Conversion of irregular finite element grid data to regular grid for three-dimensional computer plotting

Three‐dimensional plotting provides a useful means for the illustration and interpretation of results from finite element simulation. The computer graphic packages usually available at computer centers, however, require data on regular grids and thus are not adaptable to isoparametric finite elements, which are combinations of various shapes and sizes of trapezoids. By using the basis functions, a method is presented for the estimation of regular grid values from irregular gridded data for plotting purposes.