if (lc->num > 0) // if the histogram has data then iterate else skip
{
double width_change_ratio = ((double) old_bin_width) / ((double) new_bin_width);
if (lc->num > 0) // if the histogram has data then iterate else skip
{
double width_change_ratio = ((double) old_bin_width) / ((double) new_bin_width);