Example #1
0
 def __init__(self, arr, scalarMultiplier=1.0, size=0):
     # assert arr.ndim <= 1
     self.diag = arr.copy() if arr is not None else None  # may be None, then n has to be provided
     self.scalarMultiplier = (
         scalarMultiplier
         if isscalar(scalarMultiplier)
         else asscalar(scalarMultiplier)
         if type(scalarMultiplier) == ndarray
         else scalarMultiplier[0, 0]
         if scipyInstalled and SP.isspmatrix(scalarMultiplier)
         else raise_except()
     )
     self.size = arr.size if size == 0 else size
     if arr is None:
         self.isOnes = True
Example #2
0
def Diag(x, *args, **kw):
    if isscalar(x):
        return x
    else:
        return diagonal(asfarray(x) if x is not None else x, *args, **kw)
Example #3
0
 def __rmul__(self, item):
     return self.__mul__(item) if isscalar(item) else self.__mul__(item.T).T