下面的代碼是從書「R在行動」,上市16.1:在R中,錯誤「需要至少一個面板」是什麼意思,以及如何解決它?
library(lattice)
attach(mtcars)
gear <- factor(gear, levels=c(3, 4, 5),
labels=c("3 gears", "4 gears", "5 gears"))
cyl <- factor(cyl, levels=c(4, 6, 8),
labels=c("4 cylinders", "6 cylinders", "8 cylinders"))
densityplot(~mpg,
main="Density Plot",
xlab="Miles per Gallon")
densityplot(~mpg | cyl,
main="Density Plot by Number of Cylinders",
xlab="Miles per Gallon")
bwplot(cyl ~ mpg | gear,main="Box Plots by Cylinders and Gears",
xlab="Miles per Gallon", ylab="Cylinders")
xyplot(mpg ~ wt | cyl * gear,
main="Scatter Plots by Cylinders and Gears",
xlab="Car Weight", ylab="Miles per Gallon")
cloud(mpg ~ wt * qsec | cyl,
main="3D Scatter Plots by Cylinders")
dotplot(cyl ~ mpg | gear,
main="Dot Plots by Number of Gears and Cylinders",
xlab="Miles Per Gallon")
splom(mtcars[c(1, 3, 4, 5, 6)],
main="Scatter Plot Matrix for mtcars Data")
detach(mtcars)
我只能夠繪製第一密度圖和最後的情節,splom(...)。其餘的陰謀給我以下錯誤:
Error in limits.and.aspect(default.prepanel, prepanel = prepanel, have.xlim = have.xlim, : need at least one panel
這個錯誤是什麼意思,我該如何解決它?
我剛開始學習R和我使用的版本是:
R version 3.1.0 (2014-04-10)
Platform: x86_64-w64-mingw32/x64 (64-bit)
locale:
[1] LC_COLLATE=English_Malaysia.1252 LC_CTYPE=English_Malaysia.1252
[3] LC_MONETARY=English_Malaysia.1252 LC_NUMERIC=C
[5] LC_TIME=English_Malaysia.1252
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] lattice_0.20-29
loaded via a namespace (and not attached):
[1] grid_3.1.0
編輯:
輸出搜索()是:
[1] ".GlobalEnv" "mtcars" "package:lattice"
[4] "package:stats" "package:graphics" "package:grDevices"
[7] "package:utils" "package:datasets" "package:methods"
[10] "Autoloads" "package:base"
你確定你跑了那些嗎?他們爲我工作。也許重新啓動你的R會話,然後重試。這些示例顯示了將data.frame附加到搜索路徑的錯誤做法,而不是將它作爲繪圖函數的參數,因此我不確定這是一個很好的學習方法。此外,'sessionInfo()'的輸出將比版本信息更有用。 – MrFlick
如果您嘗試使用'densityplot(〜mpg | cyl,mtcars,main =「密度圖的圓柱體數量」,xlab =「每加侖數英里數」),則會發生什麼情況。那樣有用嗎?忘記附加data.frame。 – MrFlick
@MFFlick是的,我跑了那些。可以肯定的是,我關閉了R,打開了它,將上面的代碼複製到一個新的腳本中,選擇了所有代碼並使用Ctrl + R運行它。錯誤仍然出現 – mauna