TO DO

	- Check results if NaN in the DEM --> seems to give strange transects for the min value.
	- In plot graph, I assumed that NODATA are data < 0. This need to be changed if we need to extract profiles with ocean data
	- Ameliorate the graph title by (i) using LaTeX fonts and (ii) removing the digits after the .
	- Make the code more efficient when run with several intermediary points (L367-369 in swathp)
	-...


	