In [2]:

    

Plot=require 'itorch.Plot'


    

In [4]:

    

x1 = torch.randn(40):mul(100)
y1 = torch.randn(40):mul(100)


    

In [15]:

    

function colormap(x)
    assert(x:dim() == 1)
    local mean = x:mean()
    local std = x:std()
    local c = {}
    for i=1,x:size(1) do
        local t = 99 * (x[i] - mean) / std
        if t > 0 then
            if t > 99 then t = 99 end
            c[i] = '#' .. tostring(math.floor(t)) .. '0000'
        else
            t = -t
            if t > 99 then t = 99 end
            c[i] = '#0000' .. tostring(math.floor(t))
        end
    end
    return c
end
c = colormap(x1)
plot = Plot():circle(x1, y1, c, 'hi'):draw()


    

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