character comp
Hi Erin, Yes, it is always A's.
On Sat, Feb 9, 2019 at 12:22 PM Erin Hodgess <erinm.hodgess at gmail.com> wrote:
Will it always be A?s or will there be a mix please? On Sat, Feb 9, 2019 at 11:06 AM Val <valkremk at gmail.com> wrote:
Hi All, In a given data frame I want to compare character values of two columns. My sample data looks like as follow, mydataframe <- read.table( text='ID var1 var2 R1 AA AAA R2 AAA AAA R3 A AAAA R4 AA A R5 A AAA', header = TRUE, as.is = TRUE ) For each ID, I want create the third column "dvar" as difference between var1 and var2 Row1( R1) the "dvar" value will be -1 and the complete desired out put looks like as follow. ID var1 var2 dvar R1 AA AAA -1 R2 AAA AAA 0 R3 A AAAA -3 R4 AA A 1 R5 A AAA -2 How do i do this? Any help please? Thank you
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