Merge pull request #2009 from RafaelNH/kurtosis_review

Upgrade on DKI implementations

dipy/data/__init__.py

@@ -208,6 +208,13 @@ def gtab_getter():
     return gtab_getter
 
 
+def get_tdesign():
+    """Reads the N directions of a t-design"""
+    N = 45
+    file = pjoin(DATA_DIR, 'tdesign' + str(N) + '.txt')
+    return np.loadtxt(file)
+
+
 get_3shell_gtab = _gradient_from_file("gtab_3shell.txt")
 get_isbi2013_2shell_gtab = _gradient_from_file("gtab_isbi2013_2shell.txt")
 get_gtab_taiwan_dsi = _gradient_from_file("gtab_taiwan_dsi.txt")

dipy/data/files/tdesign45.txt

@@ -0,0 +1,45 @@
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