# Mathematica Curve Fitting With Uncertainties

I have a set of data points $\{\{x_1, y_1\}, \{x_2, y_2\} ... \}$ each with an uncertainty $\{\{dx_1, dy_1,\}, \{dx_2, dy_2\} ...\}$. Is there any way of fitting a nonlinear model to the data that incorporates the uncertainties on both $x$ and $y$? I know that you can use the Weights command to incorporate the uncertainties on the $y$ values, but I don't know how to get the $x$ uncertainties in there as well.

I have a set of data points $\{\{x_1, y_1\}, \{x_2, y_2\} ... \}$ each with an uncertainty $\{\{dx_1, dy_1,\}, \{dx_2, dy_2\} ...\}$. Is there any way of fitting a nonlinear model to the data that incorporates the uncertainties on both $x$ and $y$? I know that you can use the Weights command to incorporate the uncertainties on the $y$ values, but I don't know how to get the $x$ uncertainties in there as well.