# R Dataset / Package DAAG / leafshape17

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On this Picostat.com statistics page, you will find information about the leafshape17 data set which pertains to Subset of Leaf Shape Data Set. The leafshape17 data set is found in the DAAG R package. You can load the leafshape17 data set in R by issuing the following command at the console data("leafshape17"). This will load the data into a variable called leafshape17. If R says the leafshape17 data set is not found, you can try installing the package by issuing this command install.packages("DAAG") and then attempt to reload the data. If you need to download R, you can go to the R project website. You can download a CSV (comma separated values) version of the leafshape17 R data set. The size of this file is about 4,883 bytes. ## Subset of Leaf Shape Data Set## DescriptionThe ## Usageleafshape17 ## FormatThis data frame contains the following columns: - bladelen
leaf length (in mm) - petiole
a numeric vector - bladewid
leaf width (in mm) - latitude
latitude - logwid
natural logarithm of width - logpet
logarithm of petiole measurement - loglen
logarithm of length - arch
leaf architecture (0 = orthotropic, 1 = plagiotropic)
## SourceKing, D.A. and Maindonald, J.H. 1999. Tree architecture in relation to leaf dimensions and tree stature in temperate and tropical rain forests. Journal of Ecology 87: 1012-1024. ## Examplesprint("Discriminant Analysis - Example 11.2")require(MASS) leaf17.lda <- lda(arch ~ logwid+loglen, data=leafshape17) leaf17.hat <- predict(leaf17.lda) leaf17.lda table(leafshape17$arch, leaf17.hat$class) pause()tab <- table(leafshape17$arch, leaf17.hat$class) sum(tab[row(tab)==col(tab)])/sum(tab) leaf17cv.lda <- lda(arch ~ logwid+loglen, data=leafshape17, CV=TRUE) tab <- table(leafshape17$arch, leaf17cv.lda$class) pause()leaf17.glm <- glm(arch ~ logwid + loglen, family=binomial, data=leafshape17) options(digits=3) summary(leaf17.glm)$coef pause()leaf17.one <- cv.binary(leaf17.glm) table(leafshape17$arch, round(leaf17.one$internal)) # Resubstitution pause()table(leafshape17$arch, round(leaf17.one$cv)) # Cross-validation -- Dataset imported from https://www.r-project.org. |

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dataset-56989.csv | 4.77 KB |