How to check if object is defines in R?

0 votes
I'm trying to figure out the variables that are defines and the variables that aren't defined. How do I do it?
Nov 6, 2018 in Data Analytics by Hannah
• 14,070 points
28 views

1 answer to this question.

0 votes

You can use the exists function for this purpose.

R> exists("somethingUnknown")
[1] FALSE
R> somethingUnknown <- 42
R> exists("somethingUnknown")
[1] TRUE
R> 
answered Nov 6, 2018 by Kalgi
• 40,480 points

Related Questions In Data Analytics

0 votes
1 answer

Check if the object(variable) is defined in R

You can use the exists(): > exists("toFindUnknown") [1] FALSE > ...READ MORE

answered Apr 17, 2018 in Data Analytics by darklord
• 6,140 points
49 views
0 votes
1 answer

Is there any way to check for missing packages and install them in R?

There are 2 options: Either you can use ...READ MORE

answered Apr 17, 2018 in Data Analytics by nirvana
• 3,060 points
43 views
0 votes
1 answer

How to find out the package version which is loaded in R?

You can use sessionInfo() to accomplish that. > ...READ MORE

answered Apr 18, 2018 in Data Analytics by zombie
• 3,690 points
27 views
0 votes
1 answer

Which package is used to do data import in R and Python and How do you import SAS data?

We can do data import using multiple ...READ MORE

answered Aug 24, 2018 in Data Analytics by Anmol
• 3,620 points
32 views
0 votes
2 answers

How to sort a data frame by columns in R?

You can use dplyr function arrange() like ...READ MORE

answered Aug 21 in Data Analytics by anonymous
• 26,020 points
121 views
0 votes
1 answer

How can I perform word stemming in R

The tm package in R provides the stemDocument() function to stem the ...READ MORE

answered Aug 20, 2018 in Data Analytics by Anmol
• 3,620 points
55 views
0 votes
1 answer

How to know the type of an object?

To find the type of an object ...READ MORE

answered Sep 19, 2018 in Data Analytics by Anmol
• 3,620 points
33 views
0 votes
1 answer

Remove NA values from the output in R programming

Edit your code: columnmean <- function(x, removeNA = ...READ MORE

answered Oct 31, 2018 in Data Analytics by Kalgi
• 40,480 points
40 views
0 votes
1 answer

"Error in if" while trying to execute simple code in R

This caused non-logical data or missing values passed ...READ MORE

answered Oct 31, 2018 in Data Analytics by Kalgi
• 40,480 points
36 views
0 votes
1 answer

how to run a logistic regression with clustered standard errors in R?

have a look at rms package. lrm is logistic ...READ MORE

answered Nov 6, 2018 in Data Analytics by Kalgi
• 40,480 points
144 views