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beachball: try to fix some plotting issues, apparently caused by missing normalization and large numbers #2400

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Oct 9, 2019
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beachball: try to fix some plotting issues, apparently caused by missing normalization and large numbers #2400

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10 changes: 9 additions & 1 deletion obspy/imaging/beachball.py
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Original file line number Diff line number Diff line change
Expand Up @@ -146,7 +146,7 @@ def beach(fm, linewidth=2, facecolor='b', bgcolor='w', edgecolor='k',
# Return as collection
plot_dc_used = True
if mt:
(t, n, p) = mt2axes(mt)
(t, n, p) = mt2axes(mt.normalized)
if np.fabs(n.val) < EPSILON and np.fabs(t.val + p.val) < EPSILON:
colors, p = plot_dc(np1, size, xy=xy, width=width)
else:
Expand Down Expand Up @@ -1016,6 +1016,14 @@ def __init__(self, *args):
else:
raise TypeError("Wrong size of input parameter.")

@property
def normalized(self):
return MomentTensor(self.mt_normalized, self.expo)

@property
def mt_normalized(self):
return self.mt / np.linalg.norm(self.mt)

@property
def xx(self):
return self.mt[0][0]
Expand Down