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ShapeR: An R Package to Study Otolith Shape Variation among Fish Populations

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  • Lísa Anne Libungan
  • Snæbjörn Pálsson

Abstract

ShapeR is an open source software package that runs on the R platform and is specifically designed to study otolith shape variation among fish populations. The package extends previously described software used for otolith shape analysis by allowing the user to automatically extract closed contour outlines from a large number of images, perform smoothing to eliminate pixel noise, choose from conducting either a Fourier or Wavelet transform to the outlines and visualize the mean shape. The output of the package are independent Fourier or Wavelet coefficients which can be directly imported into a wide range of statistical packages in R. The package might prove useful in studies of any two dimensional objects.

Suggested Citation

  • Lísa Anne Libungan & Snæbjörn Pálsson, 2015. "ShapeR: An R Package to Study Otolith Shape Variation among Fish Populations," PLOS ONE, Public Library of Science, vol. 10(3), pages 1-12, March.
    • Handle: RePEc:plo:pone00:0121102
    DOI: 10.1371/journal.pone.0121102
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