R Dataset / Package DAAG / fruitohms

Documentation

On this Picostat.com statistics page, you will find information about the fruitohms data set which pertains to Electrical Resistance of Kiwi Fruit. The fruitohms data set is found in the DAAG R package. You can load the fruitohms data set in R by issuing the following command at the console data("fruitohms"). This will load the data into a variable called fruitohms. If R says the fruitohms 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 fruitohms R data set. The size of this file is about 1,170 bytes.


Electrical Resistance of Kiwi Fruit

Description

Data are from a study that examined how the electrical resistance of a slab of kiwifruit changed with the apparent juice content.

Usage

fruitohms

Format

This data frame contains the following columns:

juice

apparent juice content (percent)

ohms

electrical resistance (in ohms)

Source

Harker, F. R. and Maindonald J.H. 1994. Ripening of nectarine fruit. Plant Physiology 106: 165 - 171.

Examples

plot(ohms ~ juice, xlab="Apparent juice content (%)",ylab="Resistance (ohms)", data=fruitohms)
lines(lowess(fruitohms$juice, fruitohms$ohms), lwd=2)
pause()require(splines)
attach(fruitohms)
plot(ohms ~ juice, cex=0.8, xlab="Apparent juice content (%)",
     ylab="Resistance (ohms)", type="n")
fruit.lmb4 <- lm(ohms ~ bs(juice,4))
ord <- order(juice)
lines(juice[ord], fitted(fruit.lmb4)[ord], lwd=2)
ci <- predict(fruit.lmb4, interval="confidence")
lines(juice[ord], ci[ord,"lwr"])
lines(juice[ord], ci[ord,"upr"])
--

Dataset imported from https://www.r-project.org.

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Attachment Size
dataset-12140.csv 1.14 KB
Dataset License
GNU General Public License v2.0
Documentation License
GNU General Public License v2.0