Selects free-form tabular file format for experiment data




  • Alias: None

  • Arguments: None

  • Default: annotated format


A freeform tabular file is whitespace-separated text file with no leading header row and no leading columns. For experiment data files, each row contains data for configuration variables, observatiions, and/or observation errors, depending on context.

Default Behavior

By default, Dakota imports tabular experiment data files in annotated format. Specify freeform to instead select this format.

Usage Tips

  • Prior to October 2011, calibration and surrogate data files were in free-form format. They now default to annotated format, though freeform remains an option.

  • When importing tabular data, a warning will be generated if a specific number of data are expected, but extra is found and an error generated when there is insufficient data.


Import a free-form experimental data file containing raw experiment data in a calibration study

  scalar_data_file 'shock_experiment.dat'

Example data file with two measured quantities, three experiments:

18.23  83.21
34.14  93.24
22.41  88.92