In this PR, a post-processing program is written to interpolate field from GLL points into equidistant points within elements in the specified direction. E.g. If the original field is on GLL points on x,y and z direction, and user specifies the interpolation direction (hom_dir) to be 'x', then the field will be interpolated onto grid with GLL points on y and z direction but equidistant points on x direction (locally) within each element. Note that the positions of elements' vertices remain the same. Hence, this program will interpolate fields onto equidistant mesh only when the elements' sizes on the specified homogeneous direction are the same.
In this PR, a post-processing program is written to interpolate field from GLL points into equidistant points within elements in the specified direction. E.g. If the original field is on GLL points on x,y and z direction, and user specifies the interpolation direction (hom_dir) to be 'x', then the field will be interpolated onto grid with GLL points on y and z direction but equidistant points on x direction (locally) within each element. Note that the positions of elements' vertices remain the same. Hence, this program will interpolate fields onto equidistant mesh only when the elements' sizes on the specified homogeneous direction are the same.