[R] Fast Removing Duplicates from Every Column

[Bert Jacobs]

Hi,

I'm looking for some lines of code that does the following:
I have a dataframe with 160 Columns and a number of rows (max 30):

		Col1 Col2 Col3 ... Col 159 Col 160 
Row 1 	0 	0 	LD ... 0	   VD 
Row 2 	HD 	0 	0 	 0 	   MD 
Row 3 	0 	HD 	HD 	 0       LD 
Row 4 	LD 	HD 	HD 	 0 	   LD 
...		...
LastRow	HD    HD    LD     0       MD


Now I want a dataframe that looks like this. As you see all duplicates are
removed. Can this dataframe be constructed in a fast way?

		Col1 Col2 Col3 ... Col 159 Col 160 
Row 1       0    0    LD       0	    VD
Row 2     	HD   HD   0        0        MD
Row 3     	LD   0    HD       0        LD

Thx for helping me out.
Bert