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



NNAAMMEE
       rr33..mmkkddssppff  - Creates a display file from an existing grid3
       file according to specified threshold levels.

       _(_G_R_A_S_S _3_D _P_r_o_g_r_a_m_)

SSYYNNOOPPSSIISS
       rr33..mmkkddssppff     [[--qqff]]     ggrriidd33==_n_a_m_e     ddssppff==_n_a_m_e     [[lleevv--
       eellss==_v_a_l_u_e_[_,_v_a_l_u_e_,_._._._]]]	     [[mmiinn==_v_a_l_u_e]]      [[mmaaxx==_v_a_l_u_e]]
       [[sstteepp==_v_a_l_u_e]] [[ttnnuumm==_v_a_l_u_e]]

DDEESSCCRRIIPPTTIIOONN
       Creates a display file from an existing grid3 file accord-
       ing  to specified threshold levels.  The display file is a
       display list of polygons that represent isosurfaces of the
       data  volume.   If  specific  _l_e_v_e_l_s are given, additional
       optional parameters are ignored.  _M_i_n or _m_a_x may  be  used
       alone or together to specify a sub-range of the data.  The
       _s_t_e_p parameter is given precedence over _t_n_u_m.

   FFllaaggss::
       --qq     Suppress progress report & min/max information

       --ff     Use flat shading rather than gradient


   PPaarraammeetteerrss::
       ggrriidd33  Name of an existing 3dcell map

       ddssppff   Name of output display file

       lleevveellss List of thresholds for isosurfaces

       mmiinn    Minimum isosurface level

       mmaaxx    Maximum isosurface level

       sstteepp   Positive increment between isosurface levels

       ttnnuumm   Number of isosurface threshold levels Default: 7


EExxaammppllee::
       With grid3 data (_p_h_d_a_t_a) in the range 3-7, we only want to
       see  isosurface	values	for  the range 4-6.  Any of these
       commands will produce the same results:


       r3.mkdspf phdata dspf=iso min=4.0 max=6.0 tnum=5
       r3.mkdspf phdata dspf=iso levels=4.0,4.5,5.0,5.5,6.0
       r3.mkdspf phdata dspf=iso min=4.0 max=6.0 step=0.5


NNOOTTEE
       Currently the grid3 file must  be  in  the  user's  mapset
       since the display files being created are specific to par-
       ticular grid3 files and are contained in directories under
       them.   We  should create a mechanism where users may make
       display files from others' grid3 files without  having  to
       copy them to their mapset.

AAUUTTHHOORR
       Bill Brown, bbrown@gis.uiuc.edu

       _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.mkdspf(1)
