ethanol(lattice)
ethanol()所属R语言包:lattice
Engine exhaust fumes from burning ethanol
从燃烧的乙醇发动机废气
译者:生物统计家园网 机器人LoveR
描述----------Description----------
Ethanol fuel was burned in a single-cylinder engine. For various settings of the engine compression and equivalence ratio, the emissions of nitrogen oxides were recorded.
乙醇燃料在单缸发动机被烧毁。对于发动机的压缩和量比的各种设置,氮氧化物的排放量进行了记录。
用法----------Usage----------
格式----------Format----------
A data frame with 88 observations on the following 3 variables.
与88以下3个变量的观测数据框。
NOx Concentration of nitrogen oxides (NO and NO2) in
NOx浓度的氮氧化物(NO和NO2)
C Compression ratio of the engine.
C的发动机的压缩比。
E Equivalence ratio–a measure of the richness of the air and
é等价比例的措施和丰富的空气
作者(S)----------Author(s)----------
Documentation contributed by Kevin Wright.
源----------Source----------
Brinkman, N.D. (1981) Ethanol Fuel—A Single-Cylinder Engine Study of Efficiency and Exhaust Emissions. SAE transactions, 90, 1410–1424.
布林克曼,ND(1981)燃料乙醇的效率和废气排放的单缸发动机研究。 SAE的交易,90,1410至1424年。
参考文献----------References----------
Summit, New Jersey.
举例----------Examples----------
## Constructing panel functions on the fly[#构建动态面板功能]
EE <- equal.count(ethanol$E, number=9, overlap=1/4)
xyplot(NOx ~ C | EE, data = ethanol,
prepanel = function(x, y) prepanel.loess(x, y, span = 1),
xlab = "Compression ratio", ylab = "NOx (micrograms/J)",
panel = function(x, y) {
panel.grid(h=-1, v= 2)
panel.xyplot(x, y)
panel.loess(x,y, span=1)
},
aspect = "xy")
# Wireframe loess surface fit. See Figure 4.61 from Cleveland.[线框黄土表面适合。见图4.61克利夫兰。]
require(stats)
with(ethanol, {
eth.lo <- loess(NOx ~ C * E, span = 1/3, parametric = "C",
drop.square = "C", family="symmetric")
eth.marginal <- list(C = seq(min(C), max(C), length.out = 25),
E = seq(min(E), max(E), length.out = 25))
eth.grid <- expand.grid(eth.marginal)
eth.fit <- predict(eth.lo, eth.grid)
wireframe(eth.fit ~ eth.grid$C * eth.grid$E,
shade=TRUE,
screen = list(z = 40, x = -60, y=0),
distance = .1,
xlab = "C", ylab = "E", zlab = "NOx")
})
转载请注明:出自 生物统计家园网(http://www.biostatistic.net)。
注:
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