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



NNAAMMEE
       rr33..mmkkddssppff  - Creates a display file from an existing grid3 file accord-
       ing 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   [[lleevveellss==_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 according to speci-
       fied 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  isosur-
       face  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 particular grid3 files and are con-
       tained 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)
