First idea of the heatmap

Creates dummy testdata and displays them as an image.

testdummy.rb

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+require 'RMagick'
+
+include Magick
+
+# Create a dummy list including 300 cores, with a load between 0 and 100
+numberGenerator = Random.new()
+
+# heatmap over 5 minutes by one measure per 5 sec
+dummyList = Array.new(60) do
+  # 16 dummy cores
+  cores = Array.new(16) { numberGenerator.rand(100) }
+  # every 10 load percent one heatpoint
+  i = 0
+  Array.new(10) do
+    amount = cores.select { |core| core >= i and core < (i+10)}.length
+    i = i + 10
+    amount
+  end
+end
+
+# puts dummyList.inspect
+
+# start drawing the damn thing
+loadImg = Image.new(900,150) { self.background_color = "white" }
+
+i = 0
+dummyList.each do |point|
+  j = 0
+  point.each do |cores|
+    # draw a red rectangle on the white background
+    core = Draw.new
+
+    l = (255-((cores*7.96875))).round
+    core.fill(Pixel.from_hsla(0, 255, l, 1).to_color)
+    core.rectangle((i*15), (j*15), ((i+1)*15), ((j+1)*15))
+    core.draw loadImg
+    j = j + 1
+  end
+  i = i + 1
+end
+
+loadImg.display