[SciPy-User] sinc interpolation

Giovanni Marco Dall'Olio dalloliogm@gmail....
Wed Nov 25 10:16:39 CST 2009


On Wed, Nov 25, 2009 at 3:48 PM, Travis Oliphant <oliphant@enthought.com>wrote:

>
>
> from scipy.signal import resample
> from numpy import r_, sin
> from pylab import plot
>
> x = r_[0:10]
> y = sin(x)
> yy = resample(x, 100)
>
> # This is a bit tricky to get the x-samples right
> xx = r_[0:10:101j][:-1]
>

just a question, why don't you use  numpy.linspace(0, 10, 101) ?
>>> n = numpy.linspace(0, 10, 101)[:-1]
array([  0. ,   0.1,   0.2,   0.3,   0.4,   0.5,   0.6,   0.7,   0.8,
         0.9,   1. ,   1.1,   1.2,   1.3,   1.4,   1.5,   1.6,   1.7,
         1.8,   1.9,   2. ,   2.1,   2.2,   2.3,   2.4,   2.5,   2.6,
         2.7,   2.8,   2.9,   3. ,   3.1,   3.2,   3.3,   3.4,   3.5,
         3.6,   3.7,   3.8,   3.9,   4. ,   4.1,   4.2,   4.3,   4.4,
         4.5,   4.6,   4.7,   4.8,   4.9,   5. ,   5.1,   5.2,   5.3,
         5.4,   5.5,   5.6,   5.7,   5.8,   5.9,   6. ,   6.1,   6.2,
         6.3,   6.4,   6.5,   6.6,   6.7,   6.8,   6.9,   7. ,   7.1,
         7.2,   7.3,   7.4,   7.5,   7.6,   7.7,   7.8,   7.9,   8. ,
         8.1,   8.2,   8.3,   8.4,   8.5,   8.6,   8.7,   8.8,   8.9,
         9. ,   9.1,   9.2,   9.3,   9.4,   9.5,   9.6,   9.7,   9.8,
         9.9,  10. ])
>>> n == r_[0:10:101j][:-1]
[True.....]

-- 
Giovanni Dall'Olio, phd student
Department of Biologia Evolutiva at CEXS-UPF (Barcelona, Spain)

My blog on bioinformatics: http://bioinfoblog.it
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