wheat(spdep)
wheat()所属R语言包:spdep
Mercer and Hall wheat yield data
默瑟和霍尔小麦产量数据
译者:生物统计家园网 机器人LoveR
描述----------Description----------
Mercer and Hall wheat yield data, based on version in Cressie (1993), p. 455.
美世和霍尔小麦产量数据,根据经验Cressie(1993年),P的版本。 455。
用法----------Usage----------
data(wheat)
格式----------Format----------
The format of the object generated by running data(wheat) is a three column data frame made available by Hongfei Li. The example section shows how to convert this to the object used in demonstrating the aple function, and is a: Formal class 'SpatialPolygonsDataFrame' [package "sp"] with 5 slots; the data slot is a data frame with 500 observations on the following 6 variables.
由运行data(wheat)是一个三列的数据框由鸿飞李的对象生成的格式。 “示例”部分显示了如何转换使用展示aple功能的对象,是一个正式的类的SpatialPolygonsDataFrame“包”SP“5个插槽的数据槽是一个数据框500以下6个变量的观察。
lat local coordinates northings ordered north to south
lat局部坐标北向有序北到南
yield Mercer and Hall wheat yield data
yield的Mercer和霍尔小麦产量数据
r rows south to north; levels in distance units of plot centres
r行南到北,图中心的水平距离单位
c columns west to east; levels in distance units of plot centres
c列西向东的图中心的水平距离单位
lon local coordinates eastings
lon局部坐标系东进
lat1 local coordinates northings ordered south to north
lat1局部坐标下令南到北的北向
源----------Source----------
Cressie, N. A. C. (1993) Statistics for Spatial Data. Wiley, New York, p. 455.
空间数据的经验Cressie,的NAC(1993年)统计。 Wiley,纽约,第455。
参考文献----------References----------
实例----------Examples----------
## Not run: [#不运行:]
data(wheat)
names(wheat) <- c('lon','lat','yield')
wheat$lat1 <- 69 - wheat$lat
wheat$r <- factor(wheat$lat1)
wheat$c <- factor(wheat$lon)
wheat_sp <- wheat
coordinates(wheat_sp) <- c("lon", "lat1")
wheat_spg <- wheat_sp
gridded(wheat_spg) <- TRUE
wheat_spl <- as(wheat_spg, "SpatialPolygons")
df <- as(wheat_spg, "data.frame")
row.names(df) <- sapply(slot(wheat_spl, "polygons"),
function(x) slot(x, "ID"))
wheat <- SpatialPolygonsDataFrame(wheat_spl, data=df)
## End(Not run)[#(不执行)]
wheat <- readShapeSpatial(system.file("etc/shapes/wheat.shp",
package="spdep")[1])
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。
|