[GRASS-SVN] r57862 - grass/trunk/gui/wxpython/docs

[svn_grass at osgeo.org]

Author: turek
Date: 2013-09-29 13:55:48 -0700 (Sun, 29 Sep 2013)
New Revision: 57862

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wx.iscatt: manual

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+<!-- meta page description: wxGUI Interactive Scatter Plot Tool-->
+<!-- meta page index: wxGUI -->
+
+<h2>DESCRIPTION</h2>
+
+<em>Interactive Scatter Plot Tool</em> allows to analyze group of raster maps. 
+    The tool is integrated into <em><a href="wxGUI.iclass.html">
+    Supervised Classification Tool (wx.iclass) </a></em> (see the screen shot bellow). 
+    Also it is possible to launch it from Map Display Window 
+    (Analyze map → Interactive Scatter Plot Tool). 
+
+The main idea of the tool is that everything is linked together 
+(scatter plots together and mapwindow with the scatter plots).
+
+The main feature of the tool is the interactivity, which allows user to: 
+<ul>
+  <li> work with multiple plots, which represents multiple raster bands combinations.
+  </li>
+  <li> highlight plotted points in open scatter plots according to currently 
+       chosen pixels for classes by it's training areas (supported only in wx.iclass)
+  </li>
+  <li> be able to define areas in plots and the tool will highlight pixels in 
+       map display window and corresponding points in other plots
+  </li>
+  <li> plot of confidence ellipses
+  </li>
+</ul>
+
+<h2>TOOL CONTROLS LAYOUT</h2>
+
+<center>
+<br>
+<img src="wxGUI_iscatt.png" border="1" alt="Interactive Scatter Plot Tool">
+<br><br>
+</center>
+
+If editing mode is activated (the green polygon tool in toolbar), the areas which were selected 
+in the scatter plots are highlighted. In the image you can see this area for scatter plot of bands B_6 B_7 inside the ellipse. 
+Opacity and color of the selected area can be set in settings. The area corresponds to the active class (in this case clouds). 
+Selected areas are subset of areas, which belongs to the category.
+<p>
+In the editing mode it is possible to select certain area by the polygon, which can be created and edited by tools in editing toolbar. 
+After the area is selected, we can include or exclude it into active category by clicking on the first (plus) respectively 
+second (minus) tool in the editing toolbar. In mapwindow corresponding pixels are shown by the class raster representing 
+selected areas in scatter plots. In this case we can see clouds class raster (blue), forest class raster (green) and 
+water class raster (red).
+
+<h2>NOTES</h2>
+
+The tool can analyze only integer (CELL) rasters.
+
+It works with 8 bit range smoothly. 
+The tool is capable of processing data up to 12 bit range, however it is not recommended open many scatter plots in 12/11 bit mode.
+It could require significant amount of memory and plot rendering time can be longer.
+Analyzing of raster data with higher range is not recommended.   
+The raster range can be lowered using <em><a href="r.rescale.html">r.rescale</a></em>.
+
+<p>
+
+<h2>KNOWN ISSUES</h2>
+
+Selection of areas in mapwindow is currently supported only if the tool was launched from 
+<em><a href="wxGUI.iclass.html">Supervised Classification Tool (wx.iclass) </a></em>
+
+<h2>SEE ALSO</h2>
+
+<em>
+  <a href="wxGUI.html">wxGUI</a><br>
+  <a href="wxGUI.components.html">wxGUI components</a>
+  <a href="r.rescale.html">r.rescale</a><br>
+</em>
+
+<p>
+See also the
+user <a href="http://grasswiki.osgeo.org/wiki/WxGUI_Interactive_Scatter_Plot_Tool">wiki</a>
+page.
+
+<h2>AUTHOR</h2>
+
+Stepan
+Turek, <a href="http://grasswiki.osgeo.org/wiki/GRASS_GSoC_2013_GRASS_GIS_Interactive_Scatter_Plot_Tool">Google
+Summer of Code 2013</a> (mentor: Martin Landa)
+
+<p>
+<i>$Date$</i>


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