Undefined function 'm_lldist' for input arguments of type 'double'.

Hi there, I have put the line of code below in with the rest of my code and this was flagged up with the question above.

driftdistance1 = m_lldist(lat1, lon1)*1000;

this error comes up however I can't see where i have gone wrong?

any help?

[Geoff Hayes]

Olly - you may want to visit the site http://www.eos.ubc.ca/~rich/map.html which seems to provide his mapping code. If you already have this package, then in the Command Window type

 which m_lldist -all

to see where in the MATLAB path this file can be found in. If not found, then add the folder/directory that has this file to your MATLAB search path.