-Kevin Farrugia kevinfarru...@gmail.com
---------- Forwarded message ---------- From: Kevin Farrugia <kevinfarru...@gmail.com> Date: Thu, Dec 11, 2008 at 7:09 PM Subject: Re: [Talk-ca] Why import all of Geobase/Canvec? To: Matt Wilkie <matt.wil...@gov.yk.ca> If it isn't much trouble, I'd suggest adding hydrology before adding DEM or contours. Although contours are important for somethings, hydrology is much easier and quicker to recognize than a small change in the landscape, since rivers and bodies of water generally cause large changes in the elevation and landscape. That being said, I don't think hydrology should necessarily be added by default either, besides bodies of water because they don't change (much) over time. Rivers, creeks & other water courses could always be added at a later date in a manner than allows users to trace them on to the map. I think we just have to be a bit conscious of project creep and that the map doesn't become too busy. It's something that adding all of the data that both the DEM rasters and hydrology vectors contain might cause. The map has to be easy to read so that a grandparents can read & understand it as easily as a paper map while someone who likes detailed maps can find all the useful and pertinent information they're looking for. Contours are more likely to confuse people than water because they're quite rare in mass-produced consumer road maps, although I could see some sort of DEM layer being useful in a seperate mode (much like Google Map's terrain mode). -Kevin Farrugia (Kevo) On Thu, Dec 11, 2008 at 6:33 PM, Matt Wilkie <matt.wil...@gov.yk.ca> wrote: > > Elevation contours can be of real interest, I gather some bicycle > > groups in Germany have used elevation data in OSM for things like > > planning tour routes (not only do bicycle rides want limits on > > distance/day they also want limits on sudden changes in elevation (no > > steep hills)). > > It's easier to do that kind of calculation from a digital elevation > model than contours. > > > As for hydrology, by attitude would be, if it isn't much trouble to > > add, why not? > > The theme of my questions is based on the premise that it likely will be > a lot of trouble. :) > > cheers, > > matt wilkie > -------------------------------------------- > Geographic Information, > Information Management and Technology, > Yukon Department of Environment > 10 Burns Road * Whitehorse, Yukon * Y1A 4Y9 > 867-667-8133 Tel * 867-393-7003 Fax > http://environmentyukon.gov.yk.ca/geomatics/ > -------------------------------------------- > > _______________________________________________ > Talk-ca mailing list > Talk-ca@openstreetmap.org > http://lists.openstreetmap.org/listinfo/talk-ca >
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