A rdoc collection auto-updated

Ever more applications hosted by git hub without documentation updated on-line !

http://rdoc.info/

A simple and really useful service that allows you to always have updated the documentation without having to regenerate every time.

Just click on the update button at the top to make sure that the documentation is up to date and a link back to the corresponding page github

doc of ActiveWarehouse

doc of ActiveWarehouse-etl

A little step by step building AW

A very simple guide to bild a basic RoR application with ActiveWarehouse e ActiveWarehouse-etl

the application

a simple italian guide

Getting started with Activewarehouse: documentation and examples

I began to discover these gems
ActiveWarehouse
ActiveWarehouse-etl

and the first problem was to put together some documentation and examples

an important introduction
a presentation and the code
another presentation

activewarehouse:
rdoc (documentation dated, regenerate it locally rake doc:plugin)
readme

a demo application (github rails 1.1.6) (svn link)
tutorial (via web archive)
a important change

activewarehouse-etl:
the first
ctl examples: 1, 2, 3

the 2 blog of developpers:
http://blog.anthonyeden.com/
http://martyhaught.com/

This is only a first collection and I hope to update it thanks to feedback
Will soon try to write a brief account of my step-by-step experiments

Line graph with error band

Example of line graph with error band.

The function draws a series of quadrilaterals whose vertices matched pairs of the two series data_up and data_down then inserting a line is the average values.
To actually use series with variable error just simply change the code by passing the three sets as parameters instead generate randomly.

test_it_controller.rb

class TestItController < ApplicationController
def index
 @graph1 = open_flash_chart_object(600,300,"/test_it/graph1_code")
end

def graph1_code

 title = Title.new("a Graph")

 chart = OpenFlashChart.new
 chart.set_title(title)

 @data_up = [1]
 @data_down = [-1]

 0.step(30, 1) {|i|
     @data_up << @data_up[i] +rand - 0.5
     @data_down << @data_down[i] + rand - 0.5
     }

 def draw_quadri(i)
   q = Shape.new( '#80B11A' )                        
   q.append_value(ShapePoint.new(i,@data_up[i]))
   q.append_value(ShapePoint.new(i,@data_down[i]))
   q.append_value(ShapePoint.new(i+1,@data_down[i+1]))
   q.append_value(ShapePoint.new(i+1,@data_up[i+1])) 
   return q
 end

 flux = []
 (@data_up.length-1).times do |h|
   flux << draw_quadri(h)
   end

 flux.each do  |shape|
    chart.add_element(shape)
    end

 scatter_line = ScatterLine.new( '#FF0000', 5 )
 scatter_line_u = ScatterLine.new( '#FF0000', 3 )
 scatter_line_d = ScatterLine.new( '#FF0000', 3 )
 data = []
 data_u = []
 data_d = []

 x=0
 (@data_up.length).times do |h|
   data   << (ScatterValue.new(x,(@data_up[h] + @data_down[h])/ 2))
   data_u << (ScatterValue.new(x,@data_up[h]))
   data_d << (ScatterValue.new(x,@data_down[h]))
   x+=1
   end

 scatter_line.set_values(data);         chart.add_element(scatter_line)
 scatter_line_u.set_values(data_u);     chart.add_element(scatter_line_u)
 scatter_line_d.set_values(data_d);     chart.add_element(scatter_line_d)

 x = XAxis.new
 x.set_range(0,32,5)
 x.set_offset(false)
 chart.set_x_axis(x)

 y = YAxis.new
 y.set_range(-5,5,1)
 y.set_offset(true)
 chart.set_y_axis(y)

 render :text => chart.to_s
end
end

Radar chart lines

First attempt to offer something to my referring to the excellent tutorial by pullmonkey.com and harryseldon
here is the ruby in transposition of the third example of radar chart
radar chart lines

test_it_controller.rb

class TestItController < ApplicationController
 def index
   @graph1 = open_flash_chart_object(600,300,"/test_it/graph1_code")
 end

 def graph_code
   chart = OpenFlashChart.new
   chart.set_title(Title.new('Radar Chart'))

   values = [30,50,60,70,80,90,100,115,130,115,100,90,80,70,60,50]
   spokes = ['a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p']
   vals = []

   values.each_with_index do |value, i|
     tmp = DotValue.new( value, '#D41E47' )
     tmp.set_tooltip("#val#&ltbr%rtSpoke: #{spokes[i]}")
     vals.push(tmp)
     end
  
   line = LineHollow.new()
   line.set_values( vals )
   line.set_halo_size( 0 )
   line.set_width( 2 )
   line.set_dot_size( 6 )
   line.set_colour( '#FBB829' )
   line.set_key( 'Hearts', 10 )
   line.loop()


   # add the area object to the chart:
   chart.add_element(line)

   r = RadarAxis.new( 150 )
   r.set_steps(10)
   r.set_colour( '#DAD5E0' )
   r.set_grid_colour( '#EFEFEF' )
   chart.set_radar_axis( r )

   tooltip = Tooltip.new()
   tooltip.set_proximity()
   chart.set_tooltip( tooltip )

   chart.set_bg_colour( '#ffffff' )

   render :text => chart.to_s
 end
end