[R] Using %variable% object-column names in function

[achilleas.psomas@wsl.ch]

Dear R-help..

I am rather new in R so i would appreciate your help in my problem..
I cant seem to be able to write a function that has arguments being  objects and
column names of these ojbects...
A simple example code that doesnt work is the following..


auto_plot <- function (object1,column1,object2,column2) {


plot(object1$column1,object2$column2)

}


I get the message:
Error in xy.coords(x, y, xlabel, ylabel, log) :
        x and y lengths differ

Maybe the solution is simple but i just couldnt find it..


Thanks a lot for your help..

Achilleas.