case1002(Sleuth2)
case1002()所属R语言包:Sleuth2
The Energy Costs of Echolocation by Bats
蝙蝠的回声定位声波的能源成本
译者:生物统计家园网 机器人LoveR
描述----------Description----------
The data are on in–flight energy expenditure and body mass from 20 energy studies on three types of flying vertebrates: echolocating bats, non–echolocating bats and non–echolocating birds.
这些数据是从20个能源研究三种类型的飞行脊椎动物在飞行中的能量消耗和体重:回声定位蝙蝠,非回声定位蝙蝠和非回声定位的鸟类。
用法----------Usage----------
case1002
格式----------Format----------
A data frame with 20 observations on the following 4 variables.
与20个观察值的以下4个变量的数据框。
Speciesspecies
Species种
Massmass (in grams)
Mass质量(单位:克)
Typea factor with 3 levels indicating the type of flying vertebrate
Type3级指示飞行的脊椎动物的类型的一个因素
Energyin–flight energy expenditure (in W)
Energy在飞行中的能量消耗(单位:W)
源----------Source----------
Ramsey, F.L. and Schafer, D.W. (2002). The Statistical Sleuth: A Course in Methods of Data Analysis (2nd ed), Duxbury.
拉姆齐,F.L.和Schafer,D.W. (2002年)。的统计的猎犬:A课程方法的数据分析(第二版),达克斯伯里。
参考文献----------References----------
Speakman, J.R. and Racey, P.A. (1991). No cost of Echolocation for Bats in Flight, Nature 350: 421–423.
实例----------Examples----------
str(case1002)
plot(log(Energy)~log(Mass), case1002,
pch = ifelse(Type=="echolocating bats", 19,
ifelse(Type=="non-echolocating birds", 21, 24)))
plot(Energy~Mass, case1002, log="xy",
xlab = "Body Mass (g) (log scale)",
ylab = "Energy Expenditure (W) (log scale)",
pch = ifelse(Type=="echolocating bats", 19,
ifelse(Type=="non-echolocating birds", 21, 24)))
legend(7, 50, pch=c(24, 21, 19),
c("Non-echolocating bats", "Non-echolocating birds","Echolocating bats"))
library(lattice)
yticks <- c(1,2,5,10,20,50)
xticks <- c(10,20,50,100,200,500)
xyplot(Energy ~ Mass, case1002, groups=Type,
scales = list(log=TRUE, y=list(at=yticks), x=list(at=xticks)),
ylab = "Energy Expenditure (W) (log scale)",
xlab = "Body Mass (g) (log scale)",
auto.key = list(x = 0.2, y = 0.9, corner = c(0, 1), border = TRUE))
转载请注明:出自 生物统计家园网(http://www.biostatistic.net)。
注:
注1:为了方便大家学习,本文档为生物统计家园网机器人LoveR翻译而成,仅供个人R语言学习参考使用,生物统计家园保留版权。
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