2次元構造格子を出力する。
call cg_iric_write_sol_grid2d_coords_withgridid(fid, gid, x, y, ier)
ier = cg_iRIC_Write_Sol_Grid2d_Coords_WithGridId(fid, gid, x, y);
cg_iRIC_Write_Sol_Grid2d_Coords_WithGridId(fid, gid, x, y)