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version 1.7, 2013/07/13 21:50:50 version 1.8, 2013/08/22 19:42:55
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 \label{Authoring_Dynamic_Plot_Gnuplot}  \label{Authoring_Dynamic_Plot_Gnuplot}
   
 \index{gnuplot}\index{plot}\index{dynamic plot}  \index{gnuplot}\index{plot}\index{dynamic plot}
 The \textbf{gnuplot} LON-CAPA tag allows an author to design a plot which is created  The \textbf{gnuplot} LON-CAPA tag allows an author to design a plot which will be
 when it is viewed.  This is intended for use in homework problems  created programatically at the time when it is requested for display by a student. 
 where each student needs to see a distinct plot.  It can be used in  This is intended for use in homework problems where a distinct plot should be 
 conjunction with a \textbf{script} tag to generate curve data for random plots.  rendered for each student.  It can be used in conjunction with a 
   \textbf{script} tag to generate curve data for random plots.
 If you are using  If you are using
 static data a dynamically generated plot is not appropriate because of  static data a dynamically generated plot is not appropriate because of
 the overhead associated with generating the plot. In that case, use a  the overhead associated with generating the plot. In that case, use a
 picture (see \ref{Authoring_Adding_Pictures}).  picture (see Adding Picture section \ref{Authoring_Adding_Pictures}).
   
 The easiset way to create a template for a gnuplot tag is to use the colorful   The easiset way to create a template for a gnuplot tag is to use the colorful 
 problem editor, and select \textbf{GnuPlot} from the \textbf{Insert} dropdown menu.   problem editor, and select \textbf{GnuPlot} from the \textbf{Insert} dropdown menu. 
 Then the boxes may be filled with the assistance of this documentation. By default, only  Thereafter the boxes may be filled using this documentation to assist you. By default, only
 the parent \textbf{gnuplot} tag and the child \textbf{curve} tag are created by   the parent \textbf{gnuplot} tag and the child \textbf{curve} tag are created by 
 default when the plot is inserted with the colorful editor. Other tags can be   when the plot is inserted into a problem using the colorful editor. Other tags can be 
 added to decorate and polish your plot using the \textbf{Insert:} dropdown   added to decorate and polish your plot using the \textbf{Insert:} dropdown 
 from the colorful editor.  provided by the colorful editor.
   
 The following \textbf{gnuplot} parameters may be set:  The following \textbf{gnuplot} parameters may be set:
   
Line 30  See the color selection section \ref{Aut Line 31  See the color selection section \ref{Aut
 for help on specifying colors.  for help on specifying colors.
   
 \item \texttt{foreground color of image (x000000)}   \item \texttt{foreground color of image (x000000)} 
 See the color selection  section \ref{Authoring_Dynamic_Plot_Color_Selection}  See the color selection section \ref{Authoring_Dynamic_Plot_Color_Selection}
 for help on specifying colors.  for help on specifying colors.
   
 \item \texttt{height of image (pixels)}  \item \texttt{height of image (pixels)}
Line 45  If the image is transparent the backgrou Line 46  If the image is transparent the backgrou
   
 \item \texttt{Display grid} ``Yes'' or ``No''.    \item \texttt{Display grid} ``Yes'' or ``No''.  
   
 \item \texttt{Number of samples for non-data plots}  If a \textbf{function} tag   \item \texttt{Number of samples for non-data plots}  If a \textbf{function} tag is used
 (see section \ref{Authoring_Dynamic_Plot_Curve_Function}) is used to specify the  (see Plotting Functions section \ref{Authoring_Dynamic_Plot_Curve_Function}) to specify the
 \textbf{curve} (see section \ref{Authoring_Dynamic_Plot_Curve}), this indicates the number  \textbf{curve} (see Specifying Curves to Plot section \ref{Authoring_Dynamic_Plot_Curve}), 
 of sample points to use.  this indicates the number of sample points to use.
   
 \item \texttt{Draw border around plot} ``Yes'' or ``No''  \item \texttt{Draw border around plot} ``Yes'' or ``No''
   
Line 81  The parent \texttt{gnuplot} tag allows u Line 82  The parent \texttt{gnuplot} tag allows u
 editor):  editor):
   
 \begin{itemize}  \begin{itemize}
 \item \textbf{curve} (see section \ref{Authoring_Dynamic_Plot_Curve})  \item \textbf{curve} (see Specifying Curves to Plot section \ref{Authoring_Dynamic_Plot_Curve})
 \item \textbf{title}, \textbf{xlabel}, and \textbf{ylabel} (see section   \item \textbf{title}, \textbf{xlabel}, and \textbf{ylabel} (see Plot Labels and Key section 
 \ref{Authoring_Dynamic_Plot_Title_X_Y_Label})  \ref{Authoring_Dynamic_Plot_Title_X_Y_Label})
 \item \textbf{key}   (see section \ref{Authoring_Dynamic_Plot_Key})  \item \textbf{key}   (see Plot Labels and Key section \ref{Authoring_Dynamic_Plot_Key})
 \item \textbf{label} (see section \ref{Authoring_Dynamic_Plot_Label})  \item \textbf{label} (see Plot Labels and Key section \ref{Authoring_Dynamic_Plot_Label}) 
 \item \textbf{axes}  (see section \ref{Authoring_Dynamic_Plot_Axes})  \item \textbf{axes}  (see Plot Axes Details section \ref{Authoring_Dynamic_Plot_Axes})
 \item \textbf{tics}  (see section \ref{Authoring_Dynamic_Plot_Tics})  \item \textbf{tics}  (see Plot Axes Details section \ref{Authoring_Dynamic_Plot_Tics})
 \end{itemize}  \end{itemize}
   
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