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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Arlindo, here is a list of projections for Antartica:<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>$ ls Coordinate\ Systems/Geographic\ Coordinate\
Systems/Antarctica/<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Australian Antarctic 1998.prj Deception Island.prj
Pointe Geologie Perroud 1950.prj<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Camp Area
Astro.prj
Petrels 1972.prj<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>The NAD27 is North America Datum of 1927 and is, in general, not
a good choice for projections of the world. The original maps that USGS created
for the United States were based on NAD27 and the CLARK1866 sphere and they
have been re-projected by USGS to NAD83 and the GRS80 sphere. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Projections for the world would fall into one of two categories:
Geographic and Projected.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> $ ls Coordinate\ Systems/Geographic\ Coordinate\
Systems/World/<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>ITRF 1988.prj ITRF 1991.prj ITRF 1994.prj ITRF
2000.prj WGS 1966.prj <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>ITRF 1989.prj ITRF 1992.prj ITRF 1996.prj ITRF
2005.prj WGS 1972 TBE.prj<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>ITRF 1990.prj ITRF 1993.prj ITRF 1997.prj NSWC
9Z-2.prj WGS 1972.prj and WGS 1984.prj<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>and<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>$ ls Coordinate\ Systems/Projected\ Coordinate\ Systems/world<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Aitoff (world).prj
Flat Polar Quartic (world).prj Sinusoidal (world).prj<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Behrmann
(world).prj
Fuller
(world).prj
Sphere-based<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Bonne
(world).prj
Gall Stereographic (world).prj The World from Space.prj<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Craster Parabolic
(world).prj Goode Homolosine
(Land).prj Times (world).prj<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Cube
(world).prj
Goode Homolosine (Ocean).prj Van der Grinten I (world).prj<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Cylindrical Equal Area (world).prj Hammer-Aitoff
(world).prj Vertical Perspective
(world).prj<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Eckert I
(world).prj
Loximuthal (world).prj
WGS 1984 PDC Mercator.prj<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Eckert II
(world).prj
Mercator
(world).prj
WGS 1984 Web Mercator (Auxiliary Sphere).prj<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Eckert III (world).prj
Miller Cylindrical (world).prj WGS 1984 Web Mercator.prj<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Eckert IV
(world).prj
Mollweide
(world).prj Winkel
I (world).prj<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Eckert V
(world).prj
Plate Carree (world).prj Winkel II
(world).prj<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Eckert VI
(world).prj
Polyconic
(world).prj Winkel
Tripel (NGS - world).prj<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Equidistant Conic
(world).prj Quartic Authalic
(world).prj<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Equidistant Cylindrical (world).prj Robinson (world).prj<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>John<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>John Huddleston, PhD<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Research Associate <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Cooperative Institute for Research in the Atmosphere<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Mail Stop 1375 @ CIRA<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Colorado State University<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Fort Collins, CO 80521<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>970-491-8602<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
arlindo.dasilva@gmail.com [mailto:arlindo.dasilva@gmail.com] <b>On Behalf Of </b>Arlindo
da Silva<br>
<b>Sent:</b> Thursday, November 12, 2009 8:36 AM<br>
<b>To:</b> Huddleston, John<br>
<b>Cc:</b> gradsusr<br>
<b>Subject:</b> Re: Another free shapefile for world maps<o:p></o:p></span></p>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>On Thu, Nov 12, 2009 at 9:05 AM, Huddleston, John <<a
href="mailto:Huddleston@cira.colostate.edu">Huddleston@cira.colostate.edu</a>>
wrote:<o:p></o:p></p>
<div>
<blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;
margin-left:4.8pt;margin-right:0in'>
<div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'>Arlindo,</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'>Please excuse this direct email to you,
the GrADS email list does not allow me to reply or send anything to the list.</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'>I downloaded the world.tar.bz2 file and
it does not contain a PRJ file. While the three DBF, SHP, and SHX files conform
exactly to the ESRI 1994 shapefile standard; the accuracy and precision of our
software has increased significantly since the standard was propagated.</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'>As such, it is important to know the
projection of the world maps.</span><o:p></o:p></p>
</div>
</div>
</blockquote>
<div>
<p class=MsoNormal><o:p> </o:p></p>
</div>
<div>
<p class=MsoNormal>You may need to contact the data producers directly about
this, it should be a simple matter to add a standard .prj file. However, on the
website it says:<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><o:p> </o:p></p>
</div>
</div>
<blockquote style='margin-left:30.0pt;margin-right:0in'>
<p class=MsoNormal><span class=apple-style-span><span style='font-size:13.5pt;
font-family:"Times","serif"'>The data is based upon a free map published
by <a href="http://www.terraspace.ru/">TerraSpace, Russia</a> as
referenced by <a
href="http://data.geocomm.com/editorspicks/data_world11.html">Geocommunity</a>.
I added Antarctica after Curt Mills pointed out that there was a missing
continent. Antartica's data came from the Digital Chart of the World and was <span
style='background:#FFFF66'>reprojected into NAD27 to agree with the rest of the
world.</span></span></span><o:p></o:p></p>
</blockquote>
<div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>I am not sure what NAD27 is, but I was assuming it was a
standard projection. Let me know if you find anything.<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><o:p> </o:p></p>
</div>
<div>
<p class=MsoNormal> Arlindo<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><o:p> </o:p></p>
</div>
</div>
<p class=MsoNormal>-- <br>
Arlindo da Silva<br>
<a href="mailto:dasilva@alum.mit.edu">dasilva@alum.mit.edu</a><o:p></o:p></p>
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