I'm don't know about open source, but I agree that currently DataGraph
is the best bet, and it is what I'm using for a couple of scientific
projects. GC compatible too.
Rob
On 1-Jun-08, at 7:20 AM, Ben Einstein wrote:
I looked into this before. While Google's API is pretty good, it
takes a bunch of work to customize charts and graphs just the way
you want. I believe there's also a limit on the number of charts a
given user can generate, although I can't recall what this number
is. After playing with all the available options (there aren't many)
I chose David Addalsteinsson's DataGraph application/framework.
His tools are very powerful for 2D graphs and have a boat-load of
pretty neat features that you'll never get with the Google API
(cropping, saving, adding points, live data graphing, etc). He has a
new open-source license and a commercial one for a pretty modest
price. The biggest advantage is the developer himself; he seems
extremely eager to add features that user's request and help with
questions. The biggest disadvantage is it's size, which weighs in
somewhere around 18mb. Check this out: http://www.visualdatatools.com/DataGraph/
Ben
On May 31, 2008, at 1:29 PM, Jamie Phelps wrote:
I am writing an application that could seriously benefit from a
good graphing API. Of course, the simplest solution to this would
be if Apple opened up GraphKit for Cocoa developers. Sadly, that
seems not to be in the near future, so I'm looking at alternatives.
While there are some graphing frameworks out there, most of them
seem incomplete and/or without a great deal of ongoing development.
So, my thought was that Google's relatively new Charts API would be
a great way to plug this hole for the time being. Simple URL calls
return PNG images that could then be cached.
Other than the obvious need for an internet connection, can anyone
see any reason this can't work as a viable solution to the graphing
problem in Cocoa?
For reference, here is Google's Charts API page:
http://code.google.com/apis/chart/
Jamie
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