def ppf( self, x ):
self.check()
if len( self.cdf_values ) != 0:
xx, cdf = self.x_values, self.cdf_values
else:
xx, cdf = self.x_values, self.cdf( self.x_values )
ppf_mfn_line = MFnLineArray( xdata = cdf, ydata = xx )
return ppf_mfn_line.get_values( x )
def ppf( self, x ):
self.check()
if len( self.cdf_values ) != 0:
xx, cdf = self.x_values, self.cdf_values
else:
xx, cdf = self.x_values, self.cdf( self.x_values )
ppf_mfn_line = MFnLineArray( xdata = cdf, ydata = xx )
return ppf_mfn_line.get_values( x )
def _get_pdf_array( self ):
# get the normed histogram implemented in the base class YMBHist
h, b = self.normed_hist
b_cen = ( b[1:] + b[:-1] ) / 2.
mask = ( h != 0. )
h = h[mask]
b_cen = b_cen[mask]
b = hstack( [min( b ), b_cen, max( b )] )
h = hstack( [0, h, 0] )
h = h / trapz( h, b )
p = MFnLineArray( xdata=b, ydata=h )
return p.get_values( self.x_array )
