in a series of arrays in a program.
Each array is many points, representing line
segments. When I draw the vectors on the screen, I
check each array (which represents many line segments)
to see if the vectors should be displ
What do you mean by "retrieval of vector data"..?
Retrieval as in "I just retrieved it from the database". Do I gather you are
looking for effeicient data storage structures, or?
--
Barend Köbben
International Institute for Geo-information
Sciences and Earth Observation (ITC)
PO Box 6, 750
5 matches
Mail list logo
