evan_tech -- sf bike maps

03:41 pm, 1 Mar 08

sf bike maps

Dear Lazyweb,
Why hasn't someone rendered the SF bike map to a bunch of PNGs and made a Google Maps-style draggable interface to it? It takes my computer five seconds to render a given view of the enormous PDF they provide.

Failing that, could anyone point me at a Javascript library for doing this? The PDF→PNG and hosting stuff I got covered, but I don't really need more projects right now.

mart
You might like to take a look at OpenLayers. It's used by OpenStreetMap for their so-called "slippy map".

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- trs80 [typekey.com] Or Evan could load the data up into OSM (if the license allows) and http://www.gravitystorm.co.uk/osm/ will do the rest.
  
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nibot On a kind-of related note, I was just thinking how awesome it would be if I could overlay census data on g maps.

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en_ki Dear Google Employee,

Why doesn't Google Maps include bike map data?

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- jwz Srsly. Driving directions should have an optimization for slope and bike paths.
  
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3smallishmagi	These people: http://zoomify.com/ have a free app that converts an enourmous image into a heirarchy of little tiles. They have a free flash viewer that works ok too. Thankfully I'm not the only person who hates flash. These people: http://brainmaps.org/index.php?p=brain-maps-api have a javascript viewer that takes a folder in the above format.
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idealisms	Isn't the png sufficient? I made a png of the pdf a while back (4977 x 3707, 8-bit/color RGB, non-interlaced) and it loads quite fast in a browser. Although the main advantage is that it doesn't have to redraw all the layers each time I scroll or zoom.
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eqe The bike map is not free-as-in-speech, so an online distribution would have to have a license from the copyright holder.

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eaterofhands

Every six months or so I get back into wanting to work on a bike routing solution. A friend of mine, Dan, was working with the byCycle team for a while, and had a working beta of Seattle's data. byCycle uses GIS data to allow direction finding. The project was abandoned though, with dreams to eventually allow user submitted routes that could be characterized with such things as safety values, scenery, etc and incorporated into the route finding engine.

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mart	You might like to take a look at OpenLayers. It's used by OpenStreetMap for their so-called "slippy map".
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trs80 [typekey.com]	Or Evan could load the data up into OSM (if the license allows) and http://www.gravitystorm.co.uk/osm/ will do the rest.
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nibot	On a kind-of related note, I was just thinking how awesome it would be if I could overlay census data on g maps.
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en_ki	Dear Google Employee, Why doesn't Google Maps include bike map data?
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jwz	Srsly. Driving directions should have an optimization for slope and bike paths.
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eqe	The bike map is not free-as-in-speech, so an online distribution would have to have a license from the copyright holder.
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