<h2><img src="js/resources/images/16x16/edit.png" style="margin: 0px 10px 0px 0px;"/> Constructing a New Parameter</h2>
<p>
To construct a new parameter from the existing ones use <b><i>Create/Modify Parameters</i></b> module.  
<b><i>Drag</i></b> the parameter[s] from the Parameter Tree and <b><i>drop</i></b>  
it onto the <b><i>Construct Parameter</i></b> area.
</p><br/>
<img class="centered" src="help/images/derived1.png">
<br/>
<p>
In the example above the parameters  <b><i>bx_gse</i></b> and <b><i>by_gse</i></b> are displayed in the  
text area as the unique AMDA parameter identifiers <b><i>imf(0)</i></b> and <b><i>imf(1)</i></b>.
</p>
<p>While constructing you may use different components from the <b><i>Tools For Parameter Construction</i></b> -
for example  - <b><i>Constants</i></b>:<br/><br/> 
<img class="centered" src="help/images/derived2.png"><br/> 
<p>
To combine  different AMDA parameters which possibly have different sampling times
you have to specify new parameter sampling  (or <b><i>Time Step</i></b>).
Depending on original samplings, AMDA parameters used in the expression will be averaged or interpolated to create 
new parameter with the requested time resolution.
AMDA parameter's sampling times as well as valid globalStart/globalStop intervals
are displayed in the tooltip window shown when the mouse is over the parameter name 
in Parameters tree.
</p>
<p>After clicking the <b>Save</b> button new parameter is added to the <b><i>Derived 
Parameters</i></b> tree.
From now you can treat it (plot, download, data mining) as if it were real one. 
</p>
<p>
<img align="left" src ="help/images/derived3.png" style="margin: 0px 15px 0px 0px;"/>
You may group your parameters in the folders:</br>
use context menu which is opened on right mouse click 
on any folder node of the Derived Parameters  tree.<br/><br/>
To edit, rename, delete derived parameter use context menu opened on right mouse click
on the parameter node.
</p>