Class: GerbilCharts::Models::MonotonousGraphModel

Inherits:
GraphModel
  • Object
show all
Defined in:
lib/gerbilcharts/models/monotonous_graph_model.rb

Overview

MonotonousGraphModel

simple graph model (x increases monotonously) All timeseries models are derived from this class

Direct Known Subclasses

TimeSeriesGraphModel

Instance Attribute Summary collapse

Attributes inherited from GraphModel

#altname, #href, #href_pivot, #name, #transformer, #userdata, #userlabel1, #userlabel2

Instance Method Summary collapse

Methods inherited from GraphModel

#each_value_pair, #hasHref?, #hasHrefPivot?, #hasUserData?, #hasUserTips?, #is_timeseries?, #min_max_x, #min_max_y, #recreate, #setHref, #setHrefPivot, #setUserData, #setUserTip1, #setUserTip2, #updateOptions

Constructor Details

#initialize(name, opt = {}) ⇒ MonotonousGraphModel

Returns a new instance of MonotonousGraphModel.



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# File 'lib/gerbilcharts/models/monotonous_graph_model.rb', line 15

def initialize(name,opt={})
  super(name)
  @xrange = RawRange.new
  @yrange = RawRange.new
  @rounderx = RoundRange
  @roundery = RoundRange
  @xarr=[]
  @yarr=[]
  @aggregation_factor=1
end

Instance Attribute Details

#aggregation_factor ⇒ Object (readonly)

how to aggregate? bits/bytes*bucketsize



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# File 'lib/gerbilcharts/models/monotonous_graph_model.rb', line 13

def aggregation_factor
  @aggregation_factor
end

#rounderx ⇒ Object (readonly)

rounded ranges according to presets



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# File 'lib/gerbilcharts/models/monotonous_graph_model.rb', line 12

def rounderx
  @rounderx
end

#roundery ⇒ Object (readonly)

rounded ranges according to presets



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# File 'lib/gerbilcharts/models/monotonous_graph_model.rb', line 12

def roundery
  @roundery
end

#xarr ⇒ Object (readonly)

the x values



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# File 'lib/gerbilcharts/models/monotonous_graph_model.rb', line 9

def xarr
  @xarr
end

#xrange ⇒ Object (readonly)

raw ranges



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# File 'lib/gerbilcharts/models/monotonous_graph_model.rb', line 11

def xrange
  @xrange
end

#yarr ⇒ Object (readonly)

the y values



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# File 'lib/gerbilcharts/models/monotonous_graph_model.rb', line 10

def yarr
  @yarr
end

#yrange ⇒ Object (readonly)

raw ranges



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# File 'lib/gerbilcharts/models/monotonous_graph_model.rb', line 11

def yrange
  @yrange
end

Instance Method Details

#add(x_val, y_val) ⇒ Object

add a tuple, apply a transformer lambda is supplied by the user

A new datapoint must have a x_val greater than the previous one



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# File 'lib/gerbilcharts/models/monotonous_graph_model.rb', line 29

def add(x_val,y_val)

  if @xarr.length > 0 and @xarr.last > x_val
 # ignoring out of order data 
    # raise "Expecting monotonous series data"  
 return 
  end

  # x updates
  @xrange.update x_val
  @xarr << x_val 
  
  # y updates
  y_val = @transformer.xform(y_val) if @transformer
  @yarr << y_val
  @yrange.update y_val
   
end

#add_tuples(tarr) ⇒ Object

add an array of values at once (just a convenience method)



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# File 'lib/gerbilcharts/models/monotonous_graph_model.rb', line 49

def add_tuples tarr
  tarr.each do |t|
    add t[0],t[1]
  end
end

#clear ⇒ Object 



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# File 'lib/gerbilcharts/models/monotonous_graph_model.rb', line 55

def clear
  @xrange.reset
  @yrange.reset
  @xarr=[]
  @yarr=[]
end

#count ⇒ Object 



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# File 'lib/gerbilcharts/models/monotonous_graph_model.rb', line 62

def count
  @xarr.size
end

#crop_at(cutoff) ⇒ Object

crop all tuples less than an absolute cutoff [cutoff] Cutoff value



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# File 'lib/gerbilcharts/models/monotonous_graph_model.rb', line 139

def crop_at(cutoff)
  until @xarr.empty? or @xarr.first >= cutoff
    @xarr.shift
    @yarr.shift
  end
  recompute_ranges
end

#crop_window(cutoffwindow) ⇒ Object

crop all tuples older than a cutoff window

cutoffwindow

older than a number of seconds



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# File 'lib/gerbilcharts/models/monotonous_graph_model.rb', line 131

def crop_window(cutoffwindow)
  xcutoff = latest_x - cutoffwindow
  crop_at(xcutoff)
end

#each_tuple ⇒ Object 



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# File 'lib/gerbilcharts/models/monotonous_graph_model.rb', line 115

def each_tuple
  for i in (0 .. @xarr.length-1)
    yield @xarr[i],@yarr[i]
  end
end

#each_tuple_reverse ⇒ Object 



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# File 'lib/gerbilcharts/models/monotonous_graph_model.rb', line 121

def each_tuple_reverse
  @xarr.length.downto(1) do  |i|
    yield @xarr[i-1],@yarr[i-1]
  end
end

#first {|, | ... } ⇒ Object

Yields:

  • (, ) 


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# File 'lib/gerbilcharts/models/monotonous_graph_model.rb', line 82

def first
  yield @xarr[0],@yarr[0]
end

#formatted_val(rawval) ⇒ Object 



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# File 'lib/gerbilcharts/models/monotonous_graph_model.rb', line 90

def formatted_val rawval
  return @yrange.format_value(rawval)
end

#get_statistical_analysis ⇒ Object

statistical analysis standard deviation and 95th percentile go here

mode => :normal or :ninety_fifth

returns array 0 = min, 1 = max, 2 = avg, 3 = total, 4 = latest, 5=95th

todo :  5 = stddev  
todo : support :ninety_fifth



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# File 'lib/gerbilcharts/models/monotonous_graph_model.rb', line 170

def get_statistical_analysis()
  return [0,0,0,0,0,0] if @yarr.size==0

  a = []
  a[0]= @yrange.rmin
  a[1]= @yrange.rmax
  a[3]=0

  @yarr.each do |v|
    a[3] = a[3] + v
  end
  a[2] = a[3]/@yarr.size
  a[3] = a[3] * @aggregation_factor
  a[4] = latest_val

  # 95th statistical
  rank=(@yarr.size * 0.95).round 
  a[5] = @yarr.sort()[rank-1] 
  
  return a
end

#latest {|@xarr.last, @yarr.last| ... } ⇒ Object

Yields:



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# File 'lib/gerbilcharts/models/monotonous_graph_model.rb', line 66

def latest
  yield @xarr.last, @yarr.last
end

#latest_formatted_val ⇒ Object 



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# File 'lib/gerbilcharts/models/monotonous_graph_model.rb', line 86

def latest_formatted_val
  return @yrange.format_value(@yarr.last)
end

#latest_val ⇒ Object 



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# File 'lib/gerbilcharts/models/monotonous_graph_model.rb', line 74

def latest_val
  return @yarr.last
end

#latest_x ⇒ Object 



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# File 'lib/gerbilcharts/models/monotonous_graph_model.rb', line 70

def latest_x
  return @xarr.last
end

#latest_x_dbtime ⇒ Object 



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# File 'lib/gerbilcharts/models/monotonous_graph_model.rb', line 78

def latest_x_dbtime
  return (@xarr.last.tv_sec) << 32
end

#randomizeLastValue ⇒ Object

for test purposes



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# File 'lib/gerbilcharts/models/monotonous_graph_model.rb', line 156

def randomizeLastValue
  v=@yarr.last
  @yarr[@yarr.size-1]=v * ( 0.5 + rand())
end

#ranges {|@xrange, @yrange| ... } ⇒ Object

Yields:



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# File 'lib/gerbilcharts/models/monotonous_graph_model.rb', line 94

def ranges
  yield @xrange, @yrange if block_given?
  return @xrange,@yrange
end

#round_given_x(rx) ⇒ Object 



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# File 'lib/gerbilcharts/models/monotonous_graph_model.rb', line 107

def round_given_x(rx)
  return @rounderx.new(rx)
end

#round_given_y(ry) ⇒ Object 



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# File 'lib/gerbilcharts/models/monotonous_graph_model.rb', line 111

def round_given_y(ry)
  return @roundery.new(ry)
end

#round_ranges ⇒ Object 



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# File 'lib/gerbilcharts/models/monotonous_graph_model.rb', line 99

def round_ranges
  if block_given?
   yield @rounderx.new(@xrange), @roundery.new(@yrange) 
  else
   return @rounderx.new(@xrange), @roundery.new(@yrange)
  end
end

#tuples_since(x_last) ⇒ Object

all data points newer than a cut off



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# File 'lib/gerbilcharts/models/monotonous_graph_model.rb', line 148

def tuples_since(x_last)
    istart = binarySearch(@xarr,x_last,0,@xarr.length)
    for i in istart..@xarr.length-1
      yield @xarr[i],@yarr[i]
    end
end