[Catalyst] Charting data

[Shane McEwan]

G'day Nigel, All.

Another charting package that I've just started using is Chart Director[1].
It creates beautiful graphs and charts and is very flexible. It's not free
but it's relatively cheap and you can download a free version that
watermarks your charts if you want to test it out.

Supports Windows, Linux, Solaris, FreeBSD, OSX, ASP, .NET, Java, ColdFusion,
PHP, Perl, Python, Ruby, C++, 32bit and 64bit. Phew!

[1] http://www.advsofteng.com/

> -----Original Message-----
> From: Nigel Metheringham 
> [mailto:nigel.metheringham at dev.intechnology.co.uk] 
> Sent: Tuesday, 1 May 2007 02:21
> To: The elegant MVC web framework
> Subject: Re: [Catalyst] Charting data
> 
> Having posted the original request I thought I had better follow up  
> with what I actually did...
> 
> It looked like plotkit would do what I want, and was easy to 
> generate  
> data for within the main web page (so don't need 2 http round trips  
> and carrying state between them).  However plotkit does not support  
> legends on graphs - and since I was generating some with lots of  
> lines, this was pretty much a must have.
> 
> I found that WebFX Chart ( http://webfx.eae.net/dhtml/chart/ 
> chart.html ) had support for a legend.  It generally works well  
> although a few things are a bit "lumpy" - handling of axes etc.
> 
> The implementation is a little bit of a hack, but basically I have a  
> graph method in each of the graphable controllers, this passes a  
> DBIx::Class resultset to a build_graph method in a common 
> superclass,  
> which pushes a graph structure into the stash (containing a set of  
> lines, each with an array of values, a min and a max value).  A TT  
> fragment in the view converts this into a set of js calls for WebFX  
> Chart.
> 
> This works acceptably - it has a few performance issues for large  
> graphs, which appear to be down to the overhead in pulling out and  
> building into objects the several hundred rows of data - I suspect  
> that if I just took the values from a dbh rather than letting DBIC  
> create a new row object the whole thing would speed up rather  
> dramatically.
> 
> 	Nigel.
> --
> [ Nigel Metheringham           Nigel.Metheringham at InTechnology.co.uk ]
> [ - Comments in this message are my own and not ITO opinion/policy - ]
> 
> 
> 
> 
> 
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