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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 | remeq*] 

{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} 
*remeq* 
{indent}Remove triangles of equal z values. Thus the triangulation will only go between lines of unequal height.{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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