File Conversions

Instructions for converting between Clan (.cha), Elan (.eaf), .its and Datavyu (.opf) files. All the code on this page is in Fas-Phyc-PEB-Lab/Seedlings/Scripts_and_Apps/Github/seedlings/conversions

Converting an existing cha file to eaf.

Use the cha2eaf.py script to convert an existing cha file to eaf. If the output option (-o) is not specified, the script will create a new eaf with the input file name as default, in the current directory. The script can be used as:

usage: cha2eaf.py [-h] [-o OUTPUT] cha_file
cha2eaf.py: error: the following arguments are required: cha_file

e.g.
python cha2eaf.py 01_06_sparse_code.cha

Exporting a csv file from ELAN.

Below are the steps to export a csv file from ELAN that will be in the style of sparse code csv files. If the options section gets confusing, just follow along with the attached images.

1. Click file in the upper left corner.

2. Select Export as from the dropdown menu.

3. Select Tab-delimited text from the dropdown menu.

4. Check/Uncheck the following options (All of these are also shown in the picture, in case this is hard to follow):

   • Select (if not already selected) By Tier Names from the Select tiers section at the top. You should see a list of the usual chat file tiers (CXF, NOF, CHF, etc.).

   • Select Show only root tiers below the tier names window. This will hide away all the dependent tiers (such as %xdb@OLN)

   • Uncheck the default and block tiers (if these don't exist in your file, that is fine). The main point is that we are making sure that we are only taking tiers that have 3 letter names.

   • Under the Output options section, select Exclude participant names from output option.

   • Under the Include time column for section, check the boxes for Begin Time and End Time.

   • Under the Include time format section, check the box for msec option (which stands for milliseconds).

5. Click OK to export :) . You will get a text file of tab separated values.

6. The resulting file is still not a csv (comma separated values) file. Run the script awker.sh as ./awker.sh < newly_exported_tab_separated_file.txt. This is a short awk script that will turn the exported file you just obtained into a sparse code csv file that we have been using. PreviousAudio Processing

Main Elan Screen

File Dropdown Menu

Selecting Export Options

Converting an eaf (ELAN) file to a cha (CLAN) file.

The script can be used as:

usage: cha2eaf.py [-h] [-o OUTPUT] cha_file

Convert CHA (CLAN) file to EAF (ELAN) file

positional arguments:
  cha_file              The CHA file to be converted

optional arguments:
  -h, --help            show this help message and exit
  -o OUTPUT, --output OUTPUT
                        The output EAF file name. Optional, default is the input file name.

The result should be identical to the original chat file.