Right, I just checked my good old school atlas, and they do exactly that: there is a little comment to the right of the scale bar that reads "scale at the equator".
Cheers, Ben ----- Original Message ----- > Re: [Gvsig_english] scalebar in EPSG 4326 (wgs 84 World 2D) > > Hello, > > Benjamin's comment makes a lot of sense as usual. > > Nevertheless, a gvSIG view in EPSG:4326 still shows a value for the > scale denominator, which I presume refers to the scale along the > Equator. > > I think a map without a scale in somewhat incomplete. > > If your map is in EPSG:4326, I recommend to add a scale bar with a > little comment by its side that says something like: "Approximate > scale, valid along the Equator and along meridians" (because the > length of the Equator is about the same as the length of every > meridian, with an error of perhaps 0.5% or less, which is not very > important) > > Regards, > Juan Lucas Domínguez Rubio > --- > > Prodevelop SL, Valencia (España) > > Tlf.: 96.351.06.12 -- Fax: 96.351.09.68 > http://www.prodevelop.es > --- > > > De: [email protected] en nombre de Benjamin > Ducke Enviado el: lun 23/05/2011 17:45 > Para: Users and Developers mailing list > Asunto: Re: [Gvsig_english] scalebar in EPSG 4326 (wgs 84 World 2D) > > > > > Hi Carsten -- > > EPSG 4326 is an unprojected geodetic system. > Since no projection to cartesian coordinate space is done, > the scale of the displayed data varies, depending on where you > measure it -- that's why there are no globes with scale bars > printed on them ;). All you could do is draw an estimated > scale bar yourself in an external program and then import > that into your gvSIG map layout. > > Alternatively, you can project your data into a cartesian > system, such as UTM and work with that. > > Ben > > ----- Original Message ----- > > Hello, > > > > I'd like to add a scalebar in a map created from a view using the > > EPSG 4326 (WGS84 word 2D) Projection. > > Unfortunately, the scalebar function does not work as correct as in > > some other projections. I searched for a solution in the faq, but > > did not find a result. > > Also the scale seems to be announced wrong. (Europe in DIN-A4 is > > like > > 1:1). Is there a possibility to solve this problem? > > Regards Carsten Mischka > > > > _______________________________________________ Gvsig_internacional > > mailing list > > [email protected] > > http://listserv.gva.es/cgi-bin/mailman/listinfo/gvsig_internacional > > > ------ Files attached to this email may be in ISO 26300 format (OASIS > Open Document Format). If you have difficulty opening them, please > visit http://iso26300.info for more information. > > _______________________________________________ Gvsig_internacional > mailing list > [email protected] > http://listserv.gva.es/cgi-bin/mailman/listinfo/gvsig_internacional > > _______________________________________________ Gvsig_internacional > mailing list > [email protected] > http://listserv.gva.es/cgi-bin/mailman/listinfo/gvsig_internacional ------ Files attached to this email may be in ISO 26300 format (OASIS Open Document Format). If you have difficulty opening them, please visit http://iso26300.info for more information. _______________________________________________ Gvsig_internacional mailing list [email protected] http://listserv.gva.es/cgi-bin/mailman/listinfo/gvsig_internacional
