analysis: analysis::fitting_toolkit::linear_combination

def derivs ( self )

Compute the (trivial) derivatives for a linear combination

Reimplemented from fit.

Definition at line 747 of file fitting_toolkit.py.

00747                     :
00748         if self.firstpass: #may get used more than once if weights are not constant, but no need to recompute
00749             n=self.pointcount
00750             self.funcparams=zeros(self.param_count, self.atype)
00751             dd = zeros((n, self.param_count), self.atype)
00752             if self.arg_count==1:
00753                 x=self.xarray[0,:n]
00754             else:
00755                 x=self.xarray[:,:n]
00756             for i in range(self.param_count):
00757                 dd[:,i]=self.basis[i](i,x)
00758             self.saved_derivs=dd                    
00759         return self.saved_derivs
00760 
    ##