drosera: Leaf and petiole size for three African sundew species

In r-link/corrmorant: Flexible Correlation Matrices Based on 'ggplot2'

Description

Includes measurements for leaf blade and petiole length and width for Drosera capensis (typical and red form), Drosera madagascarienis (typical form) and Drosera venusta (typical and athocyanin-reduced form).

Usage

drosera

Format

A data.frame with 150 rows and 6 variables:

species

a factor denoting the sundew species (Drosera capensis, madagascariensis and venusta)

variety

a factor denoting the variety ("typical" and "rubra" for D. capensis, "typical" and "alba" for D. venusta and "typical" for D. madagascariensis)

petiole_length

a numeric denoting petiole length in millimeters

petiole_width

a numeric denoting petiole width in millimeters

blade_length

a numeric denoting leaf blade length in millimeters

blade_width

an numeric denoting leaf blade width in millimeters

Details

The drosera dataset contains 150 observations of leaf and petiole size for five varieties of three African sundew species: the typical and red forms of Drosera capensis, the typical form of Drosera madagascarienis and the typical and anthocyanin-reduced forms Drosera venusta. The measurements were performed in July 2020 on plants growing on my (R.M. Link's) windowsill in a matter of a couple of hours with a regular caliper and therefore do not necessarily live up to high levels of scientific rigor. However, when it comes to illustrating correlation between biometric variables, the dataset does its job, and therefore can be used as an replacement for the iris dataset by Edgar Anderson and Ronald A. Fisher, which has a problematic past due to its publication in the Annals of Eugenics.

The drosera dataset is available as a separate data package under https://github.com/r-link/drosera. It is published under a Creative Commons Zero license and is therefore free for all kinds of commercial and non-commercial use. In particular, if you need a replacement dataset for iris for the examples in your R package, feel free to add drosera to the package without any additional precautions.

However, it would be kind if you add a link to the package's Github page in case you decide to use it (and maybe drop me a line so I can link your project in the repository), but I won't be mad if you don't.

r-link/corrmorant documentation built on Jan. 10, 2021, 7:26 p.m.