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Finding a Diff within a Dataframe columns

Ramya 
Hi jholtman,

Thanks a ton it just worked. if you dont mind can you explain the code it a
little 
sapply(seq(from = 1, by = 2, length = ncol(x) %/% 2), function(a){
+     x[[a]] - x[[a + 1]]
+ }) 

wat is the purpose of double percent sign and is the sapply the function we
generally use for the Dataframe?

Thanks
Ramya

Thread (9 messages)

Ramya Finding a Diff within a Dataframe columns Jan 30 Santosh Srinivas Finding a Diff within a Dataframe columns Jan 30 jim holtman Finding a Diff within a Dataframe columns Jan 30 Ramya Finding a Diff within a Dataframe columns Jan 30 Dennis Murphy Finding a Diff within a Dataframe columns Jan 31 Henrique Dallazuanna Finding a Diff within a Dataframe columns Jan 31 Dennis Murphy Finding a Diff within a Dataframe columns Jan 31 Ramya Finding a Diff within a Dataframe columns Jan 31 jim holtman Finding a Diff within a Dataframe columns Jan 31