[R] Zero is not zero

Hello, There: I read data from tab-delimted text file(1888.txt) in C:/temp, which has thousands rows and 80 colulms, using read.delim(C:/temp/1888.txt). when I retrieved the numeric coulum which has real zero values and applies R buid-in function such as mean( ), sum() and got a result of NA

Re: [R] Zero is not zero

On Wed, 28 May 2003 10:48:08 -0400, you wrote: Hello, There: I read data from tab-delimted text file(1888.txt) in C:/temp, which has thousands rows and 80 colulms, using read.delim(C:/temp/1888.txt). when I retrieved the numeric coulum which has real zero values and applies R buid-in function