<div dir="ltr"><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">But from your computer science background you should realise there are costs involved. To mark a building as a node is one line in the database. As a way well there are four nodes for a start each with its lat and long, then you have the connecting way. Have you saved a bit of .OSM and opened it in Notepad++? Try it sometime. Open JOSM download a tiny area ie a building and take a look. Download a node and take another look.<br><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">So we have time costs in mapping, plus internet costs in uploading the additional information, storage in the main OpenStreetMap database, additional costs in downloading, more storage required on smartphones in the field more processing required at all stages. The time costs in mapping mean given the number of mappers we have few projects will get mapped. We also have experienced OpenStreetMap mappers mapping who may not follow HOT guidelines. These will need retraining and how will you reach them?<br><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">In Africa internet transmission costs are much higher than locally in North America so ideally we want to minimise these. <br><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">Then you get to the added value.<br><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">Take a look at <a href="http://tasks.hotosm.org/project/2656#task/102">http://tasks.hotosm.org/project/2656#task/102</a> when I validated it recently for a highways project it seemed to me that most buildings=yes were twice or three times the size of the building sometimes covering more than one building, at least they were mostly square. For HOT projects this is not untypical but strange shapes tagged building=yes abound. I've seen tiles when only half the buildings have been mapped but the tile marked done.<br><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">The true added value is being able to estimate population. How many people are there that need to be vaccinated. If the buildings are mapped accurately then you stand a chance. You may have seen some references to the JOSM building_tool plugin, try it if you haven't. You take the number of buildings and their combined area and you can make some reasonable guesses. The area data is so unreliable you might as well have asked for nodes and to be honest you stand a better chance of them all being mapped.<br><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">I take it you took all these points into consideration before saying that building=yes nodes should not be used?<br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">The place to raise the issue is with OpenStreetMap, its their map and there will be different points of view and it might be worth checking how many there are in the map already.<br><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">Cheerio John<br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On 22 May 2017 at 11:18, Enock Seth Nyamador <span dir="ltr"><<a href="mailto:kwadzo459@gmail.com" target="_blank">kwadzo459@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small">On personal level I feel mapping buildings as nodes is very wrong so I avoid it. </div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small">But I think tagging nodes as building should be looked at very well. I will recommend it is deprecated.</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small">Best,</div></div><div class="gmail_extra"><br clear="all"><div><div class="m_-3103392877728901351gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div>- Enock<br></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div><div><div class="h5">
<br><div class="gmail_quote">2017-05-20 11:38 GMT+00:00 Vao Matua <span dir="ltr"><<a href="mailto:vaomatua@gmail.com" target="_blank">vaomatua@gmail.com</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">My opinion is that buildings should be mapped as areas.<div>In un-mapped areas it would be best to create landuse=residential areas first rather than quickly tagging buildings with single nodes. When it comes time to trace buildings it is troublesome to convert single nodes to polygons.</div><div>For existing single node areas they could be cleaned up on an as-needed basis.</div><div><br></div><div>Emmor</div><div>(Palolo)</div></div><div class="m_-3103392877728901351HOEnZb"><div class="m_-3103392877728901351h5"><div class="gmail_extra"><br><div class="gmail_quote">On Sat, May 20, 2017 at 2:10 PM, Bjoern Hassler <span dir="ltr"><<a href="mailto:bjohas+mw@gmail.com" target="_blank">bjohas+mw@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Dear both, dear all,<div><br></div><div>If we're agreed that it's better to map buildings as areas - should we try to re-map node-buildings from previous campaigns as areas? Or shall we just leave it?<br><div><br></div><div>Many thanks,</div><div>Bjoern</div></div><div class="gmail_extra"><br><div class="gmail_quote">On 19 May 2017 at 17:54, Cascafico Giovanni <span dir="ltr"><<a href="mailto:cascafico@gmail.com" target="_blank">cascafico@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><p dir="ltr">AFAIK Osmand renders addr: housenumber also for polygons [1].</p>
<p dir="ltr">Anyway I agree to the general rule that rendering has to adhere to mapping (and not VS).<br></p>
<p dir="ltr">[1] <a href="http://cascafico.altervista.org/public/Screenshot_2017-05-19-18-40-41.png" target="_blank">cascafico.altervista.org/publi<wbr>c/Screenshot_2017-05-19-18-40-<wbr>41.png</a><br>
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