Este es el email que hemos enviado a la lista principal de imports. En él se describe qué es Cat2Osm2, las mejoras que tiene y estamos a la espera de ver si les parece coherente, hay cosas que no les gusta o posibles cambios.
2013/1/17 Cruz Enrique Borges <[email protected]>: > Hi everyone, > > We sent a message to imports list a few months ago when we finished > the first version of Cat2Osm. This is the results of almost two years > of work back-to-back with the spanish OSM community. It is a tool for > converting a whole municipality's spanish cadastre data [1], to an OSM > file for then checking manually some small errors cadastre could have, > fix them and import the necessary data into OSM. Please notice that > this is not meant to be a tool to mass import, in fact it is a tool to > help local mappers to improve existing data or having a good starting > point in empty places. We repeat, this is not an automatically import > tool!! > > The first version exported too much data and created lots of relations > so we've been working with spanish OSM community on a second version > of Cat2Osm2 [2], that simplifies the result by losing some extra info > like: > - reducing the number of relations. > - not taking in account building levels > - create the union for all rural areas which share the same tags > - pass building tags to parcels and remove the building when their > geometries are the same > > It also exports the result divided in urban/rural blocks which makes > it very easy for users to validate everything is ok, remove > unnecessary geometries and merge it with existing data. We also export > in separate files linear or points elements that can be also > interesting to import. > > What the spanish OSM community mainly wants to use from the result is > urban related data such as: buildings or parcel landuses and rural > landuses. However, Cat2Osm2 also exports street geometries that could > be suitable for checking if the existing street data is correct or > have a good start point. In fact the import list have already allowed > the use of this kind of data. > > Here's a link with the result for a village called AldeasecaDeAlba in > Spain [3]. If you look for Aldeaseca de Alba in OSM [4] you will see > it almost has no data (only street without names). Cat2Osm2 exports > the files separately as we previously said but it also concatenates > them into a global big file just in case someone wants to use the > result for his own GIS or for a quick review of the result. You will > find all this files in previous link. Please note that the concatenated > files is only intended for debug actions and the actual import process > will be made with the split files inside the directories. > > Once they've exported the result, at least two users have to review > each block before upload. We have already some wiki infrastructure to > coordinate this actions [6] but probably it would be better to have > a more productive one. > > There exists a import guide [7] with the general information in > English and a user guide [5] with tips that will be updated when local > mappers gain more experience working with this data. Please notice that > this work-flow will change as it is based on the use of the last > version on an specific city and cannot be suitable for other places. > We have already created imports accounts (one per province) [6] and > distributed to some expert users that would be in charge of the upload > process. We will be very strict with the process; we will not allow to > upload data with other accounts and if somebody does not respect the > rules we will ask the admins to take the appropriate action against > them as we have already done on several occasion. > > We hope you find this results suitable for being uploaded in those > places where some data is needed. > > [1] http://www.sedecatastro.gob.es/ > [2] http://wiki.openstreetmap.org/wiki/Cat2Osm2 > [3] http://paginaspersonales.deusto.es/cruz.borges/AldeasecaDeAlba.zip > [4] http://www.openstreetmap.org/?lat=40.81818&lon=-5.44678&zoom=17&layers=M > [5] http://wiki.openstreetmap.org/wiki/Minitutorial_para_cat2osm_Avila > [6] http://wiki.openstreetmap.org/wiki/Spanish_Cadastre/results > [7] http://wiki.openstreetmap.org/wiki/Spanish_Cadastre_import > > -- > Cruz Enrique Borges Hernández > Email: [email protected] > > DeustoTech Energy > Telefono: 944139000 ext.2052 > Avda. Universidades, 24 > 48007 Bilbao, Spain > > _______________________________________________ > Talk-es mailing list > [email protected] > http://lists.openstreetmap.org/listinfo/talk-es -- Ander Pijoan Lamas Research Assistant, Deustotech Computer Science Engineer University of Deusto E-mail: [email protected] Phone: +34 664471228 in: http://www.linkedin.com/profile/view?id=162888312 _______________________________________________ Talk-es mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk-es
