.. include:: images.rst

Data Display
------------

This page provides a description of the FrDisplay tool. Further
documentation on the FrDisplay tool is available at the following links:

-  `http://www.virgo.lnl.infn.it/Wiki/index.php/FRDISPLAY <http://www.virgo.lnl.infn.it/Wiki/index.php/FRDISPLAY>`__
-  :download:`VirgoWeek_16Nov11_FrDisplay.pdf <documents/VirgoWeek_16Nov11_FrDisplay.pdf>`

Overview
~~~~~~~~~~~~~

The FrDisplay tool enables the plotting of spectrograms, spectra and
waveforms from data contained in frame files. It wraps the considered
frame files and Baudline, a software developed for data visualization in
the time-frequency domain (see
`http://www.baudline.com/ <http://www.baudline.com/>`__). FrDisplay can
also be used to list the channels available in the considered frames,
see this page: `How to dump the frame file
contents <#how-to-dump-the-frame-file-contents>`__.

A graphical overview of the FrDisplay tool is provided by the following
image:

| 

Examples
~~~~~~~~~~~~~

The following command lines are examples of how to use the FrDisplay
tool (see `here <http://lappweb.in2p3.fr/virgo/FrameL/FrDoc.html>`__ for
the meaning of PROC and ADC):

.. code-block:: bash

      - FrDisplayPROC -t H1:LDAS-STRAIN -i H-H1_LDAS_C02_L2-955609344-128.gwf
      - FrDisplayPROC -t G1:DER_DATA_H -i G-G1_RDS_C01_L3-991247*.gwf
      - FrDisplayADC -t V1:Sc_OB_Gr_Coil1 -i V-raw-986188050-150.gwf
      - FrDisplayADC -t "V1:Sc_OB_Gr_Coil1 V1:Sc_OB_tyCorr" -i V-raw-986188050-150.gwf

| The complete list of options is available at the links reported above
  in this page or at the following path:

| ``$HOME_WAT/tools/frdisplay/README.*``