[OSM-newbies] one country and updates

[weedget]

On 31.05.2012 20:10, Craig Wallace [via GIS] wrote:
> On 31/05/2012 15:16, weedget wrote:
>> Hi,
>>
>> I downloaded file for my country and uploaded it to database with
> success.
>> It was 2 months ago.
>>
>> How easy can I now update my data?
>> Should I get again whole file or I can do this with these diff
> which are
>> published by OSM (files for Poland I got from geofabrik.de)?
>> Any link to how to or something?
>
> If you only want to update every month or so, then yes it is probably
>
> easiest just to download a new complete extract. Then import it into
> your database, the same as you did originally.

Well, another question - if I've uploaded data for specific region eg. 
country, and I apply diffs eg. daily.
It will update only my data or will upload all data from diff file?

>> As I remember if tiles generation script (from mapnik) is omitting
> already
>> existing tiles, so is there any method to regenerate these which
> are
>> different?
>
> This depends on what sort of tile generation script you are using.
> If its just the generate_tiles.py, I don't think there is anyway of
> just
> rendering changed tiles. And it will skip any tiles that already
> exist
> in the output directory.

is there any method to find these tiles which should be rendered again?

> You could change the output directory, then it will render all of the
>
> tiles again.
> Though this may take a while, if it needs to render tiles for a whole
>
> country, at a high zoom level.

BR
Chris


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