Comparisons: Difference between revisions

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Some examples that show how to achieve the same results using either IDL SPEDAS or python pySPEDAS.
Some examples that show how to achieve the same results using either IDL SPEDAS or python pySPEDAS.
* [[Smooth function]]
* [[Spectrogram]]





Latest revision as of 22:55, 24 April 2020

Comparisons of pySPEDAS to IDL SPEDAS

Some examples that show how to achieve the same results using either IDL SPEDAS or python pySPEDAS.


Smooth function

  • IDL code:
pro test_smooth
  ; smooth data
  
  t = [1., 2., 3., 4., 5., 6., 7., 8., 9., 10., 11., 12.]
  y = [3., 5., 8., 15., 20., 1., 2., 3., 4., 5., 6., 4.]

  store_data, 'original', data={x:t, y:y}
  tsmooth2, 'original', 5, newname = 'smooth'

  ylim, 'original', 0, 20
  ylim, 'smooth', 0, 20

  tplot, ['original', 'smooth']
  
  get_data, 'original', data=d0
  print, 'Original data:', d0.y
  get_data, 'smooth', data=d
  print, 'Smooth data:', d.y
  
  ; Results:
  ;Original data:    3.00000      5.00000      8.00000      15.0000      20.0000      1.00000      2.00000      3.00000      4.00000      5.00000      6.00000      4.00000
  ;Smooth data:      3.00000      5.00000      10.2000      9.80000      9.20000      8.20000      6.00000      3.00000      4.00000      4.40000      6.00000      4.00000
  
end


  • Python code:

import pytplot
from pyspedas.analysis.tsmooth import tsmooth


def ex_test_smooth():

    t = [1., 2., 3., 4., 5., 6., 7., 8., 9., 10., 11., 12.]
    y = [3., 5., 8., 15., 20., 1., 2., 3., 4., 5., 6., 4.]

    pytplot.store_data('original', data={'x': t, 'y': y})
    tsmooth('original', width=5, new_names='smooth', preserve_nans=1)

    pytplot.tplot(['original', 'smooth'])

    d0 = pytplot.get_data('original')
    print('Original data: ', d0[1])
    d = pytplot.get_data('smooth')
    print('Smooth data: ', d[1])

    """
    Results:
    Original data:[ 3., 5., 8.,   15., 20., 1.,  2., 3., 4., 5.,  6.,  4.]
    Smooth data:  [ 3., 5., 10.2, 9.8, 9.2, 8.2  6., 3., 4., 4.4, 6.,  4.]
    """

# Run the example code
ex_test_smooth()