R Markdown

This is an R Markdown document. Markdown is a simple formatting syntax for authoring HTML, PDF, and MS Word documents. For more details on using R Markdown see http://rmarkdown.rstudio.com.

When you click the Knit button a document will be generated that includes both content as well as the output of any embedded R code chunks within the document. You can embed an R code chunk like this:

subject_name <-c("John Doe","Jane Doe","Steve Graves")
temperature <-c(98.1,98.6,101.4)
flu_status <-c(FALSE,FALSE,TRUE)
temperature[2]
## [1] 98.6
temperature[2:3]
## [1]  98.6 101.4
temperature[-2]
## [1]  98.1 101.4
gender <- factor(c("MALE","FEMALE","MALE"))
gender
## [1] MALE   FEMALE MALE  
## Levels: FEMALE MALE
blood <-factor(c("O","AB","A"), levels = c("A","B","AB","O"))
symptoms <- factor(c("SEVERE", "MILD", "MODERATE"), levels = c("MILD", "MODERATE","SEVERE"),ordered=TRUE)
symptoms
## [1] SEVERE   MILD     MODERATE
## Levels: MILD < MODERATE < SEVERE
blood <-factor(c("O-","AB-","A-"), levels = c("A-","B-","AB-","O-"))
symptoms >="MODERATE"
## [1]  TRUE FALSE  TRUE
pt_data<-data.frame(subject_name,temperature,flu_status,gender,blood,symptoms.stringsAsFactors=FALSE)
pt_data
##   subject_name temperature flu_status gender blood symptoms.stringsAsFactors
## 1     John Doe        98.1      FALSE   MALE    O-                     FALSE
## 2     Jane Doe        98.6      FALSE FEMALE   AB-                     FALSE
## 3 Steve Graves       101.4       TRUE   MALE    A-                     FALSE
pt_data$subject_name
## [1] "John Doe"     "Jane Doe"     "Steve Graves"
pt_data[1,2]
## [1] 98.1
pt_data[,1]
## [1] "John Doe"     "Jane Doe"     "Steve Graves"
pt_data[c(1,3),c(2,4)]
##   temperature gender
## 1        98.1   MALE
## 3       101.4   MALE
pt_data[c(1,3),c("temperature","gender")]
##   temperature gender
## 1        98.1   MALE
## 3       101.4   MALE
pt_data$temp_c <- (pt_data$temperature-32)*(5/9)
pt_data[c("temperature","temp_c")]
##   temperature   temp_c
## 1        98.1 36.72222
## 2        98.6 37.00000
## 3       101.4 38.55556

Including Plots

You can also embed plots, for example:

Note that the echo = FALSE parameter was added to the code chunk to prevent printing of the R code that generated the plot.