Thanks.  This is attractive.
I remember (vaguely) a 'live page' ie where one could enter (into the browser) changes to the diagrams code and see the results immediately.
Is that page there? (Or am I mixing up with something else?)

How does diagrams compare with graphviz?  If this is an inappropriate (type-wrong?) question thats ok :-)  Its just that when I last looked at graphviz I found the documentation somewhat impenetrable -- like much else in Hackage -- lots of types, no examples.

On Mon, Oct 24, 2011 at 12:17 AM, Brent Yorgey <byorgey@seas.upenn.edu> wrote:
I am pleased to announce the release of version 0.4 of diagrams, a
full-featured framework and embedded domain-specific language for
declarative drawing.

The last announcement was of the 0.1 release; there have been quite a
few changes and improvements since then, including:

-   A new website including a gallery of examples:

     http://projects.haskell.org/diagrams/gallery.html

-   A new comprehensive user manual with lots of illustrative
   examples:

     http://projects.haskell.org/manual/diagrams-manual.html

-   New primitive shapes: rounded rectangles, wedges, and a new
   flexible API for generating polygons

-   Cubic splines

-   Basic text support

-   Support for external image primitives

-   Lots more convenient combinators, bug fixes, and improvements

Cool, how can I try it out?
---------------------------

For the truly impatient:

   cabal install gtk2hs-buildtools
   cabal install diagrams

For the slightly less impatient, read the quick tutorial, which has
detailed information about how to install the necessary packages and
will introduce you to the fundamentals of the framework:

 http://projects.haskell.org/diagrams/tutorial/DiagramsTutorial.html

For those who are even less impatient but want to really dig in and
use the power features, read the user manual:

 http://projects.haskell.org/manual/diagrams-manual.html

Cool, how can I contribute?
---------------------------

There are lots of ways you can contribute! First, you may want to
subscribe to the project mailing list
(http://groups.google.com/group/diagrams-discuss), and/or come hang
out in the #diagrams IRC channel on freenode.org.

-   There are lots of easy bug fixes, improvements, and feature requests
   just waiting for people wanting to get involved: see the bug
   tracker for a list of open tickets:

     http://code.google.com/p/diagrams/issues/list

-   The source repositories are mirrored using both darcs (on
   patch-tag.com) and git (on github.com), and patches are accepted
   in either place, thanks to Owen Stephen's great work on
   darcs-bridge [1].

-   Create a higher-level module built on top of the diagrams framework
   (e.g. tree or graph layout, generating Turing machine
   configuration diagrams, Penrose tilings ... your imagination is
   the only limit!)  and submit it for inclusion in a special
   diagrams-contrib package which will be created for such
   higher-level user-contributed modules.

-   Use diagrams to create some cool graphics and submit them for
   inclusion in the gallery.

-   Start your own project built on top of diagrams and let us know how
   it goes!

-   Last but certainly not least, just try it out for your pet graphics
   generation needs and contribute your bug reports and feature
   requests.


Happy diagramming!


Brought to you by the diagrams team:

-   Brent Yorgey
-   Ryan Yates

with contributions from:

-   Sam Griffin
-   Claude Heiland-Allen
-   John Lato
-   Vilhelm Sjöberg
-   Luite Stegeman
-   Kanchalai Suveepattananont
-   Scott Walck


[1] http://wiki.darcs.net/DarcsBridgeUsage

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