Hi Martin,<br><br><div class="gmail_quote">2013/1/27 Martin Koppenhoefer <span dir="ltr"><<a href="mailto:dieterdreist@gmail.com" target="_blank">dieterdreist@gmail.com</a>></span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>the sense in OSM is perfectly clear and defined in the osm wiki:<br>
power=station describes a substation for high voltage.<br>
power=sub_station is a substation for transforming medium to low<br>
voltage. This is also defined in the wiki.<br></blockquote><div>This discussion shows there's a little doubt about the correctness of this business.<br> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
why should we create a situation where you will no more be able to map<br>
substations if you don't know the voltage? There is really no<br>
advantage from excluding mappers.<br></blockquote><div>That wasn't my idea.<br><br>If mappers see a substation, they can map a substation in OSM, power=substation.<br>But if they can't determine the voltage, they're not required to put this information in their upload instead of publishing wrong data.<br>
<br>Putting two tags instead of one allows people to act like that.<br> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
fine. You can do this. But it isn't necessary to keep this in mind to<br>
map substations. Never had a problem distinguishing power=station from<br>
power=sub_station.<br></blockquote><div>How can you be sure the distinction you made is right if voltage isn't mandatory in the equation?<br><br>If all kind of substation are mapped with power=substation, the set could just incomplete because we'll sometimes lack the voltage tag but existing data is obviously right.<br>
If the distinction is made on the power tag value, mistakes are easier to be made.<br><br> </div>I've got an answer from aliponte this morning. I'll ask him if I can copy/paste his whole message here as for not extracting sentences from their context.<br>
<br>Cheers.<br></div><br clear="all"><br>-- <br><b>François Lacombe</b><br><br>francois dot lacombe At telecom-bretagne dot eu<br><a href="http://www.infos-reseaux.com" target="_blank">http://www.infos-reseaux.com</a><br>