Snails#

Features of the grove snail cepaea nemoralis collected by Cain and Sheppard near Oxford, England in 1949.

From the authors: “The purpose of this paper is to describe an investigation into this problem of the relative importance of selection and drift in determining the distribution of different colour and banding patterns in C. nemorali”

Initialization#

library(fosdata)
data <- fosdata::snails

Accessing fields#

data <- fosdata::snails
Banding <- data$Banding # Just a random field in the dataset

Interactive R Sample#

You can use the R editor below to interactively explore the dataset and generate plots. This contains a fully self-contained R environment with fosdata, ggplot2, and dplyr loaded.

webR + fosdata Test

Console

Plot

No plot generated yet.

LLM instructions#

If using an LLM, you can copy-paste the following instructions to accompany your prompt to inform the model of the fields and their types in the dataset.

LLM Instructions

The fosdata::snails dataset containing the following fields:

fields[5]{name,type,values}:
  Location,character,n/a
  Habitat,factor,n/a
  Color,factor,[Yellow,Pink,Brown]
  Banding,factor,[X00000,X00300,X12345,Others]
  Count,integer,n/a

Fields#

Name	Description	Type	Min	Max	Values
`Location`	Collection site.	character	-	-	-
`Habitat`	Ecological features of collection site.	factor	-	-	-
`Color`	Snail shell color.	factor	-	-	`Yellow`, `Pink`, `Brown`
`Banding`	Type of shell banding. X00000 is unbanded. X00300 has one wide band. X12345 has five bands.	factor	-	-	`X00000`, `X00300`, `X12345`, `Others`
`Count`	Count of snails in this category.	integer	-	185	-

Source#

Cain, A., Sheppard, P. Selection in the polymorphic land snail Cepæa nemoralis. Heredity 4, 275–294 (1950). Data is from Table 6. https://doi.org/10.1038/hdy.1950.22