# All info goes in - Name, Age, Height, and Weight # Age, Height, and Weight are integers, therefore no quotes. names <- c("joe","jack","jim","james") age <- c(23,25,27,23) height <- c(170,173,168,172) weight <- c(65,73,71,70) # Place all info into a data frame called dfD dfD <- data.frame(names,age,height,weight) # Returns names age height weight 1 joe 23 170 65 2 jack 25 173 73 3 jim 27 168 71 4 james 23 172 70 # Let's get all of Jim's data dfD[(dfD[1]=="jim"),] # Returns names age height weight 3 jim 27 168 71 # Now, a set of people peeps <- c("joe","james") subset(dfD, names %in% peeps) # Returns names age height weight 1 joe 23 170 65 4 james 23 172 70 # Finally, people shorter than 173 cm subset(dfD, height < 173) # Returns names age height weight 1 joe 23 170 65 3 jim 27 168 71 4 james 23 172 70
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