Dear Violette,
Search for elliptical Fourier analysis. RSiteSearch("elliptical fourier
analysis")
Best regards,
Thierry
ir. Thierry Onkelinx
Instituut voor natuur- en bosonderzoek / Research Institute for Nature and
Forest
team Biometrie & Kwaliteitszorg / team Biometrics & Quality Assurance
Kliniekstraat 25
1070 Anderlecht
Belgium
+ 32 2 525 02 51
+ 32 54 43 61 85
thierry.onkel...@inbo.be
www.inbo.be
To call in the statistician after the experiment is done may be no more than
asking him to perform a post-mortem examination: he may be able to say what the
experiment died of.
~ Sir Ronald Aylmer Fisher
The plural of anecdote is not data.
~ Roger Brinner
The combination of some data and an aching desire for an answer does not ensure
that a reasonable answer can be extracted from a given body of data.
~ John Tukey
-----Oorspronkelijk bericht-----
Van: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] Namens
Violette BERTRAND
Verzonden: donderdag 6 maart 2014 22:52
Aan: r-help@r-project.org
Onderwerp: [R] shapes of woodpeckers' cavities
Hi,
I have pictures (.png) of the shape of many entrances of woodpeckers’ cavities,
coloured in black. I want that R takes these pictures and stacks (superimposes)
all the shapes to determine the tendency of the shape of cavities for each
species of woodpecker.
I currently use the package EBImage which determine the mean radius of the
shape of entrances (the shape is divided in 8 parts, and the package measure
the mean radius for each part). So this package uses only the mean radius for
each part of the shape.
But, I would like that R use the real shape of cavities. Is another package
exists, which will use the real shape of my pictures ?
Thanks,
* * * * * * * * * * * * * D I S C L A I M E R * * * * * * * * * * * * *
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