What is your preferred way to produce charts in a

Question

I'd like to add some pie, bar and scatter charts to my Ruby on Rails web application. I want want them to be atractive, easy to add and not introduce much overhead.

What charting solution would you recommend?
What are its drawbacks (requires Javascript, Flash, expensive, etc)?

Answer 1

It requires flash and isn't free (though inexpensive): amcharts.

I've used it successfully and like it. I evaluated a number of options a while back and chose it. At the time, however, Google Charts wasn't as mature as it seems to be now. I would consider that first if I were to re-evaluate now.

Answer 2

I've just found ZiYa produces some really sexy charts and is Rails specific.

The downsides are it uses Flash and if you don't want the sites to link to XML/SWF page it costs $50 per site.

[I've not decided on it yet, but wanted to throw it out there in case people want to vote it up]

Answer 3

FWIW, I'm not a fan of using Google Charts when fit & finish is important. I find that the variables for sizing, in particular, are unpredictable - the chart does its own thing.

I haven't yet played with Gruff/Bluff/etc., but for a higher-profile project I won't use Google Charts.

Answer 4

I have started using protovis to generate SVG charts with javascript. My basic approach in rails is to have a controller that returns the data to be charted as JSON, and scoop it up with a bit of javascript and protovis.

Only downside, is that full IE support (Since it is based on SVG) is currently unavailable straight out of the box... However, current patches go a fair way to providing IE support, details of which can be found here.

Answer 5

HighChart - A charting library written in pure JavaScript

Gems like highchart-rails, lazy-high-chart makes the integration with rails easier

Answer 6

I 2nd the vote for flot. The latest version lets you do some animations and actions that I previously thought would only be possible via Flash. The documentation is fantastic. It simple to write by hand, but for simple cases it gets even easier with a Rails plugin called flotilla. You should check out the examples page for a better idea of what it's capable of. The zooming and hover capabilities are especially impressive.