Er det ingen som har innsigelser? Eller forslag til forbedringer? Skal jeg bare fyre avgårde en e-post til [email protected]?
9. juni 2014 kl. 12:06 skrev Tor <[email protected]>: > Hei > > Jeg har fått beskjed fra Paul Norman i Data Working Group om å stoppe med all > import fra Kartverket inntil denne henvendelsen fra i fjor høst er besvart: > <https://lists.openstreetmap.org/pipermail/imports/2013-October/002283.html>. > > Jeg tviler på at jeg er den eneste som er kontaktet eller vil bli kontaktet. > > Vi må altså melde inn importen til OSM-importlista der vi legger frem en plan > for hvordan importen skal foregå, og der vi svarer ut følgende forhold: > * what data is scheduled for import > * how is that data converted to OSM - what tags etc. > * who does the imports - if it is a community import, how will you make > sure that people have enough local knowledge and technical knowledge to > do it right > * how will conflicts with existing data be handled > > Jeg har kladdet et utkast til tekst. > > UTKAST TIL TEKST: > > *Background* > In September 2013 the Norwegian Mapping Authority (Kartverket) released > various data sets under an OSM compatible licence (CC BY 4.0; > <http://www.kartverket.no/Kart/Gratis-kartdata/Lisens/>). > > OSM coverage in Norway varies from good to excellent in major cities to very > sketchy and imprecise in many rural areas (with huge white spaces on the > map). Norway is very scarcely populated, and we can't rely on manual edits > alone if we want to map the entire country. The data that Kartverket has > released gives us the possibility to raise the quality of OSM in Norway > considerably. > > This e-mail concerns imports from the N50 data sets in particular. It does > not deal with imports from other data sets from Kartverket, such as Vbase or > SSR. > > *What is N50?* > N50 is a collection vector data sets used for producing topographic maps > (typically 1:25 000, 1:50 000 or 1:100 000) for both civilian and military > use. N50 used as the main data source for almost all topographic paper maps > published in Norway. It is also used for producing electronic maps, such as > the Garmin topo maps. > > In general N50 data is of high quality, although some features are > exaggerated for rendering purposes. > > *Wiki page* > Information about import procedures can be found at the Kartverket imports > wiki page: <https://wiki.openstreetmap.org/wiki/No:Kartverket_import>. > > The wiki page is a work in progress and will be expanded. > > *File formats* > N50 data is available for download from Kartverket in SOSI format (divided > by municipalities) or in geoJSON format (whole country). > > A description on how to convert data from SOSI is given on the wiki page. > > *What data is scheduled for import* > The wiki page contains a list of the map features that are imported. > > The wiki page also briefly describes what should not be imported from N50, > either because the data is not appropriate for OSM (e.g. contour lines), > because it is imported from other sources or data sets (e.g. place names from > SSR or roads from Vbase) or because the N50 data is considered to be too > inaccurate or outdated (e.g. footpaths). > > Kartverket has made available a product specification for N50: > <http://www.statkart.no/Documents/Kart/N50-N5000%20Kartdata/Produktspesifikasjon%20N50%20Kartdata%20versjon%20mars%202014.pdf>. > > The specification should be consulted before a decision is made to import > features not already described on the wiki page. > > *Who does the imports?* > This is a community import. > > Only experienced mappers are encouraged to import data. > > Data is available in SOSI and geoJSON formats requiring conversion before > import. Although it does not automatically guarantee that people understand > the technicalities of OSM, the conversion process in itself requires at least > a minimum degree of technical insight. > > The N50 data sets contain huge amounts of data. Mass imports are discouraged. > People are encouraged to import only small amounts of data at a time, and > only after validating the data and correcting errors. > > *Tagging* > Only OSM tags are to be used. All Kartverket tags are either removed or > changed to OSM tags before import. > > All changesets and imported elements shall be tagged: > source=Kartverket > source:date=YYYY-MM-DD > > Tagging guidelines are given on the wiki page. > > Only features that can be tagged with appropriate OSM tags are imported. > > *How will conflicts with existing data be handled?* > As a general rule, existing data is kept. Data should only be imported if it > does not already exist or if it is of better quality than existing data. > > Conflicts with existing data should be sorted out before importing. If in > doubt, surveying on the ground should be carried out or other sources, such > as Bing imagery, consulted before existing data is replaced. > > In cases where imported data is used to replace existing data, importers are > encouraged to "replace geometry" if possible, thus retaining as much as > posible of the edit history. > > In many places in Norway (especially rural areas), conflicts with existing > data is unlikely to be an issue because there either is no data at all, the > particular element is missing in OSM, or because it is evident that the > element in OSM is of much lower quality (e.g. a square lake). > > *Mailing list* > The N50 import process has been discussed on the regular Norwegian OSM > community mailing list <[email protected]> (<http://wiki.nuug.no/grupper/kart>). _______________________________________________ kart mailing list [email protected] http://lists.nuug.no/mailman/listinfo/kart
