[OSM-newbies] Help with JOSM

[Christoph Eckert]

Hi Francis,

> I'm doing the following: downloading data from OSM, making my  
> changes, uploading it back.

sounds OK.

> However, when retrieving it another time, I'm getting double ways,  
> one above the other!

Are those exactly the same, or does it look as anotherone accidentally 
mapped the same region?

> I mean, shouldn't I upload after working?

Of course you have to upload it.

> It seems it's uploading things that were untouched,
> thus creating double 
>   stuff of what is already there! How can I prevent that?

Do you save the data with OSM? If so, upload your stuff, and after 
uploading ensure to save again. Otherwise JOSM does *not* know that the 
recent data already has been uploaded and will upload it again when 
loading the data in a new session!

> Also, I have a way that splits and joins back, like this
>
> ----<>----
> The <> is just one way. Is there a way of doing that on a single way,
>   or ---- should be one way, <> another and --- another?

Either that, or ---^--- as one way and \/ as another one. Your method 
will make three ways (which is OK), mine only creates two ways and 
rendering will be better if there was a street name.


HTH and have fun,

ce