added resolution study script

bin/resolution.py

@@ -0,0 +1,45 @@
+import sys
+import numpy as np
+from   interp.grid.delaunay import dgrid
+from   interp.tools import baker_exact_3D
+from   interp.tools import rms
+from progressbar import *
+
+attempts = 1000
+widgets = ['submit jobs: ', Percentage(), ' ', Bar(), ' ', ETA()]
+results = {}
+
+for r in xrange(2,8):
+  resolution = float("1e%d" % r)
+
+  v = np.random.random((resolution,3))
+  q = [baker_exact_3D(x) for x in v]
+  g = dgrid(v,q)
+
+
+  pbar = ProgressBar(widgets = widgets, maxval = attempts)
+  pbar.start()
+  start = time.time()
+
+  errors = []
+  i = 0
+  outside = 0
+  while i < attempts:
+    try:
+      X = np.random.random((1,3))[0]
+      e = g.run_baker(X)['final'] - baker_exact_3D(X)
+      errors.append(e)
+      pbar.update(i+1)
+      i += 1
+    except Exception as e:
+      # print X, i, resolution
+      outside += 1
+
+  pbar.finish()
+  print "\n"
+  end = time.time()
+
+  rmserror = rms(errors)
+  results[resolution] = rmserror
+
+  print resolution, rmserror, outside, end - start