ELAN offers the possibility to merge two tiers. There are several reasons why you would want to merge tiers. For instance, one could think of a situation where two people are transcribing different parts of the same media file. If both people have finished, the transcriptions can be merged via Section 188.8.131.52 for more information about that.. You can also merge tiers across multiple eaf files, using the option. See
To get the annotations of both tiers onto one tier, use. In the dialog window select the two tiers to merge and click . Set the criteria for merging the annotations. When checking the option Only process overlapping annotations, ELAN only merges annotations that have the same value. In this case, the values of both annotations are not concatenated, so the created annotation contains the value only once.
Enter a name for the new tier and select the desired tier type or add a new type.
Concatenate the values of overlapping annotations and
click to create the new tier. Now all annotations of the
original tiers are on the new tier. Overlapping annotations are merged to one
annotation. The merged annotations begins where the first of the overlapping annotations
begins and ends where the last one ends. The values of the overlapping annotations are
concatenated. Optionally you can specify the value the merging annotations should
Merging tiers can also be used to get some time statistics of the combination of two tiers. Again, select Value in the following time format and the desired time format. Finally click . Overlapping annotations are merged and the annotation's value is the total duration of the overlapping annotations. (More about annotations statistics can be found in Section 2.18.2.), select the two tiers to merge and click . After setting the criteria, entering a name for the new tier and selecting the desired tier type, select
As a final example, consider an audio recognizer (see Section 2.4.3) creating not one but multiple tiers. If you want to put the annotations of those tiers on one tier, you could use the option to achieve this.