On Tue, Jan 17, 2012 at 6:42 PM, John Lenz <l...@math.uic.edu> wrote:
> > HTML5 Canvas is great for charts. If you go this route you might as well > use a library which draws charts for you instead of writing all this code > yourself. > > Personally, I use extjs version 4 which has some amazing charts, but there > are other libraries out there. > > http://www.sencha.com/**products/extjs/examples/#**sample-3<http://www.sencha.com/products/extjs/examples/#sample-3> > > Essentially the server provides the data in JSON or XML some other format, > and the extjs code draws the charts on the client side. > > If you go with extjs, then the server side I would suggest a small, simple > yesod or snap server. You could probably get the server under a hundred > lines of code with yesod; see some of the examples in the yesod book. > yesod or snap would serve JSON of the statistics on request, and also > serve the javascript files which draw the charts. > Yes, I was thinking about using Haskell to generate everything that specific Javascript library needs to display charts in browser. Naturally charts are to be displayed by this library itself. I also would like to have Haskell tools to generate Web GUI in Javascript. As for yesod, I am not sure that I like approach which mixes HTML with code, or even worse - creates a new weird HTML-like language like 'whamlet quasi-quotation', for example: <!-- <a href=@{Page1R}>Go to page 1! --> I prefer using Turing complete PL to program web client, like the one used in GWT (Java) or Cappuccino (Objective-J). http://cappuccino.org/learn/ In this case you /almost/ don't need to know HTML, CSS, DOM, Ajax, etc. to develop WebUI and good PL lets you concentrate on problem domain instead of bothering about browser support. It is a real pity that Haskell still has no such tools to generate Web GUI in Javascript. (((
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