Data Formats

 

GSadjust can import data exported by ZLS (Burris) and Scintrex (CG-3, CG-5, CG-6) relative-gravity meters. Data from each of these meters is written in a space delimited text format.

 

When a data file is initially loaded, the appropriate menu option should be selected ("Load raw CG-3/CG-5 data", "Load CG-6 data", or "Load raw Burris data"). If additional data are loaded using the "Append survey to campaign" or "Append loop to survey" menu options, a dialog will be shown allowing the user to specify the data format.

 

 

Burris data is a space- or comma-delimited output file from the ZPARSE.exe program run on a Windows computer (if using the Palm field computer), or output from UltraGrav2 software (if using the Android field computer). The file read by GSadjust is the "single mode data" file.

 

The Burris file may be hand-edited to, for example, remove data from previous surveys. Care should be taken if the file is edited in Excel, which will typically result in a change in the date format (from YYYY-MM-DD to MM/DD/YYYY). The date format must be changed back to the original format if this is the case.

 

 

Scintrex data files are space delimited. The Scintrex file will typically have a header with information such as the meter operator and the serial number.

 

 

Scintrex CG-6 data can be logged internally in a format similar to CG-3/CG-5 data, or logged to a handheld field computer in Tsoft format. There is a specific menu import command for each format.

 

 

In addition to the meter-specific formats described above, generic data can be imported from a comma-delimited file. The columns must be in the following order:

 

STATION, LAT, LON, ALT, GRAV, SD, TILTX, TILTY, TEMP, TIDE, DUR, REJ, TIME, DEC.TIME, TERRAIN, DATE

 

 

Absolute gravity data can be imported from text files or directly from the *.project.txt files written by the 'g' processing software used by Micro-g Lacoste, Inc. gravity meters.