eggs | R Documentation |
The data consist of the egg boundary data of nine species of birds.
data(eggs)
In the data set, there are four columns of variables: Code
, LatinName
, x
, and y
.
Code
saves the codes of individual eggs;
LatinName
saves the Latin names of the nine species of birds;
x
saves the x
coordinates of the egg boundary in the Cartesian coordinate system (cm);
and y
saves the y
coordinates of the egg boundary in the Cartesian coordinate system (cm).
In Code
, codes 1-9 represent Strix uralensis, Dromaius novaehollandiae,
Turdus philomelos, Gallus gallus, Pandion haliaetus, Uria aalge,
Uria lomvia, Gallinago media, and Aptenodytes patagonicus, respectively.
Narushin, V.G., Romanov, M.N., Griffin, D.K. (2021) Egg and math: introducing a universal formula for egg shape.
Annals of the New York Academy of Sciences 1505, 169-
177. \Sexpr[results=rd]{tools:::Rd_expr_doi("10.1111/nyas.14680")}
Shi, P., Gielis, J., Niklas, K.J. (2022) Comparison of a universal (but complex) model for avian egg
shape with a simpler model. Annals of the New York Academy of Sciences 1514, 34-
42. \Sexpr[results=rd]{tools:::Rd_expr_doi("10.1111/nyas.14799")}
Tian, F., Wang, Y., Sandhu, H.S., Gielis, J., Shi, P. (2020) Comparison of seed morphology of two ginkgo cultivars.
Journal of Forestry Research 31, 751-
758. \Sexpr[results=rd]{tools:::Rd_expr_doi("10.1007/s11676-018-0770-y")}
data(eggs)
uni.C <- sort( unique(eggs$Code) )
ind <- 8
Data <- eggs[eggs$Code==uni.C[ind], ]
x0 <- Data$x
y0 <- Data$y
Res1 <- adjdata(x0, y0, ub.np=1000, times=1.2, len.pro=1/20)
x1 <- Res1$x
y1 <- Res1$y
dev.new()
plot( x1, y1, asp=1, cex.lab=1.5, cex.axis=1.5, type="l",
xlab=expression(italic("x")), ylab=expression(italic("y")),
pch=1, col=1 )
Res2 <- adjdata(x0, y0, ub.np=60, times=1, len.pro=1/2, index.sp=20)
x2 <- Res2$x
y2 <- Res2$y
Res3 <- adjdata(x0, y0, ub.np=60, times=1, len.pro=1/2, index.sp=100)
x3 <- Res3$x
y3 <- Res3$y
dev.new()
plot( x2, y2, asp=1, cex.lab=1.5, cex.axis=1.5,
xlab=expression(italic("x")), ylab=expression(italic("y")),
pch=1, col=4 )
points( x3, y3, col=2)
graphics.off()
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.