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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