Re: [PhillyOnRails] PubNite Recap

[Cassius Rosenthal <cassius@xmodulation.com>]

Scruffy is better than Gruff in many respects:  
http://scruffy.rubyforge.org/

Perhaps your fu could be put to better use there.

Mat Schaffer wrote:
> On Mar 20, 2007, at 12:23 PM, Steve Eichert wrote:
>
> > Any chance you might be able to expand upon what was discussed 
> > regarding Gruff?  I'm just about to embark on a project that is 
> > likely going to make use of it and I'd be interested in hearing about 
> > anything that might help with that adventure. I'm sure the other 
> > Philly Rails heads would be interested as well, right? :)
>
> Sure thing.  Basically I've been trying to extend Gruff for doing 
> time-based graphing (think network throughput only measured in 2 
> minute chunks every 15 minutes).
>
> I got that working, but it felt hackish because of what I see as a 
> shortcoming in gruff.
>
> Basically in an attempt to be user friendly, gruff calculates things 
> like minimum_value, maximum_value.  In my time mixin I'd like to auto 
> calculate start_time, end_time, etc...
>
> Currently Gruff does this in a very simplistic fashion which requires 
> that the user add all the data to a graph first, then set any manual 
> overrides.  If the overrides are set first, the #data function will 
> wax the user's preference with it's own calculated values.  In code:
>
> graph.maximum_value = 10
> graph.data('my data', [8,12,15])
> graph.maximum_value # => 15
>
> graph.data('my data', [8,12,15])
> graph.maximum_value = 10
> graph.maximum_value # => 10
>
> I feel like a maximum_value set by the user should always override the 
> auto-calculations regardless of ordering.
>
> But Gruff references @maximum_value and @minimum_value directly all 
> over the place (even in different graph subclasses).  So fixing the 
> problem would cause a pretty big overhaul of the code (something like 
> 8 files modified)  and I'm a little nervous about presenting Topfunky 
> with such a rewrite as I'm sure his coder-fu is stronger than mine.  
> But Toby encouraged me to do it anyway and perhaps he'll be thankful.
>
> -Mat
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