Jukka,
it depends upon what your desired result is. If you just want to replicate
maps, the answer might differ from seeking to work with the information
contained within the maps. Either way, if your data is going to exceed 6GB, you
probably ought to be looking to one of the DBMS solutions, PostGRES (underlying
PostGIS) or Oracle. That would give an added benefit that your data are
accessible from a wide variety of tools.
Best wishes,
Peter
Jukka Rahkonen wrote:
Hi,
I am combining some GIS data where each layer is divided to around thousand
separare shapefiles by mapsheets. Now I would like to store all the 35000
shapefiles to something that is more easy to handle. At first pushing each layer
to own Spatialite database feeled perfect, but I have problems with one layer
which has rather lot of data. Appending shapefiles one by one to Spatialite
database gets too slow after the database file has reached a size of around 6
gigabytes. Up till 3-4 gigabyte file size appending data to Spatialite is pretty
fast and because it is a database I guess I will use that for small layers. But
what might be the fastest vector format that ogr supports to collect the big
layer (thousand shapefiles with total size of about 10 gigabytes) together? I
would prefer some file based format because data goes to long-time storage, but
I can use Oracle or PostGIS in between if it is faster to do the conversion in
two steps. What is recommended? Shapefiles, MapInfo tab, Oracle, PostGIS or
something else?
-Jukka Rahkonen-
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Peter J Halls, GIS Advisor, University of York
Telephone: 01904 433806 Fax: 01904 433740
Snail mail: Computing Service, University of York, Heslington, York YO10 5DD
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