Re: [graphviz-interest] Dendrograms/Cladograms

Hi,

> o Write all code in Perl. This is my strong preference.
>
graph traversal can be done in any language including PERL.

> o Avoid calling any external software if possible. This is to  
> simplify end-user usage.
>
You will call dot -- what is the difference to calling pic?

> o If calling external software, stick to formats I'm familiar with.  
> So, DOT language in preference to .pic.
>
But all answers in this thread told you that your rectangular  
cladogram drawings cannot be done with dot, neither with nor without  
"splines=ortho".


Is it correct that you do not have sample inputs for your cladograms yet?
Without sample inputs no algorithm can be developed, regardless of  
programming or layout tool/language.

Hermann.
Quoting Ron Savage <[email protected]>:

> Hi Hermann
>
> On 26/12/15 07:48, [email protected] wrote:
>> Hi Ron,
>>
>>> This is because there's no easy way of walking the tree and
>>> determining how wide it will spread.
>>>
>> please provide a sample input file you consider difficult.
>
> I was thinking of a tree which branches outwards, but at some point  
> one of the outer nodes starts a trend of repeated branching back  
> towards the center. I assume this would make it difficult to  
> determine the height (plotted left-to-right) of the cladogram. I do  
> admit this is speculation.
>
>> I am not sure what the input looks like, but if it is just a tree, then
>> simple traversal(s) will allow to determine all the information
>> necessary and produce the .pic file needed for the cladogram.
>
> Perhaps, but I'm uneasy about outputting .pic, since I don't know it  
> and I don't know my target audience. Since I've already indicated I  
> have great respect for dot, you might think that's inconsistent, but  
> pic is not shipped with dot. What I'm trying to say is I'm juggling  
> various goals:
>
> o Write all code in Perl. This is my strong preference.
>
> o Avoid calling any external software if possible. This is to  
> simplify end-user usage.
>
> As it is, I've already had a formal request to automatically install  
> dot when someone installs one of my dot-using modules. But this is a  
> can of worms, even though now, in Perl, we have Alien::Base + it's  
> plugins which attempts to support such installs.
>
> o If calling external software, stick to formats I'm familiar with.  
> So, DOT language in preference to .pic.
>
>> I played a bit more with "pic", made "pic" produce a Christmas tree
>> today ;-)
>> https://twitter.com/HermannSW/status/680343940692836352
>
> Neato, very neato.
>
> -- 
> Ron Savage - savage.net.au
> _______________________________________________
> [email protected]
> http://lists.research.att.com/mailman/listinfo/graphviz-interest


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