octave-divand 1.1.2+dfsg-6 (amd64 binary) in ubuntu lunar

 This package contains functions for performing multidimensional
 variational analysis in Octave, a scientific computation software.
 They allow the interpolation and analysis of observations on
 curvilinear orthogonal grids in an arbitrary high dimensional space
 by minimizing a cost function.
 .
 This Octave add-on package is part of the Octave-Forge project.