[R] MBA the h value?

[Clement LAUZIN]

Hello everybody,
 
 
I am trying different ways of interpolating a surface.
Now, I am trying to interpolate these values using the MBA package. In order to do it I am using the surface option of the package.
mba.surf(xyz, 20, 20, n = 1, m = 1, h = 8, extend=FALSE,
sp=FALSE, ...)
 
The function is giving me some results but not reliable at all.
Maybe it's due to the n,m and h values which are not corresponding to my data. 
I don't understand what should be the value of h. Even I read the article cited in the pdf.
Someone could maybe help me.Also what should be the value of n and m.
My data are pasted below corresponding to xyz. 
 
 
Thank you very much
Regards
 
 
Pierre
 

4.00 45 -83.94753324
4.00 50 -115.8679098
4.00 55 -134.7855557
4.00 60 -144.6370393
4.00 65 -148.7164562
4.00 70 -149.4758468
4.00 75 -148.641352
4.05 45 -104.1007536
4.05 50 -128.2620683
4.05 55 -141.8810486
4.05 60 -148.3151116
4.05 65 -150.2664062
4.05 70 -149.7559503
4.05 75 -148.1990977
4.10 45 -118.9805984
4.10 50 -136.721655
4.10 55 -146.0525858
4.10 60 -149.7327347
4.10 65 -149.9930389
4.10 70 -148.4927918
4.10 75 -146.3873601
4.15 45 -129.467342
4.15 50 -141.998465
4.15 55 -147.8625806
4.15 60 -149.343257
4.15 65 -148.2761684
4.15 70 -146.0179853
4.15 75 -143.5069876
4.20 45 -136.3899382
4.20 50 -144.6996352
4.20 55 -147.7834847
4.20 60 -147.526368
4.20 65 -145.433249
4.20 70 -142.6081123
4.20 75 -139.8085943