trend.tcl

This example shows how to use surface as trend and how to modify trend with fault lines.

Here is the image of the resulting surface:

Pic 1. surface obtained from points with trend and 2 fault lines

Pic 2. surface obtained from points with trend and 2 fault lines

This result was obtained with "examples/surfit/surfs/surface_ineq.tcl" script.

#
# This script was generated with funner v2.1beta (www.gridding.info)

# 
# load plugins
# 
load libsurfit[info sharedlibextension]

# remove all previous data and gridding rules
clear_data 

# set name of surface
set map_name "map_trend" 

# set solver
set_solver "cg" 

# set tolerance for solver
set tol 1e-005 

##
## load initial data 
##
 
# load points from text file 
pnts_read "7points.txt" "7points"  
 
# load curve from text file 
curv_read "1fault2.txt" "1fault2"  
 
# load curve from text file 
curv_read "1fault.txt" "1fault"  
 
# load surface from surfit datafile 
surf_load "func.func" "test_func"  
 
##
## construct grid 
##
grid_get -10 10 0.2 -10 10 0.2 
 
##
## create gridding rules
##

# resulting surface at points = points values 
points "7points" 

# resulting surface looks like trend surface 
trend 1 0.2 "test_func" 

# fault line 
fault "1fault"  

# fault line 
fault "1fault2"  

##
## run gridding algorithm
##
surfit 

##
## save results 
##

# unload grid from memory
grid_unload 

# save surface to surfit datafile 
surf_save "trend.dat" "map_trend"

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surfit: open source gridding and contouring software.