Paulo van Breugel <p.vanbreu...@gmail.com> writes: > Hi Glynn and Rainer > > Happy to see this exchange of ideas. It would be great if this could be > implemented. Do you think it is useful I make a feature request on the bug > tracker (with link to this email thread) so the idea doesn't get lost?
Yes please - I think that would be useful. Thanks, Rainer > > > > > On Fri, May 17, 2013 at 4:38 PM, Glynn Clements > <gl...@gclements.plus.com>wrote: > >> >> Rainer M. Krug wrote: >> >> > > One option is to modify round() to take a second argument (defaulting >> > > to 1), and have it return the first argument rounded to the nearest >> > > multiple of the second. The return type would be that of the second >> > > argument, i.e. round(x,1) rounds to the nearest integer and returns an >> > > integer, round(x,1.0) rounds to the nearest integer and returns a >> > > float, round(x,1e-3) would round to 3 decimal places (i.e. the nearest >> > > multiple of 0.001), etc. >> > >> > Sounds like a sensible approach without adding to many new >> > functions. But I would actually split the two, i.e. have two more >> > arguments, where one specifies the type, >> > and the other one the number of decimals to round to, i.e. >> > >> > round(x, 0, "I") would be the default, rounding to whole number and >> > return an integer >> >> That interface isn't possible. r.mapcalc doesn't have a string type, >> and there's no way that a function's return type can depend upon the >> value of a parameter. >> >> -- >> Glynn Clements <gl...@gclements.plus.com> >> _______________________________________________ >> grass-dev mailing list >> grass-dev@lists.osgeo.org >> http://lists.osgeo.org/mailman/listinfo/grass-dev >> <#secure method=pgpmime mode=sign> -- Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology, UCT), Dipl. Phys. (Germany) Centre of Excellence for Invasion Biology Stellenbosch University South Africa Tel : +33 - (0)9 53 10 27 44 Cell: +33 - (0)6 85 62 59 98 Fax : +33 - (0)9 58 10 27 44 Fax (D): +49 - (0)3 21 21 25 22 44 email: rai...@krugs.de Skype: RMkrug _______________________________________________ grass-dev mailing list grass-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-dev
