<div dir="ltr"><div dir="ltr"><div>I've always been of <a href="https://help.openstreetmap.org/questions/23994/tagging-landuse-in-downtown-areas">the view</a> that one should map the primary landuse at ground level, so for a typical UK city or town centre retail would generally apply. Most usually have some obvious ancillary commercial areas of mainly offices. We don't have a specific landuse for entertainment dominated areas, although that might be useful. I'd reserve landuse=mixed for areas where retail, office and residential are really heavily interspersed at the street level (unusual in the UK except perhaps where retail is in retreat). An alternative is to use a broad brush landuse=commercial. My general experience of consuming these tags is that broad-brush tags are actually much less useful than apparently more restrictive ones. Basically, its far more useful to know that somewhere is a shopping area than that it's not residential.</div><div><br></div><div>For suburban shopping parades I think landuse=retail is fairly standard, although most will have flats above (these are often quite hard to use as security for mortgages, apparently fast food outlets have quite a high risk of fire).</div><div><br></div><div>Although one could add a secondary_landuse tag, in general I think it's better to just subtag the type of retail area and this can be used to inform likely secondary uses (a parade likely has residential use, a retail park no other secondary uses, a town centre both commericial & residential). </div><div><br></div><div>Specific problems currently arising are the conversion of former office blocks or offices in a mixed-use retail/office block to flats (mainly student flats). It's difficult to be precise but my impression is that city centre offices are declining fast in favour of student flat conversions. Some of this, at least, is driven by parking restrictions favouring some office businesses to relocate out-of-town. One could do more detailed microtagging of building use or of operator. I think identifying student flats is something of general interest as it is quite a significant change in many places.</div><div><br></div><div>Elsewhere with less restrictive planning categories (and associated potential rental income) it can be very hard to categorise. As far as I could see most places in Buenos Aires were completely mixed landuse.</div><div><br></div><div>Last point is that it is possible to programmatically identify some of these areas, providing that shops and other POIs are mapped in detail. See my old <a href="https://sk53-osm.blogspot.com/2013/04/segmentation-of-retail-landuse-why-do.html">blog posts</a> and Stefan Keller's <a href="https://2018.stateofthemap.org/2018/A30-Areas-of-Interest_for_OpenStreetMap_with_Big_Spatial_Data_Analytics_/">presentation</a> at SotM18 on Areas of Interest.</div><div><br></div><div>Jerry</div></div></div><br><div class="gmail_quote"><div class="gmail_attr" dir="ltr">On Fri, 1 May 2020 at 12:23, Nick Whitelegg <<a href="mailto:nick.whitelegg@solent.ac.uk">nick.whitelegg@solent.ac.uk</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px;border-left-style:solid">
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Hi,</div>
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Meant to include this in my other post, but...I'm noticing that several cities in the UK (Bristol, Bath and Chester are good examples) don't seem to tag the city centre area with an appropriate landuse tag (presumably retail, commercial or residential).</div>
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This is something I've missed over the years... but what is the common practice for tagging city centre areas? Presumably the above three landuses are not used because city centres are typically a mixrure of all three.</div>
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What I'm trying to achieve is a 'built-up-area' rendering which covers the whole of the built up area of a town or city. Not looking for administrative boundaries - but the actual physically built-up area.<br>
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Thanks,</div>
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