Peter,
> At the National Survey we are in the process off creating a DEM over Denmark
> ( 45.000 sq km. with a resolution off 10 x 10 m).
>
> We already use oracle, fme and spatialdirect to distribute our data to
> different data formats.
>
> The question is how can we integrate this amount of data in our existing
> data distributing solution
> - do we load the grid into oracle (10g?), and then use fme to export to
> whatever the customers ask for
> - or should we make some sort of file based solution - ex. 5x5 km, and in
> what format, and again use fme to reformat it
> - or do we preprocess all data to mapinfo, esri and a xyz csv file and then
> distribute these files
>
> If any off you have any ideas or experiences we would be interested to hear
> about it.
I would suggest a combination of the first 2 options. Prepare the data
in standard block sizes and then build a clever FME solution around it
that, when somebody wants a specific area, selects only the blocks
covering that area and runs them through an FME workbench that stitches
them together to seamless tiles. This way, you can prevent having to
process too much data and you can quickly offer "standard" datasets. If
you want, I can send you a sample of a similar process.
I don't know what the situation in Denmark is in terms of large-scale
base maps, but ideally the DEM blocks would correspond in some way to
the map sheets.
Hope this helps.
--
Hans van der Maarel
Red Geographics
www.redgeographics.com / [EMAIL PROTECTED]
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