The script timelessExtractEulerAngles.py is part of the TIMEleSS tools. It converts results from GrainSpotter to a format which MTeX can read. Therefore, it extracts the Euler angles (phi1, Phi, phi2) from the .log file created by GrainSpotter and writes them into a text file.

timelessExtractEulerAngles -h
usage: timelessExtractEulerAngles [options] input.log

Reads an indexing log file and generates a set of Euler angles for plotting
with MTex This is part of the TIMEleSS project http://timeless.texture.rocks

positional arguments:
  input                 Path and file name of the indexing log file (required)

optional arguments:
  -h, --help            show this help message and exit
  -o OUTPUT, --output OUTPUT
                        Output file (.txt file). Default is euler_angles.txt

The output will be a text file with a list of Euler angles. First column is phi1, second column is Phi, third column is phi2.

Example for 5 grains:

-31.88 273.49 206.05
-55.09 133.91 157.65
83.39 235.30 204.46
-47.58 78.99 149.71
-60.87 17.28 33.07