s.surf.krig(1)	       Grass User's Manual	   s.surf.krig(1)



NNAAMMEE
       ss..ssuurrff..kkrriigg

       Surface interpolation from site data via kriging

SSYYNNOOPPSSIISS
       ss..ssuurrff..kkrriigg

       ss..ssuurrff..kkrriigg --hheellpp

       ss..ssuurrff..kkrriigg     iinnppuutt=name     [zzddiimmeennssiioonn=index]    [zznnuu--
       mmeerriicc=index]
	   [zzssttrriinngg=index]   oouuttzz==name	 oouuttvvaarrzz==name  mmooddeell==name
	   [nnppooiinnttss==count]	[rraannggee==semivariogram	   range]
	   [ppoowweerr==exponetial power] [nnuuggggeett==semivariogram nugget]
	   [ssiillll==semivariogram sill] [mmaaxx__llaagg==max_lag]

DDEESSCCRRIIPPTTIIOONN
       Is missing.

   PPaarraammeetteerrss::
       iinnppuutt==_n_a_m_e
	      Name of input site map

       zzddiimmeennssiioonn==index
	   Index of dimension field if appropriate

       zznnuummeerriicc==index
	   Index of numeric field if appropriate

       zzssttrriinngg==index
	   Index of string field if appropriate

       oouuttzz==_n_a_m_e
	   Name of output z value raster map

       oouuttvvaarrzz==_n_a_m_e
	   Name of output z variance raster map

       oouuttvvaarrzz==_n_a_m_e
	   Name of output z variance raster map

       mmooddeell==_t_y_p_e
	   Type of semivariogram model to be used

	   options: power,spherical,exp,log,gaussian

       nnppooiinnttss==_v_a_l_u_e
	   Number of interpolation points

	   default: 12

       rraannggee==_v_a_l_u_e
	   Not used with log or power models

	   default: 1.0

       ppoowweerr==_v_a_l_u_e
	   Only for use with the power model

	   default: 1.0

       nnuuggggeett==_v_a_l_u_e
	   The variogram nugget variance

	   default: 0.0

       ssiillll==_v_a_l_u_e
	   The variogram sill scaled to the sample variance

	   default: 1.0

	mmaaxx__llaagg==_v_a_l_u_e
	   The max_lag is only used with the power model

	   default: 1000.0


NNOOTTEE
       You  have to play with the parameters to get a  reasonable
       result and not a segmentation violation


       At  least  one  of  the	options  zdimension  | znumeric |
       zstring	must  be  selected  and  supplied  with  a  valid
       (0-based) index value. This will contain the values of the
       spot heights.



AAUUTTHHOORRSS
       Chris Skelly

       School of Earth Sciences

       Macquarie Univerity

       North Ryde 2109 NSW Australia



       Darrel McCauley


       David D. Gray   09/2000



       _L_a_s_t _c_h_a_n_g_e_d_: _$_D_a_t_e_: _2_0_0_2_/_0_1_/_2_5 _0_5_:_4_5_:_3_5 _$



GRASS 5.0					   s.surf.krig(1)
