我想繪製存儲在SpatialPixelsDataFrame對象中的克里格結果。使用spplot,它會自動創建一個包含var1.pred,var1.var和var1.stdev的圖。R:刪除SpatialPixelsDataFrame對象的插槽中的屬性
這很好,但我希望spplot函數只繪製var1.pred,這就是爲什麼我要刪除var1.var和var1.stdev(它們作爲屬性存儲在插槽@data中)的原因。
我不知道該怎麼做 - 任何人都可以幫忙嗎?提前致謝!
比方說,我的對象被稱爲「AA」,那麼這裏就是關於它的信息:
str(aa)
Formal class 'SpatialPixelsDataFrame' [package "sp"] with 7 slots
[email protected] data :'data.frame': 4986 obs. of 3 variables:
.. ..$ var1.pred : num [1:4986] 5.95 5.96 5.96 5.94 5.95 ...
.. ..$ var1.var : num [1:4986] 0.000445 0.0005 0.00072 0.008354 0.000917 ...
.. ..$ var1.stdev: num [1:4986] 0.0211 0.0224 0.0268 0.0914 0.0303 ...
[email protected] coords.nrs : int [1:2] 1 2
[email protected] grid :Formal class 'GridTopology' [package "sp"] with 3 slots
.. .. [email protected] cellcentre.offset: Named num [1:2] 0.139 0.408
.. .. .. ..- attr(*, "names")= chr [1:2] "x1" "x2"
.. .. [email protected] cellsize : Named num [1:2] 0.174 0.174
.. .. .. ..- attr(*, "names")= chr [1:2] "x1" "x2"
.. .. [email protected] cells.dim : Named int [1:2] 56 154
.. .. .. ..- attr(*, "names")= chr [1:2] "x1" "x2"
[email protected] grid.index : int [1:4986] 8604 8548 8492 8435 8436 8379 8380 8323 8324 8325 ...
[email protected] coords : num [1:4986, 1:2] 6.22 6.22 6.22 6.05 6.22 ...
.. ..- attr(*, "dimnames")=List of 2
.. .. ..$ : NULL
.. .. ..$ : chr [1:2] "x1" "x2"
[email protected] bbox : num [1:2, 1:2] 0.139 0.408 9.697 26.994
.. ..- attr(*, "dimnames")=List of 2
.. .. ..$ : chr [1:2] "x1" "x2"
.. .. ..$ : chr [1:2] "min" "max"
[email protected] proj4string:Formal class 'CRS' [package "sp"] with 1 slots
.. .. [email protected] projargs: chr NA