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9 Graphics With Frills
In this section we describe a few options for included graphics.
The HTML ALT option provides some alternative text if the graphic fails to load, which also, in some browsers, appears as a tool tip. To get this in our HTML document, modify the code given in Section 8.2 so that the appropriate line reads:
\html{\htmladdimg[ALT="Your ALT text"]{../graphics/graph.jpg}}
Note that in general any valid HTML markup can go in the optional argument for \htmladdimg .
The ALT text can also be set in equations. By default LATEX2HTML uses the LATEX source of the equation as the ALT text , which is pretty meaningless for most readers, so it is useful to either suppress it by specifying a null string, or to give something more helpful. In the case of equations, the ALT text is specified with a \htmlimage command (rather than with a \htmladdimg command) as in the following example:
\begin{equation}
\htmlimage{ALT="An important equation"}
\label{eqn1}
e^{i\pi}=-1
\end{equation}
which gives:
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(1) |
If you are reading this in Internet Explorer, holding your mouse over the equation should produce a tool tip `An important equation'.
To stick a border round the image -- in both the PDF and HTML versions -- we modify two lines of the code in Section 8.2 as follows:
\latex{\fbox{\includegraphics{graphics/graph.jpg}}}
\html{\htmladdimg[BORDER="1"]{../graphics/graph.jpg}}
Sometimes it is useful to scale images. To make the image four inches wide in both the PDF and HTML versions, for example, use:
\latex{\includegraphics[width=4in]{graphics/graph.jpg}}}
\html{\htmladdimg[WIDTH="4in"]{../graphics/graph.jpg}}
Unfortunately it does not seem possible to get LATEX2HTML to correctly generate a
WIDTH="50%" type of construction, which would match the scale=0.5 option of \includegraphics . This is presumably another bug or oversight.
In the PDF version, the caption will be above the image if the \caption comes before the \includegraphics ; otherwise it will be below. LATEX2HTML is not sensitive to this, however.
As an example, Figure 9.5 is a scaled, boxed image with ALT text. Further examples may be found in example.tex.
Figure 1:
A scaled boxed JPEG image. It should be four inches wide in both the PDF and HTML versions. In the HTML version, holding your mouse over it will produce the tooltip: `A graphic'.
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Note that the \includegraphics and \htmladdimg commands have many other useful options; they are explained in the hyperref and LATEX2HTML documents.
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