Introduction to Statistics Through Resampling Methods and R, 2nd Edition

Chapter 7

Guide to Entering, Editing, Saving, and Retrieving Large Quantities of Data Using R

7.1 CREATING AND EDITING A DATA FILE

Let’s begin by reentering the class data from Chapter 1:

 height = c(141, 156.5, 162, 159, 157, 143.5, 154, 
158, 140, 142, 150, 148.5, 138.5, 161, 153, 145, 
147, 158.5, 160.5, 167.5, 155, 137)
 armspan = c(141, 156.5, 162, 159, 158, 143.5, 
155.5, 160, 140, 142.5, 148, 148.5, 139, 160, 
152.5, 142, 146.5, 159.5, 160.5, 164, 157, 137.5)

and put them together into a data frame we can add new data to:

 tdata=data.frame(height,armspan)

Now let’s add some data

 classdata=edit(tdata)

When the edit window opens as shown in Figure 7.1, we click on the heading “var3” in column 3.

Figure 7.1 The R edit() window.

Next, we add entries to the column we’ve created as shown in Figure 7.2.

Figure 7.2 Using the R Data Editor to add new entries to our data frame.

7.2 STORING AND ...