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
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+ 32 54 43 61 85
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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.
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-----Oorspronkelijk bericht-----
Van: [email protected] [mailto:[email protected]] Namens
Violette BERTRAND
Verzonden: donderdag 6 maart 2014 22:52
Aan: [email protected]
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,
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