<div dir="ltr"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">if you have x number of detached residences occupied by offices,<br>
it is not a landuse=residential<br></blockquote><div><br></div><div>Then it's mistakenly tagged. You do not use `building=detached` for shops and offices. Per the wiki, <a href="https://wiki.openstreetmap.org/wiki/Tag:building%3Ddetached">https://wiki.openstreetmap.org/wiki/Tag:building%3Ddetached</a></div><div><br>> A detached house is a free-standing residential building usually housing a single family. <span style="color:rgb(32,33,34);font-family:sans-serif;font-size:14px">Known as a</span><span style="color:rgb(32,33,34);font-family:sans-serif;font-size:14px"> </span><i style="color:rgb(32,33,34);font-family:sans-serif;font-size:14px">single-family home</i><span style="color:rgb(32,33,34);font-family:sans-serif;font-size:14px"> </span><span style="color:rgb(32,33,34);font-family:sans-serif;font-size:14px">in the United States, a</span><span style="color:rgb(32,33,34);font-family:sans-serif;font-size:14px"> </span><i style="color:rgb(32,33,34);font-family:sans-serif;font-size:14px">single-detached dwelling</i><span style="color:rgb(32,33,34);font-family:sans-serif;font-size:14px"> </span><span style="color:rgb(32,33,34);font-family:sans-serif;font-size:14px">in Canada, a</span><span style="color:rgb(32,33,34);font-family:sans-serif;font-size:14px"> </span><i style="color:rgb(32,33,34);font-family:sans-serif;font-size:14px">separate house</i><span style="color:rgb(32,33,34);font-family:sans-serif;font-size:14px"> </span><span style="color:rgb(32,33,34);font-family:sans-serif;font-size:14px">in New Zealand and</span><span style="color:rgb(32,33,34);font-family:sans-serif;font-size:14px"> </span><i style="color:rgb(32,33,34);font-family:sans-serif;font-size:14px">Maison individuelle</i><span style="color:rgb(32,33,34);font-family:sans-serif;font-size:14px"> </span><span style="color:rgb(32,33,34);font-family:sans-serif;font-size:14px">in France.<br><br>It includes the _function_ of the building.<br><br></span></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">> it follows from the detached residences inside<br>
<br>
if all plots have fences or hedges entered in osm, or if<br>
the buildings touch each other, an algorithm allows you to build<br>
the landuse=* of each building and merge the identical landuses<br>
but sometimes you don't have enough info to find the value<br>
of the landuse, so you don't have the info to create anything<br>
other than a landuse=yes around each building 8or a place=plot)<br></blockquote><div><br></div><div>It's not about coverage: humans tagging landuse do not have to have any specific quantity of info. They can infer from the landuse of an entire suburb by a specific street. And the same is true about a strip mall. If I I have one building with 25 offices inside and that's all that's in OSM, it's commercial. If a building has 25 shops inside and that's all that's in OSM it's retail. Seems pretty basic. Now let's assume you have 24 retail shops in a building and the owner is living upstairs on the second floor: that's a 24:1 ratio. A computer can store that calculation on the landuse. Currently the mapper just says "good enough" and the consumer is left to wonder how accurate the mapper was.</div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
but this is not reality... plot boundaries can be absent from osm...<br>
or a large enough plot can have commercial activity on one side<br>
and residential activity on the other -> 2 landuse=* in osm<br></blockquote><div><br>I haven't seen a single plot in Houston. I have no idea why these matter. Lift isn't mapping out plots before they map out unnamed landuse. I don't see how these are factoring into the conversation. Humans can't typically observe plots. Landuse is being mapped on the basis of the buildings contained.<br><br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><br></blockquote></div><div dir="ltr" class="gmail_signature"><div dir="ltr"><div>--</div><div>Evan Carroll - <a href="mailto:me@evancarroll.com" target="_blank">me@evancarroll.com</a></div></div></div></div>