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Hi R, par(mfrow=c(2,2)) x1=(1:5)^1; x2=(1:5)^2; x3=(1:5)^3; x4=(1:5)^4 I need to write a single plot statement, which creates 4 plots (for x1, x2, x3 and x4) in the graphics window, without using 'for' loop. Is this possible? Does 'do.call' help in this context? Or do I have any option in the 'plot' statement itself to do this? Thanks in advance, Shubha This

Hi, Suppose a=matrix(1:9,3,3) > a [,1] [,2] [,3] [1,] 1 4 7 [2,] 2 5 8 [3,] 3 6 9 Now, > class(a[1:2,]) [1] "matrix" > class(a[1:3,]) [1] "matrix" > class(a[,1:2]) [1] "matrix" > class(a[,1:3]) [1] "matrix" But, > class(a[1,]) [1] "integer" > class(a[,1]) [1]

Hi R users, I have a dataframe in the below format xyz 01/03/2007 15.25 USD xyz 01/04/2007 15.32 USD xyz 01/02/2008 23.22 USD abc 01/03/2007 45.2 EUR abc 01/04/2007 45.00 EUR

Hi R, I have an excel file in which the third column is "date" and others are "character" and "numeric". Number of columns are 12 If I use this to read the file in R: x = read.xls("D:\\file.xls") The problem is that my date column is read in julian dates. So I am using: x = read.xls("D:\\file.xls",

...------------------------------ Message: 34 Date: Mon, 20 Aug 2007 12:43:49 +0530 From: "Shubha Vishwanath Karanth" <shubhak at ambaresearch.com> Subject: [R] Differentiation To: <r-help at stat.math.ethz.ch> Message-ID: <A36876D3F8A5734FA84A4338135E7CC30252EE01 at BAN-MAILSRV03.Amba.com> Content-Type: text/plain Hi, Could anyone tell me what is the command used in R to do 1. Differentiation 2. Newton Raphson method (Numerical Analysis in general...) Are there any packages separately for this? [[replacing trailing spam]] BR, Shubha [[alternative HT...