On 6/11/08, Christophe Leske <[EMAIL PROTECTED]> wrote: > > Shane Harrelson schrieb: > > Were you able to try this Christophe? I expect it to only be a very > slight > > performance improvement, but I'm still curious as to how much. > > > Shane, > > thanks for getting back to me for this, but I haven´t tried this yet. I > will do so now. However, i need 7 dimensions now in my rtree class, as i > added the size of the city to the rtree table (along with lon and lat)
If you only have longitude, lattitude, and class, (7 columns, min/max for each plus id), then you only have 3 dimensions and you can set the max dimensions define to 3. #define RTREE_MAX_DIMENSIONS 3 My setup is somewhat special, in that i am using the sqlite3 command > line interpreter for querying the database and then retrieving the info > via stdout. > > I was also busy investigating a crash that occured when using the rtree > extension under Windows Vista - it seems as if there is a path size > limit and/or path character issue in sqlite3. > > My client was using a long, convulated path to the directory holding the > database and extension, and the app kept crashing although it worked > here for me on my Vista machine. > > Moving the app to a root folder of the disk fixed the issue apparently. > > I got several questions regarding this: > > - what is the path length imposed in sqlite for extension loading? > - are there any special characters not to use in a path to an extension? - are there any special switches one is supposed to use for Vista > compilation of the rtree extension? I am not aware of any special switches for Vista. - what is the scheduled publishing date (if any) for Sqlite 3.6 in which > the rtree extension is supposed to be part of the standard distribution? > > I´d rather prefer to use an official build of the rtree than mine, as I > am having trouble to get consistent file sizes when compiling the > rtree.dll. > > Strangely enough, the first version that actually worked of the rtree > dll is just 25Kb in size. Any other attempt since then to compile a > release version of the dll always resulted in a clearly bigger filesize, > like 80Kb. > > Smallest i am getting now is about 60Kb, and i can´t figure out what I > did, as this is exactly the same source code, minus the manifest file. > But even by readding it, the resulting dll is always bigger... > > > > > -- > Christophe Leske > > www.multimedial.de - [EMAIL PROTECTED] > http://www.linkedin.com/in/multimedial > Lessingstr. 5 - 40227 Duesseldorf - Germany > 0211 261 32 12 - 0177 249 70 31 > > > _______________________________________________ > sqlite-users mailing list > sqlite-users@sqlite.org > http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users > _______________________________________________ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
