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...ed to mutliply each element of column table of a row and sum it up. iii)I would also like to know how to insert an if else statement where in the above case, I wanted to check if data[1:3,] returns me 1 or 0, it will execute some calculations. I refer to the R intro pdf and it mentioned using if (expr_1 ) expr_2 else expr_3. Does that mean if(data[1:3,1:2])>0 output[1:3,1:2]=0 else output[1:3,1:2]="100". If I did this command, how does R knows which row and column to map the output with? Please advise. Appreciate alot. Thanks. [[alternative HTML version deleted]]

User has to type (input) x. After input....code has to check X with statement if There is a statement IF. If X=0 then Y=5/2 else =7; How to code it please. I tried but my code does not work ;( I wanna see how it looks like( thank u in advance( -- View this message in context: http://r.789695.n4.nabble.com/Help-me-please-to-code-tp4646932.html Sent from the R help mailing list archive at

...d, and it may be used -wherever any expression may be used; in particular multiple assignments -are possible. +wherever any expression may be used; in particular, multiple assignments +such as @code{x <- y <- z <- 0} are possible. Commands may be grouped together in braces, @code{@{@var{expr_1}; @var{@dots{}}; @var{expr_m}@}}, in which case the value of the group --- R-intro.texi~ Tue Aug 24 11:21:38 2004 +++ R-intro.texi Tue Aug 24 11:21:38 2004 @@ -2021,9 +2021,8 @@ @example > solve(A,b) @end example - @noindent -solves the system, returning @code{x} (up to some accuracy loss)....