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Hi All. I am quite a newbie to R. This is a basic question. I like to modify elements of a vector. For Example: a1 <- c(1,2,3,4,3,5) TThe following program sentence does not work but the intention is; if (a1==3) a1*3 . 3 in the vector should be changed to 9, and the resulted vector is (1,2,9,4,9,5). How can I get the result? Thanks in advance for help. -------========-------- mitsu5

Hi All. I am quite a newbie to R. This is a next basic question. I have a matrix; > x <- matrix(1:10.,5) > x [,1] [,2] [1,] 1 6 [2,] 2 7 [3,] 3 8 [4,] 4 9 [5,] 5 10 I like to get a modified matrix as follows; [,1] [,2] [1,] 1 6 [2,] 2 7 [3,] 3 8 * 5 -> 40 [4,] 4 9 [5,] 5 10 The following expression does not work.

...age: NaNs produced in: sqrt(diag(object$cov)) It seems to me that there is something wrong at the conversion of "E1 TO E5=*;" to " 'V1 <-> V2','cv1', NA ". Could anyone explain me how to manage this trouble? Thanks. --------========---------- Mitsuo Igarashi mitsu5 at ruby.famille.ne.jp

https://bugs.freedesktop.org/show_bug.cgi?id=89912 Bug ID: 89912 Summary: Sometimes Nouveau hangs kernel with PGRAPH engine fault Product: xorg Version: unspecified Hardware: x86-64 (AMD64) OS: Linux (All) Status: NEW Severity: normal Priority: medium Component:

Hi. I am wondering whether Package SEM can do with intercepts and means in its structural analysis. If it can not calculate, how can I make a supplemental function in R? Many thanks in advance. --------========---------- Mitsuo Igarashi mitsu5 at ruby.famille.ne.jp

I truly thank for evrybody to give me many very good answers and suggestions. I like to summarize the replies with their results when excuted on R and with my comments. My question is > x <- matrix(1:10.,5) > x [,1] [,2] [1,] 1 6 [2,] 2 7 [3,] 3 8 [4,] 4 9 [5,] 5 10 there is a matrix. On condition x[? ,1]=3, how to modify the appropriate location to be