English, Article edition: CIPOLATE: Stata module for cubic interpolation Nicholas J. Cox

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Bookmark: http://trove.nla.gov.au/version/175062
Physical Description
  • code
Language
  • English

Edition details

Title
  • CIPOLATE: Stata module for cubic interpolation
Author
  • Nicholas J. Cox
Physical Description
  • code
Notes
  • cipolate creates newvar =​ yvar where yvar is not missing and fills in newvar with cubicly interpolated values of yvar where yvar is missing. Interpolated values are based on exact fitting of a cubic curve to two data points before and two data points after each observation for which yvar is missing. cipolate will thus produce missing values whenever fewer than two data points are present on either side. Note that this is not a spline method. Extrapolation is not provided, mainly because of reservations about the general (and even particular) wisdom of extrapolating cubics into the unknown. Some users may wish to extrapolate any remaining missing values linearly using ipolate.
  • cubic interpolation, Lagrange, ipolate, missing values
  • RePEc:boc:bocode:s426202
Language
  • English
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