r - Why does combining two `data.frame` objects using the `data.frame` function cut off a long variable name? -

I have noticed that if I combine two different data.frame objects in a larger I try the data.frame function by using data.fr , the variable name is cut (i.e. the output of names (db) See the code below.

I currently avoid the situation by combining variables using the data.table function instead.

My question is this Is:

Does the data.frame command can cut my variable names? This can be a simple question, and as.data.frame on data.table to convert the object back to data.frame , but I am very curious why variable names are cut in the first place if I only use it Data.frame function. I have tried to find an insight on this with the help of R and Google, but No success was found till I got R, and data.table and data.frame work (as I am a relatively new R user, More answers to help me understand better.

Thanks in advance!

  & gt; A & lt; - data.frame (rnorm (100)) & gt; B & L; - data.frame (rnorm (100)) & gt; Name (A) & lt; - "This Israri Haralevvalbal Naam-Arth ()" & gt; Name (B) & lt; - "Escondary Harlavnavelbellnam-STD ()" & gt; DB & lt; - Data. Frame (A, B)> Name (DB) [1] "Iscierllegveerabnem.emann .." "Iscenterary Harlowarabalibanam.stead .." & gt; Name (C (A, B)) [1] "Iscierllegveerbellname-meaning ()" "Iscenterary Harlangvarabelabalname-STD ()" & gt; Db2 & lt; - Data Eligible (A, B) & gt; Name (DB2) [1] "EsciervilValvalelName-Earth ()" "Isisanari harariavalbelabnem-STD ()"  

Variable names are not cut-off; Simply, they are making more "compatible" with the R environment. You can call it check.names = FALSE to data. Frame () :

 < Can override with code>  a