read strike and dip

General Module Function

The read strike and dip module is used to visualize sampled locations. It places a disk, oriented by strike and dip, at each sample location. Each disk is probable and can be colored by a picked color, by Id, or by data value. If an ID is present, such as a boring ID, then there is an option to place tubes between connected disks, or those disks with similar Id’s.

Strike and dip refer to the orientation  of a geologic feature. The strike is a line representing the intersection of that feature with the horizontal plane (though this is often the ground surface). Strike is represented with a line segment parallel to the strike line. Strike can be given as a compass direction (a single three digit number representing the azimuth) or basic compass heading (e.g. N, E, NW).   

The dip gives the angle of descent of a feature relative to a horizontal plane, and is given by the number (0°-90°) as well as a letter (N,S,E,W, NE, SW, etc.) corresponding to the rough direction in which feature bed is dipping.

NOTE: We do not support the Right-Hand Rule, therefore all dip directions must have the direction letter(s).

Module Input Ports

Module Output Ports

Properties and Parameters

The Properties window is arranged in the following groups of parameters:

 

Strike and Dip File Example

Discussion of Strike and Dip Files

Strike and dip files consist of 3D coordinates along with two orientation values called strike and dip. A simple disk is placed at the coordinate location and then the disk is rotated about Z to match the strike and then rotated about Y to match the dip. An optional id and data value can be used to color the disk.

Format:

You may insert comment lines in C Tech Strike and Dip (.sad) input files. Comments can be inserted anywhere in a file and must begin with a '#’ character.

Strike can be defined in the following ways :

1)   For strikes running along an axis:

N, S, NS, SN are all equivalent to 0 or 180, and will always have a dip to E or W

E, W, EW, WE are all equivalent to 90 or 270, and will always have a dip to N or S

NE, SW are both equivalent to 135 or 315, and can have a dip specified to N, S, E, or W

NW, SE are both equivalent to 45 or 225, and can have a dip specified to N, S, E, or W

 

2)   For all other strikes: any compass direction between 0 and 360 degrees can be specified, with the dip direction clarifying which side of the strike is downhill.

 

Dip can be defined only in degrees in the range of 0 to 90.0 followed by a direction such as 35.45E

 

There is no required header for this file type.

Each line of the file must contain:

X, Y, Z, Strike, Dip, ID (optional), and Data (optional).

 

NOTE: The ID can only contain spaces if enclosed in quotation marks (ex "ID 1").

 

EXAMPLE FILE

#  x          y           z       strike      dip

51.967  10.948 26.127 35.205   59.8031E

50.373  33.938 26.127 13.048  68.49984E

51.654  60.213 26.127 139.18  76.74215E

50.529  83.203 26.127 213.50  62.94599E

64.358  76.634 11.471 114.23  80.38694E

66.430  33.938 -6.849  41.421  60.38837E

75.901  50.360 -21.505 60.141 72.88960E

72.943   7.663 -21.505   5.255  65.51247E

101.90  30.654 -72.801 77.675  65.9524E

81.339  50.360 -43.489 244.95  70.7079E

72.263  73.350 -21.505 82.929  69.3159E

89.897  73.350 -61.809 31.531  55.6570E

END

 

FILE TAGS:

The file tags for the ASCII file formats (shown in Bold Italics) are discussed below with a representative example. They are given in the appropriate order. If you need assistance creating software to write these file formats, please contact support@ctech.com.

 

COORD_UNITS "ft"
    Defines the coordinate units for the file.  These should be consistent in X, Y, and Z.

 

END  (this is optional, but should be used if any lines will follow your actual data lines)