TXT Formatted Text Grid Import Options Dialog

Surfer can import Formatted Text Grid files.

Specify the Formatted Text Grid options in the Import Options dialog.

Skip Lines at Beginning of File

If the coordinate information or table of Z values does not start at the first line of the file, then you must specify the Number of lines to skip at beginning of file. Type a value representing the number of lines to skip in the Number of lines to skip at beginning of file field.

Non-Numeric or Missing Values

If a non-numeric or missing node is encountered during import, Surfer will input a user-defined value into the resulting grid. Type a number in the Value to use for non-numeric or missing nodes field to specify the value. The default value is the Surfer NoData (blanking or null) value, 1.70141E+38.

Grid Node Order

The Grid node order specifies whether the x-axis coordinates and y-axis coordinates advance per column or row. Click the X advances per column, Y advances per row or X advances per row, Y advances per column radio button that describes the format of the Formatted Text Grid file.

X Axis Coordinates

If the Formatted Text Grid file contains x-axis coordinates in the first row or column, click the Read X coordinates from first row/column of file data radio button.

If the file does not contain x-axis coordinate information, click the radio button next to X origin at. Next, type the minimum x-axis coordinate value in the X origin at field. Finally type the value by which the x-axis coordinate increases with row/column in the stepping by field.

Y Axis Coordinates

If the Formatted Text Grid file contains y-axis coordinates in the first row or column, click the Read Y coordinates from first row/column of file data radio button.

If the file does not contain y-axis coordinate information, click the radio button next to Y origin at. Next, type the minimum y-axis coordinate value in the Y origin at field. Finally type the value by which the y-axis coordinate increases with row/column in the stepping by field.

Expected File Format

The Expected file format preview provides a visual representation of the import option selections. The Expected file format field updates as the import options are changed. X-axis coordinate values are represented by X# in the Expected file format field. Y-axis coordinate values are represented by Y# in the Expected file format field. Z values are represented by Z##, where the first number is the corresponding x-axis coordinate, and the second number is the corresponding y-axis coordinate.