[Tilesathome] Low Zoom

spaetz osm at sspaeth.de
Wed Jul 16 05:51:51 BST 2008


On Tue, Jul 15, 2008 at 02:54:22PM -0700, Alan Millar wrote:

> I believe the pale color is not intentional but just an artifact of the
> current basic scaling, waiting for one of us to fix it :-)   

That sums it upp pretty nicely. I just made it look ugly, to increase the pressure on you to submit patches :-))

> I think the
> current stitcher also does not composite the lowzoom captions on, at least
> when I checked a day or two ago.

I don't think the "old" stitcher did that, did it? I thought we were all still waiting for someone to sort out the projection issues in osma, so that captions were actually were the corresponding cities were :-).
 
> I'm in the process of setting up a test tile server environment of my own
> so I can help develop fixes for this.  There are a number of hardcoded
> items and dependencies which are not obvious at first.  I'm making notes
> as I go along.

Allan, much appreciated. I would like to remove as much hardcoded things as I can (if performance of tile serving doesn't suffer too much). If there are other dependencies we should add them to the INSTALLATION instructions. You do have an SVN account, so feel free to change the INSTALL doc, or add other documentation files.

>  And then there is that problem of me not knowing python,
> django, or cairo.  Well then, it's time to get started...

The usage of Cairo is pretty primitive (exclusively used for stitching), we could easily switch to PIL (python imaging library), although I guess that that wouldn't really help you :-). Any other language could also be used, although python is easiest as it has access to the PNG data of tiles without needed to use a command line client. Although it would be kind of trivial to write a tile extractor in perl too.

spaetz




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