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-<HTML><HEAD><TITLE>Graphviz FAQ 2006-07-27</TITLE>
+<HTML><HEAD><TITLE>Graphviz FAQ 2008-06-06</TITLE>
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-<H1>Graphviz FAQ 2006-07-27</H1>
+<H1>Graphviz FAQ 2008-06-06</H1>
<A HREF="mailto:gviz-bugs@research.att.com">The Graphviz Project</A>
<p>
<B>Q. How can I generate graph layouts in PDF?</B>
</A>
<P>
-First, create Postscript output, then use an external converter from
+Recent versions of graphviz with the CairoPango based drivers
+can generate PDF directly with the <tt>-Tpdf</tt> command line option.
+This this first.
+<P>
+Otherwise, create Postscript output, then use an external converter from
Postscript to PDF.
For example,<BR>
<tt>dot -Tps | epsf2pdf -o file.pdf</tt><br>
On the Linux bleeding edge, Graphviz has an optional plugin to use
the <A HREF="http://www.cairographics.org">cairo</A> back end,
which has antialiased, path-based graphics. If you want this,
-you must install cairo, which is not part of Graphviz. Cairo can be
-built from source, and binary RPMs for Fedora Core 5 (test 2) are available.
-Then you need to install the optional <A HREF="http://www.graphviz.org/pub/graphviz/CURRENT/">graphviz-cairo</A> plugin. (n.b. we tried
-cairo-1.0.2-1.fc4.remi for FC4 - it has errors.)
+you must install cairo, which is not part of Graphviz. Cairo is
+available in recent versions of Fedora linux, or it can be built
+from source.
<P>
<A name=Q9 HREF=#Q9>
<B>Q9</A>. I can only get 11x17 output.</B>
beauty of path-based graphics?
<P>
<A name=Q39>
-<B>Q. libexpat is reported as containing a virus or as a security hole.
+<B>Q39. libexpat is reported as containing a virus or as a security hole.
Is this a real problem?</B>
</A>
<P>
<P>
<A name=Q40 HREF=#Q40>
<B>Q40</A>. What is the coordinate transformation between the graph bb and a .png image?</B>
-
<OL>
<LI>
The bb is expanded by 4 graph-units in all directions (pad) to allow for finite line widths.
of: scaling, rotation, and translation. (used by svg, cairo, ps, renderers)
<LI>
coordinates pre-transformed into device units.
-<LI>
+</UL>
+<P>
+<A name=Q41 HREF=#Q41>
+<B>Q41</A>. File associations are broken in Mac OSX. Clicking on a <tt>dot</tt> file doesn't open Graphviz.</B>
+<p>
+The immediate fix is to rebuild the Launch Services database like this:
+<p>
+1. Trash all other versions of Graphviz.app on your system, except for the just installed one. You can use either of these command lines to find it:
+<p>
+<pre>locate Graphviz.app</pre>
+<p>
+or
+<p>
+<pre>find / -name "Graphviz.app"</pre>
+<p>
+2. Run the following command line:
+<p>
+<pre>/System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/LaunchServices.framework/Versions/A/Support/lsregister -kill -r / </pre>
+<p>
+or
+<p>
+<pre>/System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/LaunchServices.framework/Versions/A/Support/lsregister -kill -r /Applications</pre>
+<p>
+which deletes the Launch Services database and rebuilds it from existing apps. You may need to sudo to do this.
+<p>
+3. Verify that the Graphviz.app can now open .dot files and Microsoft Word can still open its own .dot files.
+<p>
+One artifact of this will be that Microsoft .dot files may appear with the Graphviz document icon. Unfortunately there doesn't seem any a priori way of getting the system to determine whether an arbitrary .dot file belongs to Word or Graphviz -- you can choose which application to open with by right-clicking or control-clicking on the document icon and choosing the app.
+<p>
+As for why the Launch Services database doesn't automatically register Graphviz,
+we're not entirely sure but suspect this only happens if both conditions
+hold true:
+<p>
+A. The user had installed Microsoft Word.<br>
+B. There is also another version of Graphviz.app present in the system. (Possibly the previous version 1.13 released by Pixelglow Software)<br>
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