Dakota Reference Manual: annotated

| Dakota Reference Manual Version 6.15 Explore and Predict with Confidence

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annotated

Selects annotated tabular file format for experiment data

## Topics

This keyword is related to the topics:

- file_formats

## Specification

Alias: none

Argument(s): none

Default: annotated format

## Description

An annotated tabular file is a whitespace-separated text file with one leading header row of comments/column labels. For experiment data files, each subsequent row contains an experiment ID, followed by data for configuration variables, observations, and/or observation errors, depending on context.

Default Behavior

By default, Dakota imports tabular experiment data files in annotated format. The `annotated` keyword can be used to explicitly specify this.

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.

## Examples

Import an annotated experimental data file containing a header row, leading exp_id column, and experiment data in a calibration study

    responses
      ...
      scalar_data_file 'shock_experiment.dat'
        annotated

Example data file with two measured quantities, three experiments:

    %exp_id     velocity    stress
    1       18.23       83.21
    2       34.14       93.24
    3       22.41       88.92