r3.null(1)	       Grass User's Manual	       r3.null(1)



NNAAMMEE
       rr33..nnuullll	- Modifies the NULL values of _m_a_p.

       _(_G_R_A_S_S _3_D _P_r_o_g_r_a_m_)

SSYYNNOOPPSSIISS
       rr33..nnuullll [[sseettnnuullll==_v_a_l_[_-_v_a_l_]_[_,_v_a_l_[_-_v_a_l_]_,_._._._]]]  [[nnuullll==_d_o_u_b_l_e]]
       ggrriidd33 == _g_3_d_-_m_a_p

   PPaarraammeetteerrss::
       sseettnnuullll
	      The cell values specified in the range  are  to  be
	      set  to NULL values.  A range can be a single value
	      (e.g., 2.5) or multiple values (e.g.,  3.21-10.95).

       nnuullll   Value that the existing NULL values in _m_a_p are con-
	      verted to.  This applies only to existing NULL val-
	      ues,  and  not  to the NULLs created by the _s_e_t_n_u_l_l
	      argument.

       ggrriidd33  Name of the G3D map for which to modify null values


SSEEEE AALLSSOO
       _r_._n_u_l_l


AAUUTTHHOORRSS
       Roman  Waupotitsch, Michael Shapiro, Helena Mitasova, Bill
       Brown, Lubos Mitas, Jaro Hofierka

       _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					       r3.null(1)
