barley(lattice)
barley()所属R语言包：lattice
Yield data from a Minnesota barley trial
从明尼苏达州大麦试验产量数据
译者：生物统计家园网 机器人LoveR
描述----------Description----------
Total yield in bushels per acre for 10 varieties at 6 sites in each of two years.
总收率在每蒲式耳为两年，每6个站点10个品种。
用法----------Usage----------
格式----------Format----------
A data frame with 120 observations on the following 4 variables.
一个120以下4个变量的观测数据框。
yield Yield (averaged across three blocks) in bushels/acre.
蒲式耳/英亩，产量产量（平均横跨三个街区）。
variety Factor with levels "Svansota", "No. 462", "Manchuria", "No. 475", "Velvet", "Peatland", "Glabron", "No. 457",
各种因素与水平"Svansota"，"No. 462"，"Manchuria"，"No. 475"，"Velvet"，"Peatland"，"Glabron"，"No. 457" ，
year Factor with levels 1932, 1931
今年因子与水平1932，1931
site Factor with 6 levels: "Grand Rapids", "Duluth", "University Farm", "Morris",
立地因子与6个级别："Grand Rapids"，"Duluth"，"University Farm"，"Morris"
Details
详情----------Details----------
These data are yields in bushels per acre, of 10 varieties of barley grown in 1/40 acre plots at University Farm, St. Paul, and at the five branch experiment stations located at Waseca, Morris, Crookston, Grand Rapids, and Duluth (all in Minnesota). The varieties were grown in three randomized blocks at each of the six stations during 1931 and 1932, different land being used each year of the test.
这些数据蒲式耳，单产为每英亩10在1/40英亩的图种植的大麦品种，圣保罗大学农场，和位于莫里斯Waseca，克鲁克斯顿，大急流城，并德卢斯的五个分支实验站的，（在明尼苏达州）。品种1931年和1932年期间，在六站每三个随机块种植不同的土地被用来测试每年。
Immer et al. (1934) present the data for each Year*Site*Variety*Block. The data here is the average yield across the three blocks.
音麦等人。 （1934）提出，每年的数据*网站*品种*座。这里的数据是横跨三个街区的平均产量。
Immer et al. (1934) refer (once) to the experiment as being conducted in 1930 and 1931, then later refer to it (repeatedly) as being conducted in 1931 and 1932. Later authors have continued the confusion.
音麦等人。 （1934年）参考（曾经）在1930年和1931年进行的实验，后来指（反复）在1931年和1932年进行。后来，作者们继续混乱。
Cleveland (1993) suggests that the data for the Morris site may have had the years switched.
克利夫兰（1993年）表明，莫里斯网站的数据可能有多年切换。
作者（S）----------Author(s)----------
Documentation contributed by Kevin Wright.
源----------Source----------
Immer, R. F., H. K. Hayes, and LeRoy Powers. (1934). Statistical Determination of Barley Varietal Adaptation. Journal of the American Society of Agronomy, 26, 403–419.
音麦，R.楼H. K.·海斯，勒罗伊和权力。 （1934年）。大麦品种适应的统计测定。中国农学院，26，403-419美国社会。
参考文献----------References----------
Summit, New Jersey.
York, 9th edition.
参见----------See Also----------
immer in the MASS package for data from the same experiment
immer在从相同的实验数据的质量包
举例----------Examples----------
# Graphic suggesting the Morris data switched the years 1931 and 1932[图形显示莫里斯数据交换1931年和1932年]
# Figure 1.1 from Cleveland[图1.1从克利夫兰]
dotplot(variety ~ yield | site, data = barley, groups = year,
key = simpleKey(levels(barley$year), space = "right"),
xlab = "Barley Yield (bushels/acre) ",
aspect=0.5, layout = c(1,6), ylab=NULL)
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。
注2：由于是机器人自动翻译，难免有不准确之处，使用时仔细对照中、英文内容进行反复理解，可以帮助R语言的学习。
注3：如遇到不准确之处，请在本贴的后面进行回帖，我们会逐渐进行修订。
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发表于 2012-2-16 21:08:46
