[QGIS Commit] r9464 - in docs/trunk/english_us/user_guide: . plugins_screenies

[svn_qgis at osgeo.org]

Author: dassau
Date: 2008-10-09 07:15:38 -0400 (Thu, 09 Oct 2008)
New Revision: 9464

Added:
   docs/trunk/english_us/user_guide/plugins_screenies/interpolate_dialog.png
   docs/trunk/english_us/user_guide/plugins_screenies/interpolate_idw.png
Modified:
   docs/trunk/english_us/user_guide/plugins_interpolation.tex
   docs/trunk/english_us/user_guide/plugins_screenies/Makefile
Log:
wrote a section for the interpolation plugin

Modified: docs/trunk/english_us/user_guide/plugins_interpolation.tex
===================================================================
--- docs/trunk/english_us/user_guide/plugins_interpolation.tex	2008-10-09 09:33:08 UTC (rev 9463)
+++ docs/trunk/english_us/user_guide/plugins_interpolation.tex	2008-10-09 11:15:38 UTC (rev 9464)
@@ -4,8 +4,55 @@
 % comment out the following line:
 \updatedisclaimer
 
+The Interplation plugin allows to interpolate a TIN or IDW raster layer from a vector 
+point layer loaded in the QGIS canvas. It is very simple to handle and provides 
+functionalities as shown in Figure \ref{fig:interpolate_dialog}.
 
+\begin{itemize}
+\item \textbf{Input vector layer}: Select vector point layer loaded in the QGIS canvas.
+\item \textbf{Interpolation attribute}: Select attribute column used for interpolation or 
+enable \checkbox{Use Z-Coordinate} checkbox.
+\item \textbf{Interpolation Method}: Select interpolation method \selectstring{Triangulated Irregular 
+Network (TIN)}{\ldots} or \selectstring{Inverse Distance Weighted (IDW)}{\ldots}.
+\item \textbf{Number of columns/rows}: define number colums and.rows for the output raster file
+\item \textbf{Output file}: Define a name for the output raster file
+\end{itemize}
 
+\begin{figure}[ht]
+   \begin{center}
+   \caption{Interpolation Plugin \nixcaption}\label{fig:interpolation_dialog}\smallskip
+   \includegraphics[clip=true, width=9cm]{interpolate_dialog}
+\end{center}  
+\end{figure}
+
+\begin{enumerate}
+  \item Start QGIS and load the \filename{elevp.csv} CSV table with elevation points in the QGIS 
+  canvas using the delimited text plugin as described in Section \ref{label_dltext}. 
+  \item Load the Interpolation plugin in the Plugin Manager (see Section 
+  \ref{sec:load_core_plugin}) and click on the \toolbtntwo{interpolation}{Interpolation} 
+  icon which appears in the QGIS toolbar menu. The Interpolation plugin dialog appears as shown in Figure \ref{fig:interpolation_dialog}.
+  \item Select \selectstring{elevp}{\ldots} as input vector and column \filename{ELEV} for 
+  interpolation.
+  \item Select \selectstring{Triangular interpolation}{\ldots} as interpolation method, define 
+  3663 cols and 1964 rows (this is equivalent to a 1000 meter pixel resolution) as raster 
+  output filename \filename{elevation\_tin}.
+  \item Click \button{Ok}.
+  \item Double click \filename{elevation\_tin} in the map legend to open the Raster Layer Properties 
+  dialog and select \selectstring{Pseudocolor}{\ldots} as Color Map in the \tab{Symbology} tab. Or you 
+  can define a new color table as described in Section \ref{label_rasterprop}.
+\end{enumerate}
+
+In Figure \ref{fig:interpolation_idw} you see the IDW interpolation result with a 366x196 (10 km) resolution 
+for the \filename{elevp.csv} data visualized using the Pseudocolor color table. The processing takes a couple 
+of minutes.
+
+\begin{figure}[ht]
+   \begin{center}
+   \caption{Interpolation of elevp data using IDW method \nixcaption}\label{fig:interpolation_idw}\smallskip
+   \includegraphics[clip=true, width=16cm]{interpolate_idw}
+\end{center}  
+\end{figure}
+
 \newpage
 
 

Modified: docs/trunk/english_us/user_guide/plugins_screenies/Makefile
===================================================================
--- docs/trunk/english_us/user_guide/plugins_screenies/Makefile	2008-10-09 09:33:08 UTC (rev 9463)
+++ docs/trunk/english_us/user_guide/plugins_screenies/Makefile	2008-10-09 11:15:38 UTC (rev 9464)
@@ -18,7 +18,9 @@
 	mapserver_export_test.eps\
 	coordinate_capture_dialog.eps\
 	ogrconverter_dialog.eps\
-	
+	interpolate_dialog.eps\
+	interpolate_idw.eps\
+
 ##### TARGETS #####
 
 all: $(PNG) $(JPG)

Added: docs/trunk/english_us/user_guide/plugins_screenies/interpolate_dialog.png
===================================================================
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Property changes on: docs/trunk/english_us/user_guide/plugins_screenies/interpolate_dialog.png
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   + application/octet-stream

Added: docs/trunk/english_us/user_guide/plugins_screenies/interpolate_idw.png
===================================================================
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Property changes on: docs/trunk/english_us/user_guide/plugins_screenies/interpolate_idw.png
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   + application/octet-stream