Hello Thomas, are you also living in São Paulo, or just passing time there? I am myself an estrangeiro living in Brazil and love to see the community grow. Unfortienately I live far from SP, but we need to cover alot of ground in this waste country.

I do not plan to just download such data and start working, my plan is to inform them of my purposes and ask them to send me the most uptodate detailed data they have, so that I can work on the latest. Often it seems like the data on the web pages might be the "previous latest". I will feel much more confident about both the uptodate issue and the copyright issue when I have it straight from them.

I will of corse inform them about the entire OSM project, who knows, maybe some there decide to contribute more actively?

You can also help out with looking at Marine Mapping and the marine-tagging proposal. I have had an idea of harvesting ecco sounder data to build a sort of SRTM data source for depths, but havn't got the idea further than random thoughts.

-A

Maybe a solution is to take the list of lighthouses from Wikipedia, go there and get the possition on your GPS, and than add them? Atleast than you are not using Wikipedia data as other than a catalog, and you are not using copyrighted hydrographic data.

Maybe layer=-1 or layer=-2 is the right way?

Carefully on the OSM Sanity Test on the wiki, you get a free point for being married to an OSMer :D

Welcome onboard from S22W040

If you can get any hydrographic organization to liberate their list of light or similar to OSM, than you probably can get a CVS or other format datafile that can be converted to something usefull for the normal bulk upload scripts, though I would guess that the most difficult part is to get the data liberated.

What I would love to see is a datalogger with GPS, GLONAS, IALA corrections and SBAS enabled, a few years ahead I would also like Galileo enabled, and I am watching with interest if the Indian Space Program can deliver a 4th system. 3 different satllite based possition systems with two augmmentation systems, all set to enhance each other will probably give the highest accuracy in the market when it comes to handheld units, and with a trackpoint every second than you are all set for putting your world on the map.

If you cannot compete on price, lets compete on accuracy!

A town or an area can be declared when two mappers independently can verify the data and waver for it. If you have a wikipage using the status template you can mark it as 3 (light green) when you are satisfied with it, and when somebody else verify the status as completed move it to 4 (dark green)

The level of data and the freedom of tags is some of what makes OSM so great. Thanks for helping out here in Brazil

I am of course trying to combine it, but that is not easy. Will probably be better with time.

You can callibrate altitude in most advanced handheld units, but mark that Geoid altitude and reality differs around the planet, +/- 60 meter AFAIK.

I wonder when I can get my wife to open her eyes for OSM, up to now she have been more yelling at me for "spending too much time on that stupid map", and "you will never make money on that" or other arguments of the same sort.

Congratulations, I have had the same idea, but uneven cobblestone is not very pram friendly, my son is now over 1 year old, so he can soon be walking with me, that gives me the opertunity to take paper notes while walking. Started to take notes on some of the asphalt paved roads though

How come some people have a constant urge to tag everything? Isn't it possible to leave small specs of white on the map? Besides, the area around the church probably have some other purposes than one would expect of amenity=place_of_worship, so if tagged it should be of the other purposes, park, garden, meadow, common, cemitary, estate, parking lot, all of these are much more accurate than place_of-worship, unless prayer or messes regularly take place there as well.

Going to make my own navigator device as well, doesn't hurt to combine forces :D

Remember to follow the high water line - Good initiative, no doubt it will be more accurate than most of the data imports, try to export the idea to other countries as well.

All the news flashes about future GPS failures are a cry for money of two reasons. GPS are pushed by alternative DPS systems such as Galileo and GLONAS, and solar-flare activity are close to peak, which seriously reduces the countability of satelite-based systems. IMO, producers of units, both handheld and larger should include support for multiple systems as well as alternative augmentation systems, such as IALA. A unit that uses several systems will have a higher possition accuracy than a unit relying on only one system, whether it is GPS, Galileo, GLONAS, or anything else.

Parabens, achou vc vai representar tudo nos que fazer obras aqui no Brasil.

it have different names in different countries, maybe you will call it speed camera? automated traffic enforcement?