[Talk-us] Percentage of data imported vs mapped

Dave Hansen dave at sr71.net
Wed Jun 23 17:12:19 BST 2010


On Wed, 2010-06-23 at 12:05 -0400, Richard Weait wrote:
> On Wed, Jun 23, 2010 at 11:42 AM, McGuire, Matthew
> <Matt.McGuire at metc.state.mn.us> wrote:
> > Does anyone know the percentage of OSM data that is imported vs mapped in
> > the US? How does this compare to other countries?
> 
> When TIGER was imported it dominated the database and contributed data
> from all countries combined.  The US community is growing and
> individual contributions are growing, but so are imports from other
> sources.

In Oregon, 48% of the objects have been most recently modified by
non-TIGER sources.  Calculated this way:

grep -o 'user="[a-zA-Z0-9]*"' oregon.osm | sort | uniq -c | sort -n | grep -vi tiger | awk '{sum += $1} END { print sum;}'
grep -o 'user="[a-zA-Z0-9]*"' oregon.osm | sort | uniq -c | sort -n | awk '{sum += $1} END { print sum;}'

It's higher than I expected, personally.  Not too shabby.

-- Dave





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