Your task is to study the dataset and the associated description of the data (i.e. “data dictionary”). You may need to look around a bit, but it’s there! You should take the data, and create a data frame with a subset of the columns in the dataset. You should include the column that indicates edible or poisonous and three or four other columns. You should also add meaningful column names and replace the abbreviations used in the data—for example, in the appropriate column, “e” might become “edible.” Your deliverable is the R code to perform these transformation tasks.
Loading data from the following location into a data frame: https://archive.ics.uci.edu/ml/datasets/Mushroom
MushroomData <- read.csv(file="https://archive.ics.uci.edu/ml/machine-learning-databases/mushroom/agaricus-lepiota.data", header=FALSE, sep=",")
head(MushroomData)## V1 V2 V3 V4 V5 V6 V7 V8 V9 V10 V11 V12 V13 V14 V15 V16 V17 V18 V19 V20
## 1 p x s n t p f c n k e e s s w w p w o p
## 2 e x s y t a f c b k e c s s w w p w o p
## 3 e b s w t l f c b n e c s s w w p w o p
## 4 p x y w t p f c n n e e s s w w p w o p
## 5 e x s g f n f w b k t e s s w w p w o e
## 6 e x y y t a f c b n e c s s w w p w o p
## V21 V22 V23
## 1 k s u
## 2 n n g
## 3 n n m
## 4 k s u
## 5 n a g
## 6 k n gCreating a subset of the mushroom data with only 5 columns: Class, Cap Shape, Cap Color, Odor, and Population.
SMushroomData <- data.frame(MushroomData$V1, MushroomData$V2, MushroomData$V5, MushroomData$V6, MushroomData$V22)
head(SMushroomData)## MushroomData.V1 MushroomData.V2 MushroomData.V5 MushroomData.V6
## 1 p x t p
## 2 e x t a
## 3 e b t l
## 4 p x t p
## 5 e x f n
## 6 e x t a
## MushroomData.V22
## 1 s
## 2 n
## 3 n
## 4 s
## 5 a
## 6 nAdding column names according to the data dictionary
colnames(SMushroomData) <- c("Class","CapShape", "Bruises", "Odor", "Population")
head(SMushroomData)## Class CapShape Bruises Odor Population
## 1 p x t p s
## 2 e x t a n
## 3 e b t l n
## 4 p x t p s
## 5 e x f n a
## 6 e x t a nReplacing abbreviations with actual values
SMushroomData$Class = as.character(SMushroomData$Class);
SMushroomData$Class[SMushroomData$Class == "e"] = "edible";
SMushroomData$Class[SMushroomData$Class == "p"] = "poisonous";
head(SMushroomData)## Class CapShape Bruises Odor Population
## 1 poisonous x t p s
## 2 edible x t a n
## 3 edible b t l n
## 4 poisonous x t p s
## 5 edible x f n a
## 6 edible x t a nSMushroomData$CapShape = as.character(SMushroomData$CapShape);
SMushroomData$CapShape[SMushroomData$CapShape == "b"] = "bell";
SMushroomData$CapShape[SMushroomData$CapShape == "c"] = "conical";
SMushroomData$CapShape[SMushroomData$CapShape == "x"] = "convex";
SMushroomData$CapShape[SMushroomData$CapShape == "f"] = "flat";
SMushroomData$CapShape[SMushroomData$CapShape == "k"] = "knobbed";
SMushroomData$CapShape[SMushroomData$CapShape == "s"] = "sunken";
head(SMushroomData)## Class CapShape Bruises Odor Population
## 1 poisonous convex t p s
## 2 edible convex t a n
## 3 edible bell t l n
## 4 poisonous convex t p s
## 5 edible convex f n a
## 6 edible convex t a nSMushroomData$Bruises = as.character(SMushroomData$Bruises);
SMushroomData$Bruises[SMushroomData$Bruises == "t"] = "yes";
SMushroomData$Bruises[SMushroomData$Bruises == "f"] = "no";
head(SMushroomData)## Class CapShape Bruises Odor Population
## 1 poisonous convex yes p s
## 2 edible convex yes a n
## 3 edible bell yes l n
## 4 poisonous convex yes p s
## 5 edible convex no n a
## 6 edible convex yes a nSMushroomData$Odor = as.character(SMushroomData$Odor);
SMushroomData$Odor[SMushroomData$Odor == "a"] = "almond";
SMushroomData$Odor[SMushroomData$Odor == "l"] = "anise";
SMushroomData$Odor[SMushroomData$Odor == "c"] = "creosote";
SMushroomData$Odor[SMushroomData$Odor == "y"] = "fishy";
SMushroomData$Odor[SMushroomData$Odor == "f"] = "foul";
SMushroomData$Odor[SMushroomData$Odor == "m"] = "musty";
SMushroomData$Odor[SMushroomData$Odor == "n"] = "none";
SMushroomData$Odor[SMushroomData$Odor == "p"] = "pungent";
SMushroomData$Odor[SMushroomData$Odor == "s"] = "spicy";
head(SMushroomData)## Class CapShape Bruises Odor Population
## 1 poisonous convex yes pungent s
## 2 edible convex yes almond n
## 3 edible bell yes anise n
## 4 poisonous convex yes pungent s
## 5 edible convex no none a
## 6 edible convex yes almond nSMushroomData$Population = as.character(SMushroomData$Population);
SMushroomData$Population[SMushroomData$Population == "a"] = "abundant";
SMushroomData$Population[SMushroomData$Population == "c"] = "clustered";
SMushroomData$Population[SMushroomData$Population == "n"] = "numerous";
SMushroomData$Population[SMushroomData$Population == "s"] = "scattered";
SMushroomData$Population[SMushroomData$Population == "v"] = "several";
SMushroomData$Population[SMushroomData$Population == "y"] = "solitary";
head(SMushroomData)## Class CapShape Bruises Odor Population
## 1 poisonous convex yes pungent scattered
## 2 edible convex yes almond numerous
## 3 edible bell yes anise numerous
## 4 poisonous convex yes pungent scattered
## 5 edible convex no none abundant
## 6 edible convex yes almond numerous