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Contents
require_relative '../../helper_no_rails'
class RailsDataExplorer
module Utils
describe DataQuantizer do
describe '#quantize' do
[
[
'4 values, 1-3.1',
[1,2,3,3.1],
{},
{
values: [1.0, 1.99, 3.01, 3.1],
delta: 0.03
}
],
[
'4 values, 0.001-0.03',
[0.001,0.002,0.01,0.03],
{},
{
values: [0.0009, 0.0021, 0.009899999999999999, 0.03],
delta: 0.0003
}
],
[
'10 values between 1.0 and 2.0',
[1.000001, 1.1, 1.10001, 1.11, 1.15, 1.201, 1.205, 1.211, 1.999999],
{},
{
values: [1.0, 1.1, 1.1, 1.11, 1.15, 1.2, 1.21, 1.21, 2.0],
delta: 0.01
}
],
[
'9 values around 10, one outlier at 100',
9.times.map { rand + 9.5 } + [100],
{},
{
values: [10.0, 10.0, 10.0, 10.0, 10.0, 10.0, 10.0, 10.0, 10.0, 100.0],
delta: 1.0
}
],
[
'2 clusters of 5 values each at 1.0 and 2.0',
5.times.map { 1 + (rand/100.0) } + 5.times.map { 2 + (rand/100.0) },
{},
{
values: [1.0, 1.0, 1.0, 1.0, 1.0, 2.0, 2.0, 2.0, 2.0, 2.0],
delta: 0.02
}
],
].each do |(name, vals, options, xpect)|
it "quantizes #{ name }" do
ds = DataSeries.new('_', vals)
dq = DataQuantizer.new(ds, options)
dq.values.must_equal xpect[:values] if xpect[:values]
dq.number_of_bins.must_equal xpect[:number_of_bins] if xpect[:number_of_bins]
dq.delta.must_equal xpect[:delta] if xpect[:delta]
end
end
end
end
end
end
Version data entries
10 entries across 10 versions & 1 rubygems