Dips > Data Processing
The Process Data option in the Analysis menu allows you to save a processed version of the current Dips file. To save a processed Dips file:
Select Processed Data from the Analysis menu. You will see a dialog allowing you to configure how the file is written. Make your selections and select OK.
You can then save the file with a standard Save As dialog.
The processed file will have the following properties, according to your selections in the Processed Dips File dialog:
Orientation Format
The user can save the processed data in any one of the four Orientation Formats available in Dips (Trend / Plunge , Dip / DipDirection , Strike / DipRight , Strike / DipLeft). This will determine the format of ALL data in the two Orientation Columns of the processed file.
Declination
The Declination in the processed file is ZERO. All of the data has been offset by the declination (if any) recorded in the original file.
Traverses
There are NO active Traverses in the processed file. If the original file contained Traverse information, this will be saved in the processed file in comment form only. The Traverse Column will automatically be saved as an Extra Column in the processed file. To preserve bias correction information in the processed file, select the "Multiply quantity column by Terzaghi weighting" checkbox in the Processed Dips File dialog (see below for details).
You may also save the Terzaghi weighting information in its own column, by selecting the "Terzaghi weighting" checkbox. The Terzaghi weighting column will simply be an Extra Column in the processed file.
Quantity Column
If Traverses were present in the original file, the bias correction information can be preserved by selecting the "Multiply quantity column by Terzaghi weighting" checkbox in the Processed Dips File dialog. This will multiply the values in the Quantity Column by the weights of each pole, so that UNWEIGHTED Contour and Rosette plots for the processed file will actually reflect the WEIGHTED data concentrations. The Quantity Column title will be Quantity*W in this case.
This is the only way to preserve the bias correction information in the processed file. NOTE: if a Quantity Column was not present in the original file, it will automatically be created when you use this option.
If the "Multiply quantity column by Terzaghi weighting" checkbox is selected, then you may preserve the original Quantity Column by selecting the "Original quantity column" checkbox. This will save the original Quantity Column as an Extra Column in the processed file.
Set Column
If Sets were defined in the original file, the Set Column can be saved in the processed file as an Extra Column, by selecting the "Set ID" checkbox. This preserves the Set ID information ONLY. All other Set information (i.e. window limits, mean planes) is NOT saved in the processed file.
If you are saving the Set Column, a NEGATIVE Set ID can be used to identify "wrapped data" in a given Set, by selecting the "Negative Set ID for wrapped data" checkbox. NOTE that the pole orientation of data saved with a negative Set ID is the UNALTERED ORIENTATION!!! This option is an aid for post-processing applications, and it is left to the user to convert the data. For example, for mean orientation calculation outside of Dips, the user must calculate the orientation of the upper (negative) pole when the Set ID is negative (i.e. plunge = – plunge , trend = trend + 180).
Extra Columns
All Extra Columns of the original file are automatically saved in the processed file, and will appear AFTER the optional Extra Columns described above.