私は大学院生のセカンドセミナーでRを勉強し始めました。ここでは多くのことを理解することは難しいです。私が正しい方向に向けることができれば幸いです。Rプログラムのエラーが多すぎます
最初に私はなぜラインがエラーを出しているのか分からなかったので、彼らは私のRのインストールになかったパッケージをロードしようとしていると思ったので、私はそれらを手に入れました。また、私に与えられたデータがauto_mpg.txtという名前のファイルに格納されていることもわかりました。しかし、その行の後のエラーは私が理解するのが難しいです。
これを理解してもらえますか?出発点として
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[Workspace loaded from ~/R/my_project/.RData]
> #################################################################
> ################# NIKITA TIWARI ############################
> #################################################################
> ################# DATA SUMMARY PJ1 ############################
> ## mpg cyl wt region
> ## Min. : 9.00 Min. :3.000 Min. :1613 Min. :1.000
> ## 1st Qu.:17.50 1st Qu.:4.000 1st Qu.:2224 1st Qu.:1.000
> ## Median :23.00 Median :4.000 Median :2804 Median :1.000
> ## Mean :23.51 Mean :5.455 Mean :2970 Mean :1.573
> ## 3rd Qu.:29.00 3rd Qu.:8.000 3rd Qu.:3608 3rd Qu.:2.000
> ## Max. :46.60 Max. :8.000 Max. :5140 Max. :3.000
> ##
> ## model
> ## ford pinto : 6
> ## amc matador : 5
> ## ford maverick : 5
> ## toyota corolla: 5
> ## amc gremlin : 4
> ## amc hornet : 4
> ## (Other) :369
> #################################################################
> #################################################################
>
> require(gridExtra) #given to me
Loading required package: gridExtra
Warning message:
package ‘gridExtra’ was built under R version 3.4.2
> require(ggplot2) #given to me
Loading required package: ggplot2
Warning message:
package ‘ggplot2’ was built under R version 3.4.2
>
>
> auto <- read.table("auto_mpg.txt", sep="\t", header = TRUE) #given to me
> head(auto)
mpg.............cyl..............wt...........region
1 Min. : 9.00 Min. :3.000 Min. :1613 Min. :1.000
2 1st Qu.:17.50 1st Qu.:4.000 1st Qu.:2224 1st Qu.:1.000
3 Median :23.00 Median :4.000 Median :2804 Median :1.000
4 Mean :23.51 Mean :5.455 Mean :2970 Mean :1.573
5 3rd Qu.:29.00 3rd Qu.:8.000 3rd Qu.:3608 3rd Qu.:2.000
6 Max. :46.60 Max. :8.000 Max. :5140 Max. :3.000
> summary(auto) #given to me
mpg.............cyl..............wt...........region
1st Qu.:17.50 1st Qu.:4.000 1st Qu.:2224 1st Qu.:1.000 :1
3rd Qu.:29.00 3rd Qu.:8.000 3rd Qu.:3608 3rd Qu.:2.000 :1
Max. :46.60 Max. :8.000 Max. :5140 Max. :3.000 :1
Mean :23.51 Mean :5.455 Mean :2970 Mean :1.573 :1
Median :23.00 Median :4.000 Median :2804 Median :1.000 :1
Min. : 9.00 Min. :3.000 Min. :1613 Min. :1.000 :1
>
>
> auto$cyl <- as.factor(auto$cyl)
Error in `$<-.data.frame`(`*tmp*`, cyl, value = integer(0)) :
replacement has 0 rows, data has 6
> auto$region <- as.factor(auto$region)
Error in `$<-.data.frame`(`*tmp*`, region, value = integer(0)) :
replacement has 0 rows, data has 6
> auto$cyl[auto$cyl == 1] <- "USA"
Error in `$<-.data.frame`(`*tmp*`, cyl, value = character(0)) :
replacement has 0 rows, data has 6
> auto$cyl[auto$cyl == 2] <- "EUR"
Error in `$<-.data.frame`(`*tmp*`, cyl, value = character(0)) :
replacement has 0 rows, data has 6
> auto$cyl[auto$cyl == 3] <- "ASIA"
Error in `$<-.data.frame`(`*tmp*`, cyl, value = character(0)) :
replacement has 0 rows, data has 6
> auto$region[auto$region == 1] <- "USA"
Error in `$<-.data.frame`(`*tmp*`, region, value = character(0)) :
replacement has 0 rows, data has 6
> auto$region[auto$region == 2] <- "EUR"
Error in `$<-.data.frame`(`*tmp*`, region, value = character(0)) :
replacement has 0 rows, data has 6
> auto$region[auto$region == 3] <- "ASIA"
Error in `$<-.data.frame`(`*tmp*`, region, value = character(0)) :
replacement has 0 rows, data has 6
>
> auto$cyl <- factor(auto$cyl, levels=c("USA","EUR","ASIA"))
Error in `$<-.data.frame`(`*tmp*`, cyl, value = integer(0)) :
replacement has 0 rows, data has 6
> auto$region <- factor(auto$region, levels=c("USA","EUR","ASIA"))
Error in `$<-.data.frame`(`*tmp*`, region, value = integer(0)) :
replacement has 0 rows, data has 6
> summary(auto)
mpg.............cyl..............wt...........region
1st Qu.:17.50 1st Qu.:4.000 1st Qu.:2224 1st Qu.:1.000 :1
3rd Qu.:29.00 3rd Qu.:8.000 3rd Qu.:3608 3rd Qu.:2.000 :1
Max. :46.60 Max. :8.000 Max. :5140 Max. :3.000 :1
Mean :23.51 Mean :5.455 Mean :2970 Mean :1.573 :1
Median :23.00 Median :4.000 Median :2804 Median :1.000 :1
Min. : 9.00 Min. :3.000 Min. :1613 Min. :1.000 :1
>
> ###################################################################
> # calculate the mean mpg for cars, broken out by the number of
> # cylinders in the car.
> ###################################################################
>
>
> ###################################################################
> #Provide a description of what you notice above
> ###################################################################
> # write a line describing the purpose of the next code chunk
> ###################################################################
>
>
> ###################################################################
> #provide a dsecriptiojn of what you notice above
> ###################################################################
> # Histograms
> ###################################################################
> # the next chunk of code is creating bar graphs and filling them
> # with either region or cyl , with count on the y axis and
> # mpg on the x axis
> ###################################################################
> ggplot(auto, aes(x = mpg, y = count, fill = cyl)) + geom_bar()
Don't know how to automatically pick scale for object of type tbl_df/tbl/data.frame. Defaulting to continuous.
Error in FUN(X[[i]], ...) : object 'count' not found
> ggplot(auto, aes(x = mpg, y = count, fill = region)) + geom_bar()
Don't know how to automatically pick scale for object of type tbl_df/tbl/data.frame. Defaulting to continuous.
Error in FUN(X[[i]], ...) : object 'count' not found
> ###################################################################
> # provide a description of what you notice above
> ###################################################################
> # write a line describe the purpose of the next chunck of code
> ###################################################################
> b1 <- ggplot(auto, aes(x=cyl, fill=cyl)) + geom_bar()
> b2 <- ggplot(auto, aes(x=region, fill=region)) + geom_bar()
> ###################################################################
> # the above code is used to creat a specific bar graph and it's
> # x axis is the same a the fill so that it is more clear
> ###################################################################
> # the next chunck of code is used to fill the graph with the bars
> ###################################################################
> b3 <- ggplot(auto, aes(x = cyl, fill = region)) + geom_bar(position = "fill")
> b4 <- ggplot(auto, aes(x = region, fill = cyl)) + geom_bar(position = "fill")
> grid.arrange(b1, b2 ,b3, b4, ncol= 4)
Error in FUN(X[[i]], ...) : object 'cyl' not found
> ###################################################################
> # provide a description of what you notice above
> ###################################################################
> # the code below is going to make box plots of the data
> ###################################################################
> bp1 <- ggplot (auto, aes(x = cyl, y = mpg, fill = cyl)) + geom_boxplot()
> bp2 <- ggplot (auto, aes(x = region, y = mpg, fill = region)) + geom_boxplot()
> grid.arrange(bp1, bp2, ncol = 2)
Don't know how to automatically pick scale for object of type tbl_df/tbl/data.frame. Defaulting to continuous.
Error in FUN(X[[i]], ...) : object 'cyl' not found
> ###################################################################
> # provide a description of what you notice above
> ###################################################################
> # the code below is going to make box plots of the data spilt into
> # 3, 4, ,5, 6, 8 data with mpg being y axis, region being x axis
> # and region being the fill
> ###################################################################
>
>
>
>
> ###################################################################
> # provide a description of what you notice above
> ###################################################################
> # the code below is going to a jitter plot so basically its just a
> # lot dots on a graph
> ###################################################################
> jp1 <- ggplot (auto, aes(x = wt, y = mpg, fill = cyl)) + geom_jitter()
> jp2 <- ggplot (auto, aes(x = wt, y = mpg, fill = region)) + geom_jitter()
> grid.arrange(jp1, jp2, ncol = 2)
Don't know how to automatically pick scale for object of type tbl_df/tbl/data.frame. Defaulting to continuous.
Error in FUN(X[[i]], ...) : object 'wt' not found
> ###################################################################
> # provide a description of what you notice above
> ###################################################################
> # the code below is going to a jitter plot but separate the graphs
> # into the different regions and only that region shows up on the
> # graph
> ###################################################################
> fg1 <- ggplot (auto, aes(x = wt, y = mpg, fill = cyl)) + geom_jitter()
> + facet_grid(region)
Error in facet_grid(region) : object 'region' not found
> fg1
Don't know how to automatically pick scale for object of type tbl_df/tbl/data.frame. Defaulting to continuous.
Error in FUN(X[[i]], ...) : object 'wt' not found
>
>
> ###################################################################
> # provide a description of what you notice above
> ###################################################################
> # the code below is going to a jitter plot but separate the graphs
> # into the different regions and into different cyl and only that
> # cyl and that region show up in that graph
> ###################################################################
>
本当にそのファイルを読み込む必要がありますか?これは、 'dataset'が組み込まれた' base R'データセットである 'mtcars'に似ている' summary(dataset) 'の結果と思われます。私はあなたの先生に相談して、あなたの質問をするべきであると信じています。 –
こんにちは、私はこの行を行ごとにしようとしています。上記はコード全体を実行した結果です。したがって、例えば。なぜ私はこのエラーが理解できないのですか? > auto $ cyl < - as.factor(auto $ cyl) '$ < - 。data.frame'( '* tmp *'、cyl、value = integer(0)): 置換は0行、データは6 – Nikita