Ian, thanks for the interesting data. I believe we are all somewhat relieved that we are recovering from the redaction process relatively fast, if not faster than expected.
Simon PS: There is however still room for a large mapping party in Sydney to collect street names :-) Am 25.05.2013 13:08, schrieb Ian Sergeant: > I crunched some numbers comparing AU planet extracts from today and > prior to the redaction commencing. Although they were for my personal > edification, I thought I'd share them. > > We have about 70,000 km of additional mapped unclassified and > residential road now than we did before the redaction process - that > is an increase in distance of about 27%. In terms of distance of > named roads in this category, we're about where we were before the > redaction in absolute terms. > > Trunk and motorways there is no significant variation. The number of > kilometres of mapped road and named roads in this category is roughly > unchanged. > > In primary, secondary, and tertiary, we've had an increase in mapped > distance of 35,000km, or around 20%. Although we've seen a > significant decrease in the number of secondary roads, and marked > increase in the mapped km of tertiary roads. Our post-redaction > remappers have a tendency towards tertiary roads, it would seem. Our > length of named roads in this category is up in actual kilometres, but > down on a relative basis. > > In paths, tracks, footways and cycleways and service roads our mapped > distance is also up, We've seen huge increases in mapped tracks - > closing on double what we had before. > > So, my summary would be that we've probably comprehensively remapped > he motorways and trunk roads across the country. We've got > significantly more tracks, paths and residential/unclassified roads > than we had before. There would seem to be artifacts of extensive > aerial remapping, with the lower percentage overall of named roads, > and what I'm thinking could be a consequent tendency to underrate what > passes for a secondary road in Australia. I'd also attribute greater > mapping outside of urban areas to the more extensive bing imagery > coverage, and possibly the focus of the redaction process on urban areas. > > Of course, this is all quantitative data, not qualitative. Take it > for what it is. My summary is just a guess, and I can't say with any > certainty that the increase in distance isn't just fence posts on the > Kimberley! > > Ian. > > > > > > > > > > > > > > _______________________________________________ > Talk-au mailing list > [email protected] > http://lists.openstreetmap.org/listinfo/talk-au
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