SurGe Detailed description

Detailed description

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SurGe consists of two basic programs files:

SurGe.exe enables:

to read files containing input objects (points, faults, polylines and / or boundaries) and to display them in graphical window
to transform (rotate and so on) coordinates of input objects (points, faults, polylines, boundaries)
to select parameters for interpolation / approximation and to run SURGEF.EXE
to define filter for input data (points XYZ)
to display raster color map or 3D view of resulting surface
to display shadowed color map or shadowed 3D view
to compute isolines and display them
to compute and display gradient lines
to blank grid outside the boundary
to perform some mathematical calculations with surfaces
using mouse and keyboard to digitize points, faults, polylines, boundaries and isolines
to define and display cross-sections through several surfaces
to read and write grid files compatible with Surfer (in ASCII format)
to write grid files in GRASS and ArcGIS ASCII format.
using special procedures (see SurGe Tutorial) to solve special tasks such as
- wedging out of layers
- preserving extrapolation trend in areas without data
- direct conversion of seismic reflection times into the structural depth of layer boundary
- creation of layer thickness maps and volume calculation

SURGEF.EXE has the following features:

Implements the method ABOS (Approximation Based On Smoothing). The ABOS is method for approximation (interpolation) of z-coordinates of irregularly spaced points XYZ by continuous function of two independent variables. Despite of the fact, there is approximation in the name of the method, ABOS can also provide exact interpolation. Description of the ABOS is in the User's manual.
Number of input points is limited only by available computer memory.
In addition to the points XYZ, spatial polylines can be used as an input to define surface shape.
Thanks to the interface enabling full control of the program, SURGEF.EXE can be called as an interpolation engine from any user application.
The program creates a matrix of real numbers, which represents surface at nodes of a grid. The number of the matrix elements is limited only by available memory, but with respect to an acceptable time of computation, a reasonable maximal number of nodes is about 6000000. It means that the maximal reasonable "resolution" of resulting map can be for example 3000 x 2000 (in such case the map with the size 3 x 2 meter will have the resolution 1 millimeter).