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BZ5635 - Document the new <tic> tag.
1: \label{Authoring_Dynamic_Plot_Tics}
2:
3: The \textbf{xtics} and \textbf{ytics} tags can be inserted by selecting
4: the \textbf{Plot tics} item from the insert selection list of the
5: \textbf{gnuplot} tag.
6:
7: The \textbf{xtics} and \textbf{ytics} tags have identical structure and the
8: description presented here applies to both.
9:
10: The tics tags allow specification of the following attributes:
11:
12: \begin{itemize}
13:
14: \item \texttt{Location of major tic marks}
15: ``Border'' or ``Axis''.
16: Tic marks can be placed on the border or on the axes. The images below
17: illustrate the effects of each of these options.
18:
19: \includegraphics[ width=0.40\paperwidth]{Authoring_Dynamic_Plot_Axis_Tics_border}
20: \includegraphics[ width=0.40\paperwidth]{Authoring_Dynamic_Plot_Axis_Tics_x_axis}
21:
22: \item \texttt{Mirror tics on opposite axis?}
23: ``Yes'' or ``No''.
24: If the \textbf{location of tic marks} is set to ``border'' this parameter
25: determines if they are shown on both the top and bottom or right and left
26: sides of the graph. The ``mirror'' tic marks are unlabelled.
27:
28: \includegraphics[ width=0.40\paperwidth]{Authoring_Dynamic_Plot_Axis_Tics_border}
29: \includegraphics[ width=0.40\paperwidth]{Authoring_Dynamic_Plot_Axis_Tics_nomirror}
30:
31: \item \texttt{Start major tics at}
32:
33: The point in graph coordinates which to start making major tics.
34: This may be less than or greater than the lower limit for the axis.
35:
36: \item \texttt{Place a major tic every}
37:
38: The span, in graph coordinates, between each major tic mark.
39:
40: \item \texttt{Stop major tics at}
41:
42: This may be less than or greater than the upper limit for the axis.
43:
44: \item \texttt{Number of minor tics between major tic marks}
45:
46: The number of subdivisions to make of the span between major tic marks.
47: Using a value of ``10'' leads to 9 minor tic marks. The example below
48: uses a value of ``5'' to produce 4 tic marks.
49:
50: \includegraphics[ width=0.40\paperwidth]{Authoring_Dynamic_Plot_Axis_Tics_minor}
51:
52:
53: \item \texttt{rotate}
54:
55: For output devices that support it, the \texttt{rotate=`1'} attribute rotates
56: the tic label. This is most useful with large lables defined by the
57: \textbf{tic} tag described below.
58:
59: \end{itemize}
60:
61: In addition to specifying regular tic intervals via the attributes of the
62: \textbf{xtics} and \textbf{ytics} you can specify arbitrary tic locations
63: by enclosing \textbf{tic} tags within the body of these tags. Each
64: \textbf{tic} tag requires the \textbf{location} attribute which specifies the
65: location of a tic on the axis. The body of the tag contains the label of
66: that tic.
67:
68: The \textbf{xtic} or \textbf{ytic} \texttt{rotate} attribute can rotate
69: the label text if the output device supports text rotation.
70: If \textbf{tic} tags are embedded within the \textbf{xtic} or \textbf{ytic}
71: tags attributes of those tags that specify tic boundaries and interval are
72: ignored. Here's an example of an X axis tic specification in months of the year:
73:
74: \begin{verbatim}
75: ...
76: <xtics rotate='on'>
77: <tic location='1'>January</tic>
78: <tic location='2'>February</tic>
79: <tic location='3'>March</tic>
80: <tic location='4'>April</tic>
81: <tic location='5'>May</tic>
82: <tic location='6'>June</tic>
83: <tic location='7'>July</tic>
84: <tic location='8'>August</tic>
85: <tic location='9'>September</tic>
86: <tic location='10'>October</tic>
87: <tic location='11'>November</tic>
88: <tic location='12'>December</tic>
89: </xtics>
90: <ytics end="6.0" location="border" start="-6.0"
91: increment="1.0" mirror="on" />
92: \end{verbatim}
93:
94: Note that tic locations are completely under your control and do not even have
95: to be at regular interevals on the axis if that better suits your needs.
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