
Dear Sir/Madam,
 
I have a data.frame file
 
x y z
1 1 1
2 2 3
 
I want to convert x to matrix's row header, y to matrix's column header, and z as the intersect cells of x and y.
 
Are there any R module can be used to do this?
 
Best regards,
 
Catherine 		 	   		  
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