Corrections in the example contained  in the header of main function.
Corrections in the example contained  in the header of main function.

victortxa/fatiando,drandykass/fatiando,fatiando/fatiando,victortxa/fatiando,cmeessen/fatiando,rafaelmds/fatiando,santis19/fatiando,santis19/fatiando,mtb-za/fatiando,cmeessen/fatiando,drandykass/fatiando,fatiando/fatiando,mtb-za/fatiando,rafaelmds/fatiando