[GRASS-SVN] r50816 - grass/trunk/lib/python

[svn_grass at osgeo.org]

Author: hamish
Date: 2012-02-15 00:30:44 -0800 (Wed, 15 Feb 2012)
New Revision: 50816

Modified:
   grass/trunk/lib/python/core.py
Log:
fn which lets you know if it's a lat/long location or not, using a low-overhead method

Modified: grass/trunk/lib/python/core.py
===================================================================
--- grass/trunk/lib/python/core.py	2012-02-15 06:41:29 UTC (rev 50815)
+++ grass/trunk/lib/python/core.py	2012-02-15 08:30:44 UTC (rev 50816)
@@ -546,6 +546,19 @@
 
 # interface to g.region
 
+def locn_is_latlong():
+    """!Tests if location is lat/long. Value is obtained
+    by checking the "g.region -p" projection code.
+
+    @return True for a lat/long region, False otherwise
+    """
+    s = read_command("g.region", flags='p')
+    kv = parse_key_val(s, ':')
+    if kv['projection'].split(' ')[1] == '3':
+	return True
+    else:
+	return False
+
 def region():
     """!Returns the output from running "g.region -g", as a
     dictionary. Example: