Phillip M. Feldman wrote: > Jeff Whitaker wrote: >> Phillip M. Feldman wrote: >>> Andrew Straw wrote: >>>> Jeff Whitaker wrote: >>>> >>>>> Dr. Phillip M. Feldman wrote: >>>>> >>>>>> Basemap offers many projections, but is missing two of the most >>>>>> useful ones: >>>>>> >>>>>> - For satellite applications, it would be helpful to have a "camera" >>>>>> projection, i.e., a projection that shows the Earth as viewed from a >>>>>> specified point in space. This would be a generalization of the >>>>>> current >>>>>> geostationary projection. >>>>>> >>>>> Philip: Don't think the proj4 lib supports this. >>>>> >>>> I think it's already in there -- see nsper, for near sided >>>> perspective. >>>> >>>> -Andrew >>>>
Philip: I've added the near-sided perspective projection to basemap svn - see the nsper_demo.py example. It only works if the earth is assumed to be a perfect sphere (no ellipsoids allowed). -Jeff >>>> >>> Hello Andrew- >>> >>> It does sound as thought nsper is exactly what I need, but when I >>> try to use it, I get the following error message: >>> >>> ValueError: 'nsper' is an unsupported projection. >>> The supported projections are: >>> >>> aeqd Azimuthal Equidistant >>> poly Polyconic >>> gnom Gnomonic >>> moll Mollweide >>> tmerc Transverse Mercator >>> nplaea North-Polar Lambert Azimuthal >>> gall Gall Stereographic Cylindrical >>> mill Miller Cylindrical >>> merc Mercator >>> stere Stereographic >>> npstere North-Polar Stereographic >>> geos Geostationary >>> vandg van der Grinten >>> laea Lambert Azimuthal Equal Area >>> mbtfpq McBryde-Thomas Flat-Polar Quartic >>> sinu Sinusoidal >>> spstere South-Polar Stereographic >>> lcc Lambert Conformal >>> npaeqd North-Polar Azimuthal Equidistant >>> eqdc Equidistant Conic >>> cyl Cylindrical Equidistant >>> omerc Oblique Mercator >>> aea Albers Equal Area >>> spaeqd South-Polar Azimuthal Equidistant >>> ortho Orthographic >>> cass Cassini-Soldner >>> splaea South-Polar Lambert Azimuthal >>> robin Robinson >>> >>> Phillip >> Philip: I think Andrew meant nsper is in proj4. I'll look into >> adding support for it in Basemap. >> >> -Jeff >> > Thanks! -- Jeffrey S. Whitaker Phone : (303)497-6313 Meteorologist FAX : (303)497-6449 NOAA/OAR/PSD R/PSD1 Email : jeffrey.s.whita...@noaa.gov 325 Broadway Office : Skaggs Research Cntr 1D-113 Boulder, CO, USA 80303-3328 Web : http://tinyurl.com/5telg ------------------------------------------------------------------------------ SOLARIS 10 is the OS for Data Centers - provides features such as DTrace, Predictive Self Healing and Award Winning ZFS. Get Solaris 10 NOW http://p.sf.net/sfu/solaris-dev2dev _______________________________________________ Matplotlib-devel mailing list Matplotlib-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-devel
