[osmosis-dev] Feature request - a margin around a bbox

[Brett Henderson]

Hi Richard,

On 11 September 2012 22:41, Richard Mann
<richard.mann.westoxford at gmail.com>wrote:

> Dunno if this is the right place for a feature request, but here goes...
>
> I'm extracting the data to render a particular z8 tile, and rather than
> using completeWays, I'm calculating the lonlats for a bbox that has a 2%
> margin around the z8 tile (because that's quicker to run).
>
> So the feature request is for an additional "margin" option to --bb that
> takes the specified left&right (or the ones inferred from x1 or x1&x2), and
> adjusts them to add a percentage margin, and similarly with top&bottom (or
> y1 or y1&y2). If only one of left/right, or only one of top/bottom is
> specified, no adjustment would apply.
>
> This would allow the command to be shortened from:
> --bb top=51.635647777009 left=-1.434375 bottom=50.7188239087754
> right=0.028125
>
> to:
> --bb zoom=8 x1=127 y1=86 margin=2
>
> and which has the distinct virtue of avoiding lots of external lon/lat
> calculations.
>
> Any chance of that being implemented?
>

It seems reasonable to me.  It'll get done a lot quicker if you can send a
patch though, I'm not likely to get it done any time soon.

Brett
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