On 10/3/07, William Kyngesburye <[EMAIL PROTECTED]> wrote: > I'm curious about rasters in PostGIS also. I heard about PGRaster at > FOSS4G. > > What about these 'religious objections'? Or at least, can you > describe the pros and cons? or all cons ;)
Here is what I can think -- Pro db: Everything is in one self-contained "database" Pro db: Database security and management automatically secures and manages the images Pro db: Indexing allow access to portions of the imagery Pro db: Can store unlimited attributes about the image to enhance the applications Con db: Access to imagery possible only through the database Con db: The database becomes bloated Con db: The access may be slower than from the raw filesystem Pro fs: Filesystem access may be faster than via the db Pro fs: The db remains svelte Pro fs: Images can be accessed by any application withoug going through the db Con fs: Have to secure and manage the images separately from the db, else they are accessible to anyone if they have access to the computer Con fs: If the number of images is very large, some kind of hierarchical directory structure will have to be devised to allow quick access (most fs become slow after a few thousand files in a directory) Con fs: Can't access selective portions of an image... it is all you can eat or nothing Con fs: Can't store/access additional attributes for an image _with_ the image > > On Oct 2, 2007, at 1:45 PM, Paul Ramsey wrote: > > > Those of you still breathless at the opportunity to store your > > images in the database entirely (fools!) feel free to review Xing > > Lin's work in this branch. It's good work, though obviously I have > > religious objections to it... :) > > > > http://svn.refractions.net/postgis/branches/gSoC2007_raster/ > > ----- > William Kyngesburye <kyngchaos*at*kyngchaos*dot*com> > http://www.kyngchaos.com/ > > "Oh, look, I seem to have fallen down a deep, dark hole. Now what > does that remind me of? Ah, yes - life." > > - Marvin > > > _______________________________________________ > postgis-users mailing list > [email protected] > http://postgis.refractions.net/mailman/listinfo/postgis-users > -- Puneet Kishor http://punkish.eidesis.org/ Nelson Institute for Environmental Studies http://www.nelson.wisc.edu/ Open Source Geospatial Foundation (OSGeo) http://www.osgeo.org/ Summer 2007 S&T Policy Fellow, The National Academies http://www.nas.edu/ _______________________________________________ postgis-users mailing list [email protected] http://postgis.refractions.net/mailman/listinfo/postgis-users
