nutrindicator: A grid stack map of indicators for crop fertility...

In soilassessment: Assessment Models for Agriculture Soil Conditions and Crop Suitability

A grid stack map of indicators for crop fertility requirements

Description

A grid stack map of eleven variables for assessing soil fertility

Usage

data("nutrindicator")

Format

Formal class 'SpatialGridDataFrame' [package "sp"] with 4 slots ..@ data :'data.frame': 16900 obs. of 11 variables: .. ..$ soc : num [1:16900] 0.163 0.242 0.233 0.218 0.179 ... .. ..$ nitrogen : num [1:16900] 0.0272 0.0242 0.0266 0.0275 0.0256 ... .. ..$ phosphorus: num [1:16900] 9.4 8.22 8.92 7.45 8.3 ... .. ..$ manganese : num [1:16900] 2.84 2.7 2.95 2.88 3.19 ... .. ..$ potassium : num [1:16900] 93.2 102.3 93.5 96.5 87.8 ... .. ..$ cec : num [1:16900] 10.9 10.7 10 10.1 10.2 ... .. ..$ boron : num [1:16900] 0.172 0.16 0.171 0.172 0.174 ... .. ..$ copper : num [1:16900] 0.368 0.421 0.37 0.369 0.412 ... .. ..$ iron : num [1:16900] 0.238 0.231 0.241 0.239 0.242 ... .. ..$ zinc : num [1:16900] 0.816 0.652 0.816 0.818 0.814 ... .. ..$ sulfur : num [1:16900] 153 131 119 135 163 ... ..@ grid :Formal class 'GridTopology' [package "sp"] with 3 slots .. .. ..@ cellcentre.offset: Named num [1:2] 383216 3341506 .. .. .. ..- attr(*, "names")= chr [1:2] "x" "y" .. .. ..@ cellsize : num [1:2] 357 357 .. .. ..@ cells.dim : int [1:2] 130 130 ..@ bbox : num [1:2, 1:2] 383038 3341327 429478 3387767 .. ..- attr(*, "dimnames")=List of 2 .. .. ..$ : chr [1:2] "x" "y" .. .. ..$ : chr [1:2] "min" "max" ..@ proj4string:Formal class 'CRS' [package "sp"] with 1 slot .. .. ..@ projargs: chr "+proj=utm +zone=41 +datum=WGS84 +units=m +no_defs"

Examples

data(nutrindicator)
str(nutrindicator)
#spplot(nutrindicator["nitrogen"])

soilassessment documentation built on July 9, 2023, 7:40 p.m.