[OSM-talk] Freemap news: Geograph photos and contour heights

Nick Whitelegg Nick.Whitelegg at solent.ac.uk
Mon Feb 19 14:28:31 GMT 2007


Nick Whitelegg wrote:
>> Here's the latest news on Freemap: thanks to code contributed by Artem,
>> contours on Freemap now show heights.

>Looks good. But currently the rendering seems excessively picky about
>the quality of the ways (branching, ordering, segment direction?) and
>several roads are not rendered. While this is an incentive for me to
>clean up my early slovenly editing, other Mapnik renderings seem don't
>have this problem. 

This is basically because it goes via shapefiles, and is related to 
preparing the data so that it's suitable for shapefiles. The errors arise 
from with segments not aligned in the wrong direction, ways with 
non-contiguous segments, branched ways, or ways with two nodes rather than 
one at the join of two segments. The first two errors should not cause any 
problems, as they are fixed with the "wayclean" utility, but the last two 
are not fixed yet.

>I also look forward to the waterways being shown.

OK that's easily sorted out.

>
>> The other news is a linkup with the Geograph project. As you move the 
map
>> around on Freemap, camera icons will appear. Click on the icon and it 
will
>> show the Geograph photo at that location. This is part of where I see 
Freemap
>> headed: a general free data source for countryside users.

>This is a great feature. A small point: clicking on the picture to see
>the picture full size on the Geograph site should open a new browser
>window, otherwise you lose your position in Freemap. But maybe cookie
>storage of the position might be a better way, so that when you start
>Freemap you be somewhere you are interested in.

Good idea - I'll sort this out.

Nick

Chris


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