Le 27. 07. 18 à 18:51, Richard Welty a écrit : > but practically it's probably not a good idea in mapping, where i think > we should be using local units in an unambiguous manner.
nothing prevent a editor nor a site to show "volt" next to the textbox for voltage value nor to show "km/h or mph" next to the textbox for maxspeed depending of the location. it only needed to have something to tell data user if a tag have only one unit or if the unit varies according to location (in this case, we need again a schema to store default value (in this case unit) somewhere with a link with osm location). Le 27. 07. 18 à 18:52, Philip Barnes a écrit : > On 27/07/2018 16:20, marc marc wrote: >> I agree maybe with the exeption of case like maxspeed > And maxheight and maxwidth. I agree that it'll be easy to not include those tag, at least to start. it's why voltage is a very good usecase to start with it :) > > On 7/27/18 11:20 AM, marc marc wrote: >> I agree maybe with the exeption of case like maxspeed >> >> François voltage is a good usecase to open an issue to the whised app. >> >> Le 27. 07. 18 à 14:19, Andrew Hain a écrit : >>> My own preference is to have no (zero) units in the database, decimals >>> where wanted (maxwidth=2.2) and unit management support in editors. >>> >>> -- >>> Andrew >>> ------------------------------------------------------------------------ >>> *From:* Warin <61sundow...@gmail.com> >>> *Sent:* 27 July 2018 12:27:04 >>> *To:* tagging@openstreetmap.org >>> *Subject:* Re: [Tagging] Let's get (quite) rid of units and their >>> multiples in OSM values >>> On 27/07/18 21:11, Martin Koppenhoefer wrote: >>>> sent from a phone >>>> >>>>> On 26. Jul 2018, at 21:26, François Lacombe <fl.infosrese...@gmail.com> >>>>> wrote: >>>>> >>>>> I don't want to break things but only improve them, all the best >>>> one issue with using only one unit for a tag is that they can’t always be >>>> transformed without rounding. E.g. maxspeed=55mph cannot be converted to >>>> kph without losing information >>>> >>>> Also, shorter notations are better readable, hence reduce the likeliness >>>> of errors not noted. >>>> >>>> On the other hand, I agree in the example of voltage it would make it >>>> easier for queries to use the same unit. (you still can make queries, but >>>> they are more complicated if you have to take units into account) >>>> >>>> >>> Unfortunately not everyone uses the same units... heights are in meters, >>> feet .. depending on where you come from or what activity you follow. >>> >>> Voltages are in volts so the same units... but multiplies are common for >>> high voltages .. no one uses 33000 volts .. they all use 33 kv. >>> If you stipulate that all voltages have to be in kv then 115 v becomes >>> 0.115 kv, 240 v becomes 0.24 kv and 415 v becomes 0.415 kv .. >>> that is not how people talk about these things. >>> >>> >>> >>> _______________________________________________ >>> Tagging mailing list >>> Tagging@openstreetmap.org >>> https://lists.openstreetmap.org/listinfo/tagging >>> >>> >>> _______________________________________________ >>> Tagging mailing list >>> Tagging@openstreetmap.org >>> https://lists.openstreetmap.org/listinfo/tagging >>> >> >> _______________________________________________ >> Tagging mailing list >> Tagging@openstreetmap.org >> https://lists.openstreetmap.org/listinfo/tagging > > _______________________________________________ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
