Martin Desruisseaux ha scritto: > Andrea Aime a écrit : >> Sorry, what are grade units? Radians? Tried to find it on a dictionary, >> but failed (grade has meaning for school grade, grade as an evaluation >> of some school work, and so on, but nothing dealing with geometry...) > > http://en.wikipedia.org/wiki/Grad_%28angle%29 > > A circle is 400 grades, or 360 degrees, or 2pi radians... Grades were invented > at a time where some peoples where pushing for "everything in base 10" (angle, > time, etc.) as an extension of the metric system, but it never had great > success.
Funny, never knew such a unit existed. It has probably never been used in italian carthography, and it makes also for a very confusing translation in italian, too... degree -> "grado", see how it looks like "grade"? In fact, the biggest english/italian dictonary I have (more than 2000 pages) does not have that geometric meaning for "grade" at all... Cheers Andrea ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ Geotools-gt2-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users
