Revision: 5722
http://matplotlib.svn.sourceforge.net/matplotlib/?rev=5722&view=rev
Author: jswhit
Date: 2008-07-09 05:04:06 -0700 (Wed, 09 Jul 2008)
Log Message:
-----------
added 3 projections to examples
Modified Paths:
--------------
trunk/toolkits/basemap/doc/users/mapsetup.rst
Added Paths:
-----------
trunk/toolkits/basemap/doc/users/cyl.rst
trunk/toolkits/basemap/doc/users/figures/cyl.py
trunk/toolkits/basemap/doc/users/figures/merc.py
trunk/toolkits/basemap/doc/users/figures/mill.py
trunk/toolkits/basemap/doc/users/merc.rst
trunk/toolkits/basemap/doc/users/mill.rst
Added: trunk/toolkits/basemap/doc/users/cyl.rst
===================================================================
--- trunk/toolkits/basemap/doc/users/cyl.rst (rev 0)
+++ trunk/toolkits/basemap/doc/users/cyl.rst 2008-07-09 12:04:06 UTC (rev
5722)
@@ -0,0 +1,10 @@
+.. _cyl:
+
+Equidistant Cylindrical Projection
+==================================
+
+The simplest projection, just displays the world in latitude/longitude
coordinates.
+
+.. literalinclude:: figures/cyl.py
+
+.. image:: figures/cyl.png
Added: trunk/toolkits/basemap/doc/users/figures/cyl.py
===================================================================
--- trunk/toolkits/basemap/doc/users/figures/cyl.py
(rev 0)
+++ trunk/toolkits/basemap/doc/users/figures/cyl.py 2008-07-09 12:04:06 UTC
(rev 5722)
@@ -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='cyl',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("Equidistant Cylindrical Projection")
+plt.savefig('cyl.png')
Added: trunk/toolkits/basemap/doc/users/figures/merc.py
===================================================================
--- trunk/toolkits/basemap/doc/users/figures/merc.py
(rev 0)
+++ trunk/toolkits/basemap/doc/users/figures/merc.py 2008-07-09 12:04:06 UTC
(rev 5722)
@@ -0,0 +1,18 @@
+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.
+# lat_ts is the latitude of true scale.
+# resolution = 'c' means use crude resolution coastlines.
+m = Basemap(projection='merc',llcrnrlat=-80,urcrnrlat=80,\
+ llcrnrlon=-180,urcrnrlon=180,lat_ts=20,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("Mercator Projection")
+plt.savefig('merc.png')
Added: trunk/toolkits/basemap/doc/users/figures/mill.py
===================================================================
--- trunk/toolkits/basemap/doc/users/figures/mill.py
(rev 0)
+++ trunk/toolkits/basemap/doc/users/figures/mill.py 2008-07-09 12:04:06 UTC
(rev 5722)
@@ -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='mill',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("Miller Cylindrical Projection")
+plt.savefig('mill.png')
Modified: trunk/toolkits/basemap/doc/users/mapsetup.rst
===================================================================
--- trunk/toolkits/basemap/doc/users/mapsetup.rst 2008-07-08 14:55:33 UTC
(rev 5721)
+++ trunk/toolkits/basemap/doc/users/mapsetup.rst 2008-07-09 12:04:06 UTC
(rev 5722)
@@ -24,7 +24,11 @@
are longer, more descriptive names. The class variable ``projection_params``
is a dictionary that provides a list of parameters that can be used to
define the properties of each projection. Following are examples that
-illustrate how to set up each of the supported projections.
+illustrate how to set up each of the supported projections. Note that
+many map projection possess one of two desirable properties - they can be
+equal-area (the area of features is preserved) or conformal (the shape of
+features is preserved). Since no map projection can have both at the same
+time, many compromise between the two.
.. toctree::
@@ -34,3 +38,6 @@
moll.rst
robin.rst
sinu.rst
+ cyl.rst
+ merc.rst
+ mill.rst
Added: trunk/toolkits/basemap/doc/users/merc.rst
===================================================================
--- trunk/toolkits/basemap/doc/users/merc.rst (rev 0)
+++ trunk/toolkits/basemap/doc/users/merc.rst 2008-07-09 12:04:06 UTC (rev
5722)
@@ -0,0 +1,10 @@
+.. _merc:
+
+Mercator Projection
+===================
+
+A cylindrical, conformal projection. Very large distortion at high latitudes,
cannot fully reach the polar regions.
+
+.. literalinclude:: figures/merc.py
+
+.. image:: figures/merc.png
Added: trunk/toolkits/basemap/doc/users/mill.rst
===================================================================
--- trunk/toolkits/basemap/doc/users/mill.rst (rev 0)
+++ trunk/toolkits/basemap/doc/users/mill.rst 2008-07-09 12:04:06 UTC (rev
5722)
@@ -0,0 +1,11 @@
+.. _mill:
+
+Miller Cylindrical Projection
+=============================
+
+A modified version of the mercator projection that avoids the polar
+singularity. Neither equal-area or conformal.
+
+.. literalinclude:: figures/mill.py
+
+.. image:: figures/mill.png
This was sent by the SourceForge.net collaborative development platform, the
world's largest Open Source development site.
-------------------------------------------------------------------------
Sponsored by: SourceForge.net Community Choice Awards: VOTE NOW!
Studies have shown that voting for your favorite open source project,
along with a healthy diet, reduces your potential for chronic lameness
and boredom. Vote Now at http://www.sourceforge.net/community/cca08
_______________________________________________
Matplotlib-checkins mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/matplotlib-checkins
