%% $Date: 2012-07-06 17:42:54#$
%% $Revision: 148 $
\index{clay\_1}
\algdescgeneral{clay\_1}
%
{ %%%%%% Algorithm name %%%%%%
biophys\_indices (clay\_1 is one index calculated within the overall program)
}
%
{ %%%%%% Algorithm summary %%%%%%
Calculation of clay ratio (clay\_1)
}
%
{ %%%%%% Category %%%%%%
Biophysics - soil indices
}
%
{ %%%%%% Inputs %%%%%%
Narrow band multi- or hyperspectral imagery (ENVI standard image data) including channels close to the wavelengths of 2136nm, 2195nm and 2240nm.\bigskip
}
%
{ %%%%%% Outputs %%%%%%
Single band with clay\_1 values
}
%
{ %%%%%% Formula %%%%%%
\begin{displaymath}
clay\_1 = 0.5 * ( R_{2136} + R_{2240} ) - R_{2195}
\end{displaymath}
}
%
{ %%%%%% Author %%%%%%
DLR-DFD
}
%
{ %%%%%% References %%%%%% 

}
