> On Jan 30, 2015, at 6:51 PM, althio <althio.fo...@gmail.com> wrote: > > John Willis <jo...@mac.com> wrote: > >> Substance=gas >> Substance:detailed:multiphase_gas >> Substance:state=multi > > That is not coherent. Do you mean that (substance=gas) is for mainly > gas or gas-only? > If it is gas only (substance=gas), it can be multiple gaseous > products. But it is not multiphase. > And then state=gas, not state=multi. >
Sorry, I was thinking of gas as a product (as in natural gas), not a state of matter. I was thinking of substance=* as a category (water, fuel, oil, gas, coolant, etc etc State would be multi. > >>> substance=multi is about OK as a shorthand. Using multi -- instead of >>> actual values -- may also imply you are not going to give further >>> detailed tagging. >>> substance=multiphase is really awkward. >> >> I think it would be substance:detailed:multiphase_gas for a particular item, >> not as a general description. >> >> Otherwise, it is multi for the state or matter... Right? > > Right, multi for state. My previous proposals were: > > 1. > substance:state = * or substance:phase = * > values limited to list eg.: gas, liquid, solid (cables), slurry > (=liquid+solid particles), multi (=multiphase, mostly gas and liquid, > possibly particles) > > 2. > I advocated for > phase/state=multi or multiphase > substance=[multi-valued] eg. substance=oil;gas;water +1 Substance=* should be a category Substance:detailed=* exact value that is easily added by taggers substance:state=* one of the 3 states, along with multi and slurry. Solid is assumed to be pneumatic then? Javbw _______________________________________________ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
