SF.net SVN: matplotlib:[6146] trunk/toolkits/basemap/doc/users

[<js...@us...>]

Revision: 6146
          http://matplotlib.svn.sourceforge.net/matplotlib/?rev=6146&view=rev
Author:   jswhit
Date:     2008-10-04 13:09:52 +0000 (Sat, 04 Oct 2008)

Log Message:
-----------
add new projections

Modified Paths:
--------------
    trunk/toolkits/basemap/doc/users/figures/robin.py
    trunk/toolkits/basemap/doc/users/mapsetup.rst

Added Paths:
-----------
    trunk/toolkits/basemap/doc/users/figures/gall.py
    trunk/toolkits/basemap/doc/users/figures/mbtfpq.py
    trunk/toolkits/basemap/doc/users/figures/vandg.py
    trunk/toolkits/basemap/doc/users/gall.rst
    trunk/toolkits/basemap/doc/users/mbtfpq.rst
    trunk/toolkits/basemap/doc/users/vandg.rst

Added: trunk/toolkits/basemap/doc/users/figures/gall.py
===================================================================
--- trunk/toolkits/basemap/doc/users/figures/gall.py	                        (rev 0)
+++ trunk/toolkits/basemap/doc/users/figures/gall.py	2008-10-04 13:09:52 UTC (rev 6146)
@@ -0,0 +1,17 @@
+from mpl_toolkits.basemap import Basemap
+import numpy as np
+import matplotlib.pyplot as plt
+# llcrnrlat,llcrnrlon,urcrnrlat,urcrnrlon
+# are the lat/lon values of the lower left and upper right corners
+# of the map.
+# resolution = 'c' means use crude resolution coastlines.
+m = Basemap(projection='gall',llcrnrlat=-90,urcrnrlat=90,\
+            llcrnrlon=-180,urcrnrlon=180,resolution='c')
+m.drawcoastlines()
+m.fillcontinents(color='coral',lake_color='aqua')
+# draw parallels and meridians.
+m.drawparallels(np.arange(-90.,91.,30.))
+m.drawmeridians(np.arange(-180.,181.,60.))
+m.drawmapboundary(fill_color='aqua') 
+plt.title("Gall Stereographic Projection")
+plt.savefig('gall.png')

Added: trunk/toolkits/basemap/doc/users/figures/mbtfpq.py
===================================================================
--- trunk/toolkits/basemap/doc/users/figures/mbtfpq.py	                        (rev 0)
+++ trunk/toolkits/basemap/doc/users/figures/mbtfpq.py	2008-10-04 13:09:52 UTC (rev 6146)
@@ -0,0 +1,14 @@
+from mpl_toolkits.basemap import Basemap
+import numpy as np
+import matplotlib.pyplot as plt
+# lon_0 is central longitude of projection.
+# resolution = 'c' means use crude resolution coastlines.
+m = Basemap(projection='mbtfpq',lon_0=0,resolution='c')
+m.drawcoastlines()
+m.fillcontinents(color='coral',lake_color='aqua')
+# draw parallels and meridians.
+m.drawparallels(np.arange(-90.,120.,30.))
+m.drawmeridians(np.arange(0.,360.,60.))
+m.drawmapboundary(fill_color='aqua') 
+plt.title("McBryde-Thomas Flat Polar Quartic Projection")
+plt.savefig('mbtfpq.png')

Modified: trunk/toolkits/basemap/doc/users/figures/robin.py
===================================================================
--- trunk/toolkits/basemap/doc/users/figures/robin.py	2008-10-04 07:16:10 UTC (rev 6145)
+++ trunk/toolkits/basemap/doc/users/figures/robin.py	2008-10-04 13:09:52 UTC (rev 6146)
@@ -8,7 +8,7 @@
 m.fillcontinents(color='coral',lake_color='aqua')
 # draw parallels and meridians.
 m.drawparallels(np.arange(-90.,120.,30.))
-m.drawmeridians(np.arange(0.,420.,60.))
+m.drawmeridians(np.arange(0.,360.,60.))
 m.drawmapboundary(fill_color='aqua') 
 plt.title("Robinson Projection")
 plt.savefig('robin.png')

Added: trunk/toolkits/basemap/doc/users/figures/vandg.py
===================================================================
--- trunk/toolkits/basemap/doc/users/figures/vandg.py	                        (rev 0)
+++ trunk/toolkits/basemap/doc/users/figures/vandg.py	2008-10-04 13:09:52 UTC (rev 6146)
@@ -0,0 +1,14 @@
+from mpl_toolkits.basemap import Basemap
+import numpy as np
+import matplotlib.pyplot as plt
+# lon_0 is central longitude of projection.
+# resolution = 'c' means use crude resolution coastlines.
+m = Basemap(projection='vandg',lon_0=0,resolution='c')
+m.drawcoastlines()
+m.fillcontinents(color='coral',lake_color='aqua')
+# draw parallels and meridians.
+m.drawparallels(np.arange(-80.,81.,20.))
+m.drawmeridians(np.arange(0.,360.,60.))
+m.drawmapboundary(fill_color='aqua') 
+plt.title("van der Grinten Projection")
+plt.savefig('vandg.png')

Added: trunk/toolkits/basemap/doc/users/gall.rst
===================================================================
--- trunk/toolkits/basemap/doc/users/gall.rst	                        (rev 0)
+++ trunk/toolkits/basemap/doc/users/gall.rst	2008-10-04 13:09:52 UTC (rev 6146)
@@ -0,0 +1,11 @@
+.. _gall:
+
+Gall Stereographic Projection
+=============================
+
+A stereographic, cylindrical projection that is neither equal-area
+or conformal.
+
+.. literalinclude:: figures/gall.py
+
+.. image:: figures/gall.png

Modified: trunk/toolkits/basemap/doc/users/mapsetup.rst
===================================================================
--- trunk/toolkits/basemap/doc/users/mapsetup.rst	2008-10-04 07:16:10 UTC (rev 6145)
+++ trunk/toolkits/basemap/doc/users/mapsetup.rst	2008-10-04 13:09:52 UTC (rev 6146)
@@ -6,7 +6,7 @@
 In order to represent the curved surface of the earth on a two-dimensional
 map, a map projection is needed. Since this cannot be done without
 distortion, there are many map projections, each with it's own advantages
-and disadvantages. Basemap provides 19 different map projections.
+and disadvantages. Basemap provides 22 different map projections.
 Some are global, some can only represent a portion of the globe. When
 a :class:`~mpl_toolkits.basemap.Basemap` class instance is
 created, the desired map projection must
@@ -47,6 +47,7 @@
     omerc.rst
     poly.rst
     mill.rst
+    gall.rst
     lcc.rst
     laea.rst
     stere.rst
@@ -55,3 +56,5 @@
     pstere.rst
     plaea.rst
     paeqd.rst
+    mbtfpq.rst
+    vandg.rst

Added: trunk/toolkits/basemap/doc/users/mbtfpq.rst
===================================================================
--- trunk/toolkits/basemap/doc/users/mbtfpq.rst	                        (rev 0)
+++ trunk/toolkits/basemap/doc/users/mbtfpq.rst	2008-10-04 13:09:52 UTC (rev 6146)
@@ -0,0 +1,10 @@
+.. _mbtfpq:
+
+McBryde-Thomas Flat Polar Quartic
+=================================
+
+A global equal-area projection.
+
+.. literalinclude:: figures/mbtfpq.py
+
+.. image:: figures/mbtfpq.png

Added: trunk/toolkits/basemap/doc/users/vandg.rst
===================================================================
--- trunk/toolkits/basemap/doc/users/vandg.rst	                        (rev 0)
+++ trunk/toolkits/basemap/doc/users/vandg.rst	2008-10-04 13:09:52 UTC (rev 6146)
@@ -0,0 +1,12 @@
+.. _vandg:
+
+van der Grinten Projection
+==========================
+
+A global projection once used by the National Geographic Society for world maps.
+Neither equal area or conformal, shows the world in a circle centered on
+the equator.
+
+.. literalinclude:: figures/vandg.py
+
+.. image:: figures/vandg.png


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