I think there is an issue when using arrowh with another File Exchange matlab code, export_fig (found at http://www.mathworks.com/matlabcentral/fileexchange/23629-export-fig) when exporting in pdf.
The exported figure has some weird white lines. Export_fig works for other plots, so I was wondering if it due to the arrowhead file.
Just a few comments:
1) It would be nice if 'location' of the arrows was done in a more sophisticated way. Sometimes (especially in solutions of ODEs) the points forming the trajectory cluster at one end. The code ends up placing the arrow not in the desired middle of the trajectory. Perhaps a re-scaling of the points of the trajectory so the arrow can be fitted in the middle?
2) Is there a way to avoid the re-scaling of the arrowheads when the axes of the figure are changed?