Set the data-derived metrics. The metric_spec is defined in Metric Lists.
By default, the data-derived metrics are set to match the function list metrics whenever they are changed. The data-derived metrics corresponding to any visible exclusive metric or inclusive metric that has a data-derived flavor, are set with visibility corresponding to the logical or of the visibility setting for those two.
Static metric settings are copied to the data-derived metrics. If the metric name is not in the list, the metric name is appended to the list.
If metric_spec is omitted, the current data-derived metrics setting is displayed.
A list of all the available metric-name values for the experiments loaded can be obtained with the data_metric_list command.
If the metric_spec has any errors, it is ignored, and the data-derived metrics are left unchanged.