On Tue, 14 Apr 2009 14:42:32 -0700, norseman wrote: > Grids are uniform! Same size, non-changing across whole backdrop. There > is nothing in uniform that says X==Y. Units along axis need not be same. > Corners don't even have to be 90degrees. (Spherical) But they must > measure as same size cells across the board. Just like any grid paper.
Except for log paper, log-log paper, normal-probability paper, and other non-uniform grids. http://en.wikipedia.org/wiki/File:Log_paper.svg Or Penrose tilings: http://en.wikipedia.org/wiki/Penrose_tiles > For those reading this that just said "AH-Hah!", Spherical (Lat./Long.) > is not measured in Cartesian (distance like feet or meter) but in angles > (like 7 and 1/2 minute USGS Quads). 7.5minutes of Longitude at the > equator does not have the same arc length as 7.5minutes at the poles. > But both are 7.5minutes and thus form a (polar) grid. ENOUGH OF THIS - > sorry for being long winded. > > Whoever wrote Tk was not crazy. Just didn't use a dictionary. Nor should they. "Grid" has technical meanings (note plural) that are not well-suited to a dictionary definition. I'm amused that Wiktionary gives one definition for grid as a rectangular array of uniformly sized squares or rectangles, and illustrated it with a curvilinear grid of non-uniform pieces! http://en.wiktionary.org/wiki/grid -- Steven -- http://mail.python.org/mailman/listinfo/python-list
