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<div><br></div><div><br></div><div><br></div><div>5 Jul 2021, 11:57 by bkil.hu+Aq@gmail.com:<br></div><blockquote class="tutanota_quote" style="border-left: 1px solid #93A3B8; padding-left: 10px; margin-left: 5px;"><div>Consider the interpretation of shade=* as being a cuisine of lit=*. We<br></div><div>don't split a sidewalk around every street lamp to indicate high<br></div><div>brightness and again split it around each and every tree and bush that<br></div><div>could cast a shadow on the sidewalk</div></blockquote><div dir="auto">In cases where badly installed lamps have</div><div dir="auto">dark parts between them I split</div><div dir="auto">road/footeay into lit=yes lit=no segments</div><div dir="auto"> (yes, it is a bit subjective what counts as not lit)</div><div dir="auto"><br></div><div dir="auto"><br></div><div dir="auto">The difference is that</div><div dir="auto"><br></div><div dir="auto"><br></div><div dir="auto">- in case of placing lamps the goal is of</div><div dir="auto">making entire stretch of easy lit,</div><div dir="auto">something else happens in case of some</div><div dir="auto">weird plans or deep incompetence</div><div dir="auto"><br></div><div dir="auto"><br></div><div dir="auto">- lamps put light in one direction, not</div><div dir="auto">subject of rotation like most shades are</div><div dir="auto"><br></div><div dir="auto"><br></div><div dir="auto">> You may do it for</div><div dir="auto">your particular neighborhood, but as its cost is prohibitive (like</div><div dir="auto">100x-1000x as shade=*)<br></div><div dir="auto"><br></div><div dir="auto">For what? In case of shade from buildings</div><div dir="auto">where shade depends on time of year</div><div dir="auto">and day I am curious how you would even</div><div dir="auto">tag using it with shade.<br></div><div dir="auto"><br></div><div dir="auto">For building 30m high it will vary significant <br></div><div dir="auto">shadow deeply changing during day and year.<br></div><div dir="auto"> <br></div><div dir="auto">> As not many map or photograph at night, we<br></div><div dir="auto">> don't even know whether the lights are working. <br></div><div dir="auto"><br></div><div dir="auto">In such cases where it is likely</div><div dir="auto">mapping it without verification during night</div><div dir="auto">is a bad idea and not helpful</div><blockquote class="tutanota_quote" style="border-left: 1px solid #93A3B8; padding-left: 10px; margin-left: 5px;"><div>- imported government data about buildings (though not always the<br></div><div>height, roof shape and other minor quirks of its geometry),<br></div></blockquote><div dir="auto">Mapping approximate height of building</div><div dir="auto">can be done by surveying.<br></div><div dir="auto">See StreetComplete</div><blockquote class="tutanota_quote" style="border-left: 1px solid #93A3B8; padding-left: 10px; margin-left: 5px;"><div>- imported data about trees (along with taxon, age and height)<br></div></blockquote><div dir="auto">Tree size should be estimatable by measuring</div><div dir="auto">it's trunk diameter and species.<br></div><div dir="auto"><br></div><div dir="auto">Still easier than mapping whether it shades</div><div dir="auto">road depending on time of day and year.</div><blockquote class="tutanota_quote" style="border-left: 1px solid #93A3B8; padding-left: 10px; margin-left: 5px;"><div>- width of the sidewalk/footway<br></div></blockquote><div dir="auto">Doable with measuring tape, though not</div><div dir="auto">sure why it would be needed</div><blockquote class="tutanota_quote" style="border-left: 1px solid #93A3B8; padding-left: 10px; margin-left: 5px;"><div>But how common is it that one would have all required data?<br></div><div dir="auto"> <br></div></blockquote><div dir="auto">More likely than mapping shade= in way</div><div dir="auto">that would actually work given that</div><div dir="auto">shade changes during day</div><blockquote class="tutanota_quote" style="border-left: 1px solid #93A3B8; padding-left: 10px; margin-left: 5px;"><div dir="auto"><br></div><div dir="auto">Around<br></div><div>here, none one of these are available and thus most of the map is<br></div><div>blank in this aspect.<br></div></blockquote><div dir="auto">Nearly all are mappable by survey if<br></div><div dir="auto">someone wants.<br></div><div dir="auto"><br></div><div dir="auto">Mapping them will take less time than</div><div dir="auto">putting shade=* tags.<br></div><div dir="auto"><br></div><div dir="auto">Are you in place where somehow places</div><div dir="auto">are always shaded or almost never?<br></div><div dir="auto"><br></div><div dir="auto">In my area deciduous trees, changing<br></div><div dir="auto">sun location etc result in shade changing</div><div dir="auto">massively during year.<br></div><div dir="auto"><br></div><div dir="auto">Mapping shade=* would require unusually</div><div dir="auto">complex conditional syntax and ridiculous way splitting.<br></div><div dir="auto"><br></div><div dir="auto">Single 10 storey building would require</div><div dir="auto">footways split every 10cm around it</div><div dir="auto">(towards East, West, North from it)<br></div><div dir="auto">or such shade=* tags would be useless.</div><div dir="auto"><br></div><div dir="auto">That sounds like horrific idea that should</div><div dir="auto">be considered as ridiculous, unusuable,<br></div><div dir="auto">not worth encouraging and bad idea.<br></div><div dir="auto"><br></div><div dir="auto">Given bench or footway piece can be in shade or in direct sun.</div><div dir="auto"><br></div><div dir="auto">With timing changing by year and day.<br></div><div dir="auto"><br></div><div dir="auto">If you mark edge of shadow with stone</div><div dir="auto">and wait just few minutes you can see</div><div dir="auto">how edge of shadow moved.<br></div><div dir="auto"><br></div><div dir="auto">(works best for stark edge, with buildings</div><div dir="auto">rather than blurry edge of a tree shadow)</div> </body>
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