Tim Docker wrote:
Peter wrote:
Has anyone got some code for drawing charts? I don't mean graphs of functions, ala
http://dockerz.net/twd/HaskellCharts ... I would like something that can generate PNGs in memory, i.e. not directly to a file.
The library at the above URL supports a range of backends through the (nice to use) cairo graphics API. In memory images are supported. Also, it's by no means just graphs of functions - that just happens to be several of the demos.
I'd like 2D pie charts, bar charts and something like a google-o-meter.
An the moment it does line charts and a few variants of these. I'll add pie and bar charts when I need them - patches in the meantime gratefully accepted.
Tim
I was using the HaskellCharts library and needed the same two things; so i rolled a quick and dirty pie chart generator (Barchart is on the TODO list). http://72.167.145.184:8000/Screenshot.png http://72.167.145.184:8000/PieChart.hs ---- x <- widgetGetDrawWindow canvas y <- widgetGetSize canvas renderWithDrawable x (f y) where f = PieChart.graph "title" 0x548B54 [(50.0,"A"), (50.0,"B")]