WebFfit running modes

WebFfit has three running modes: Basic, Advanced, and Expert.

• The Basic mode is directed to those who want to perform a 1D fit of a function $y=f(p_1,p_2,...,p_n,x)$ where $y$ is the dependent variable, $x$ is the independent variable and $p_1,...,p_n$ are the fitting parameters. A $XY$ plot is produced according to the user settings.
• The Advanced mode makes possible to fit 2D functions in the form of $z=f(p_1,p_2,...,p_n,x,y)$ where $z$ is the dependent variable, $x$ is the $1^{\rm st}$ independent variable, $y$ is the $2^{\rm nd}$ independent variable, and $p_1,...,p_n$ are the fitting parameters. For each value of $y$ a three columns' table $x z Err_Z$ has to be introduced and a $XZ$ plot is produced according to the user settings.
• The Expert mode gives to possibility to fit function of the type
  
  $$z=f(p_1,p_2,...,p_n,x,y)$$
  
  
  where $z$ is the dependent variable, $x$ is the $1^{\rm st}$ independent variable, $y$ is the $2^{\rm nd}$ independent variable, and $p_1,...,p_n$ are the fitting parameters. Three columns' tables $x z Err_Z$ for $y$ values and/or $y z Err_Z$ for $x$ values can be included and both $YZ$ and $XZ$ plots are produced according to the user settings. Please note that PUsers can take full advantage of this fitting mode.