When I add something to mydataframe it changes from num. to char. ...

General
1

image
image2224×684 182 KB

Why does it change to char. after my marked code?

firstname = c("Thomas","Max","Sebi","Jogi","Anna")
lastname = c("Haberl", "Mustermann", "Boehm", "Pfennig", "Mayer")
yearofbirth = c(2000,1995,2000,1999,1992)
agecategory = c("child", "elderly", "adult", "adult", "adolescent")
#3.2
thirdPerson = paste(firstname[3], lastname[3])
#3.3
mydataframe = data.frame(firstname, lastname,yearofbirth,agecategory,stringsAsFactors = FALSE)
#3.4
firstandlastname = paste(mydataframe$firstname,mydataframe$lastname)
#3.5
newMember = c("Franz","Huber",1950,"adult")
#3.6 
mydataframe = rbind.data.frame(mydataframe,newMember,stringsAsFactors = FALSE)
2

Hello! Welcome to the community.

First I have to admit that without dinner output, it's difficult to understand what is happening. The data looks was expected in the right hand side.

Could you try rbind()instead of rbind.data.frame()? I believe base rbind is less restrictive.

3

When I add something to mydataframe it changes from num. to char. ...

The something that you are adding is a character vector. A vector is always of a single type, in your case character, the fact you put 1950 as third element can not be relied upon, it gets immediately coerced to "1950"

4

Still won't work..

#3.1
firstname = c("Thomas","Max","Sebi","Jogi","Anna")
lastname = c("Haberl", "Mustermann", "Boehm", "Pfennig", "Mayer")
yearofbirth = c(2000,1995,2000,1999,1992)
agecategory = c("child", "elderly", "adult", "adult", "adolescent")
#3.2
thirdPerson = paste(firstname[3], lastname[3])
#3.3
mydataframe = data.frame(firstname, lastname,yearofbirth,agecategory,stringsAsFactors = FALSE)
#3.4
firstandlastname = paste(mydataframe$firstname,mydataframe$lastname)
#3.5
newMember = c("Franz","Huber",1950,"adult")
mydataframe = rbind(mydataframe,newMember,stringsAsFactors = FALSE)

5

(post withdrawn by author, will be automatically deleted in 24 hours unless flagged)

6

(post withdrawn by author, will be automatically deleted in 24 hours unless flagged)

7

Hi, welcome!

Please have a look to our homework policy, homework inspired questions are welcome but they should not include verbatim instructions from your course.

8

This topic was automatically closed 21 days after the last reply. New replies are no longer allowed.

If you have a query related to it or one of the replies, start a new topic and refer back with a link.