Updated various files needed to run pSIMS

Author: jchryssanthacopoulos

bin/trans_gidx.py

@@ -0,0 +1,58 @@
+#!/usr/bin/env python
+
+import sys
+from os.path import isfile, sep
+from numpy import double, floor
+
+def translate(lat, lon, latdelta, londelta):
+    latidx = int(floor((90. - lat) / latdelta + 1))
+    lonidx = int(floor((lon + 180.) / londelta + 1))
+
+    lat1 = 90. - latdelta * (latidx - 1)
+    lat2 = 90. - latdelta * latidx
+    lon1 = -180. + londelta * (lonidx - 1)
+    lon2 = -180. + londelta * lonidx
+
+    if lat > lat1 or lat < lat2 or lon < lon1 or lon > lon2:
+        raise Exception('Not in cell!')
+
+    return latidx, lonidx
+
+if len(sys.argv) != 6:
+    print 'Usage: trans_gidx.py latidx1 lonidx1 lat_delta1[,lon_delta1] lat_delta2[,lon_delta2] weathdir2'
+    sys.exit(1)
+
+latidx    = int(sys.argv[1])
+lonidx    = int(sys.argv[2])
+delta1    = [double(d) / 60. for d in sys.argv[3].split(',')] # arcminutes -> degrees
+delta2    = [double(d) / 60. for d in sys.argv[4].split(',')]
+weathdir2 = sys.argv[5]
+
+if len(delta1) == 1:
+    latdelta1 = londelta1 = delta1[0]
+else:
+    latdelta1, londelta1 = delta1
+if len(delta2) == 1:
+    latdelta2 = londelta2 = delta2[0]
+else:
+    latdelta2, londelta2 = delta2
+
+latrat, lonrat = latdelta2 / latdelta1, londelta2 / londelta1
+
+latd  = [0.5, 0, 1, 0, 1] # start at center
+lond  = [0.5, 0, 0, 1, 1]
+latd += [0.5 + i for i in [0,       0,      latrat, -latrat, latrat,  latrat, -latrat, -latrat]]
+lond += [0.5 + i for i in [lonrat, -lonrat, 0,       0,      lonrat, -lonrat,  lonrat, -lonrat]]
+
+lats = [90. - latdelta1 * (latidx - i) for i in latd]
+lons = [-180. + londelta1 * (lonidx - i) for i in lond]
+
+for i in range(len(lats)):
+    latidx2, lonidx2 = translate(lats[i], lons[i], latdelta2, londelta2)
+    latidx2, lonidx2 = '%03d' % latidx2, '%03d' % lonidx2
+    wfile = sep.join([weathdir2, latidx2, lonidx2, '%s_%s.psims.nc' % (latidx2, lonidx2)])
+    if isfile(wfile):
+        print latidx2 + sep + lonidx2
+        sys.exit(0) # success
+
+sys.exit(1) # failure