.. MuniView - User's manual

   Copyright 2012 David Motl
   
   Permission is granted to copy, distribute and/or modify this document under the 
   terms of the GNU Free Documentation License, Version 1.2 or any later version published 
   by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and 
   no Back-Cover Texts.

   $Id: graph_view.rst,v 1.1 2015/07/06 08:24:15 dmotl Exp $

.. _graph-view:

Graph preview (Light curves, etc.)
==================================

When you open the Lister window (F3 key) on a C-Munipack output file, 
like a light curve, a track-list curve, a mag-dev curve, an airmass curve,
the window is opened in the "Image or multimedia" display mode and the data
are presented in a form of a graph. If the file is very big (>16 MB), you 
have to switch the display mode manually ('4' key).

.. figure:: images/graph_view.png
   :align: center
   :alt: Lister window with a light curve

   TC's Lister window in the "Image or multimedia" display mode 
   presenting a light curve generated by C-Munipack.

The scale of the chart is always chosen in such a way that the entire
data are shown in the window. At present, only one column can be displayed
at a time.

The descriptive information about the CCD image is presented at the
top of the window. The following data are shown: name of the file format(1) and
optical filter name (2), if applicable.


Displaying additional data sets
-------------------------------

When a file is opened, the first data set is selected. For example, 
the first data set in the light curve is the V-C value. To display other data sets:

- Press '+' key on the numeric pad to select the next data set.

- Press '-' key on the numeric pad to select the previous data set.


Changing the symbol size
------------------------


When a file is opened, the default symbol size is selected. 
You can change the size of the symbols:

- Press '*' key on the numeric pad to increase the size of symbols.

- Press '-' key on the numeric pad to decrease the size of symbols.


File properties
---------------

Basic properties are displayed at the top of the window. To show more information,
click on the image using the right mouse button to open the context menu. In the
menu, select the 'Properties' item, a new dialog appears. In this dialog, 
information about the file are presented.


Copying image to clipboard
--------------------------

Click on the graph using the right mouse button to open the context menu. 
In the menu, select the 'Copy to clipboard' item.
