.. _gwpy-cli-example-coherencegram:

############################
Simple coherence spectrogram
############################



.. code:: sh

   $ gwpy-plot coherencegram \
       --chan H1:GDS-CALIB_STRAIN H1:PEM-CS_ACC_PSL_PERISCOPE_X_DQ \
       --start 1126260017 \
       --duration 600 \
       --interactive

.. image:: coherencegram.png
   :align: center
   :alt: Simple coherence spectrogram