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A Resampling data with errors

  1. Apr 11, 2017 #1
    I need to resample a set of data and its errors linearly in log space, with the same number of points. I was just going to interpolate between points to get the data - but how do I calculate the errors?
     
    Last edited: Apr 11, 2017
  2. jcsd
  3. Apr 12, 2017 #2
    what do you mean with "resample" if then you talk about interpolating them?
     
  4. Apr 12, 2017 #3
    If you're interpolating data points, why not interpolate their errors? The errors produce two additional sets of data points above/below the original data. Treat them the same way you're treating your original data.

    I assume the "data" are from a numerical simulation? Otherwise it is probably not legit to interpolate experimental errors.
     
  5. Apr 15, 2017 #4
    Its experimental errors in astronomy in a spectra. It seems to be quite a commonly done thing - rebinning from linear wavelength to logarithmic whilst maintaining the overall signal to noise. Given that it is "non legit" I should have probably asked in the physics rather than maths forum!

    For example I have done it using this IRAF package. http://drforum.gemini.edu/wp-content/uploads/2014/05/README.txt
     
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