Stephane Raynaud wrote: > Hi, > > it seems that pyproj.Proj does not take into account the "towgs84" > optional parameter. > Here is what I simply tried: > > from mpl_toolkits.basemap import * > lonref = -3. > latref = 47. > > kwproj = dict(proj="lcc", a=6378249.2, b=6356515., x_0=600000., > y_0=200000., > lon_0="2d20'14.025", lat_0="46d48'", lat_1="45d53'56.108", > lat_2="47d41'45.652") > print pyproj.Proj(**kwproj)(lonref, latref) > > kwproj.update(towgs84="-168,-60,+320") > print pyproj.Proj(**kwproj)(lonref, latref) > > Both transforms give the same result. > > Try the same parameters with "cs2cs" changes the results as expected. > Did I miss something? > > -- > Stephane Raynaud
Stephanie: All the arguments you pass to the Proj instance were used. I don't pretend to understand what's supposed to be happening here, but I guess you are mis-specifying or mis-interpreting some of the proj arguments. The command-line version of proj gives the same answer: echo "-3.0 47.0" | proj +proj='lcc' +units=m +a=6378249.2 +lon_0="2d20'14.025" +y_0=200000.0 +b=6356515.0 +x_0=600000.0 +lat_2="47d41'45.652" +lat_1="45d53'56.108" +lat_0="46d48'" 194411.84 236007.03 echo "-3.0 47.0" | proj +proj='lcc' +units=m +a=6378249.2 +lon_0="2d20'14.025" +y_0=200000.0 +b=6356515.0 +x_0=600000.0 +lat_2="47d41'45.652" +lat_1="45d53'56.108" +lat_0="46d48'" +towgs84="-168,-60,+320" 194411.84 236007.03 -Jeff -- 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 ------------------------------------------------------------------------------ This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
