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{alias:trg}
h2. Name

*trg* — Triangulate point data

h2. Syntax
{panel:|borderStyle=solid|borderWidth=1|bgColor=#FFFFAA}

*trg* \[*rlf | inl | fau*] 

{panel}

h2. Description

Creates a triangle mesh from input points. The triangulation is of Delaunay type which tries to optimize the triangle with respect to equal sides. 

h2. Arguments

{indent}No argument. Triangulate the input data. Only the points are honoured.{indent} 
*inl* 
{indent}Convert a seismic inline to a triangulated seismic section.{indent} 
*rlf x | y | z sca* _scalefactor_ 
{indent}Turn the scalar values into x | y | z coordinates as a relief using scalefactor to control the expansion.{indent} 
*fau* _faultlines_ 
{indent}Make triangulated polydata in workspace _faultlines_ within the fault polygon if the points are ordered counterclockwise. Otherwise it will be outside the fault polygon.{indent} 

h2. Examples

h3. Ex.1: Triangulation towards faults

{noformat:|borderWidth=1|bgColor=#eeeeee}
        # Gridding of welldata and closed stick faults
        xwi sel              ;# select and raise current window if hidden
        wmp name {Geocap Closed Stick Faults} ; # window name
        set datapath [file join $Geocap::geocapdir data]
        vie def ini          ;# viewport default and initiate
        rea $datapath/csf_wells.vtk  ;# read well data
        ssc                  ;# self scale
        poi                  ;# display points
        col whi              ;# white colour
        poi val              ;# display point values
        mhi csf_wells        ;# save in high
        rea $datapath/csf_faults.vtk ;# read faults
        col red              ;# red colour
        pol                  ;# polygon display
        mhi csf_fau          ;# save in high
        d2                   ;# 2d mode
        dra win              ;# draw windows frame
        sta Welldata and closed stick faults   ;# stack text
        col gre              ;# select green colour
        tx2 lle              ;# 2d text
        tx2 ule txt {Gridding is in progress ..... Wait}
        mlo csf_wells        ;# move down well data
        grp 88 88 trg csf csf_fau   ;# grid welldata, triangulate closed stick faults
        d3                   ;# 3d mode
        upd d                ;# downwards view
        z                    ;# erase screen
        scaz 4               ;# scale_in_z, turn off by: scaz off
        ssc                  ;# self scale
        acm n 12 nor sma     ;# colour map
        mhi trgdata          ;# save in high the result model data
        mlo closedGenFaults  ;# move down closed stick faults with values
        col red              ;# red colour
        pot .5               ;# tube with size
        mlo csf_wells        ;# move low well data
        col mag              ;# magenta
        poi                  ;# display points
        cco                  ;# colour code
        tx2 lle sha col whi txt {Generated horizon model} ;# 2d text
        mlo trgdata          ;# move low the result
{noformat}

The above example produces this image.

!att:_img_ref^cmd_trg.png!
_Triangulated grid model to model fault traces_

h2. See also

[filt|filt - Filter algorithms] _tri_, [grp|grp - Grid points and lines] _trg_, [mak|mak - Make datasets] _tris_
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