Re: [Haskell-cafe] ANN: diagrams 0.4

On Tue, Oct 25, 2011 at 10:40 AM, Ivan Lazar Miljenovic < ivan.miljenovic@gmail.com> wrote:

On 25 October 2011 16:02, Rustom Mody wrote:

...

On Mon, Oct 24, 2011 at 10:16 AM, Ivan Lazar Miljenovic wrote:

...

On 24 October 2011 13:51, Rustom Mody wrote:

...

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.

How is it now, better? If not, what kind of more documentation would you like?

Without claiming to have looked very hard, I looked up grahhviz in hayoo, gathered I should be looking at Data.GraphViz and tried clicking everything that looked reasonable here but still cant find an example of a graph :-) ie a graphviz graph in haskell.

Well, there are indeed examples in there, but not in Data.GraphViz: that module is aimed more at "how can I convert my existing data into a Dot representation", not constructing one by hand. As of the latest version (2999.12.*), there are indeed examples for anyone that wants them:

* Sample graph in Dot representation used as a base case:

http://hackage.haskell.org/packages/archive/graphviz/2999.12.0.3/doc/html/Da... * Using the canonical representation:

http://hackage.haskell.org/packages/archive/graphviz/2999.12.0.3/doc/html/Da... * Using the graph representation:

http://hackage.haskell.org/packages/archive/graphviz/2999.12.0.3/doc/html/Da... * Using the Monadic representation (based upon the dotgen package):

http://hackage.haskell.org/packages/archive/graphviz/2999.12.0.3/doc/html/Da...

Thanks. In the Data.GraphViz.Types.Generalised page you have the starting line: It is sometimes useful to be able to manipulate a Dot graph *as* an actual graph. This representation lets you do so... Evidently some other context is needed to understand this line? [Sorry if I am dense]