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...ate.or.us/outgoing/Test/. It should be there for a few days before it gets deleted. Benjamin Stabler Transportation Planning Analysis Unit Oregon Department of Transportation 555 13th Street NE, Suite 2 Salem, OR 97301 Ph: 503-986-4104 -----Original Message----- From: Peter Wilkinson [mailto:pwilkinson at videotron.ca] Sent: Thursday, August 05, 2004 1:00 PM To: Hector Villafuerte; tutor at python.org; r-help at stat.math.ethz.ch Subject: Re: [R] R interface to Python (in Windows) Hi there, This is because rpy that is currently available was compiled for R1.8.1, and they have not released a...

I am trying to write an efficient function that will do the following: Given an nxm matrix, 10 rows (observations) by 10 columns (samples) for each row, test of all values in the row are greater than a value k If all values are greater than k, then set all values to NA (or something), Return an nxm matrix with the modified rows. If I do this with a matrix of 20,000 rows, I will be waiting until

here is a snippet of data where I would like to drop all rows that have zeros across them, and keep the rest of the rows while maintaining the row names (1,2,3, ...10). The idea here is that a row of zeros is an indication that the row must be dropped. There will never be the case where there is a row(of n columns) with less than 5 zeros in this case(n zeros I am unsure how to manipulate the

...> I like to bring the list created in Splus into R. What is the | > shortest way to do this? | > Much thanks, Vicky. | > [[alternative HTML version deleted]] | > | | | | ------------------------------ | | Message: 21 | Date: Sun, 11 Jul 2004 16:51:59 -0400 | From: Peter Wilkinson <pwilkinson at videotron.ca> | Subject: Re: [R] How to bring an Splus object into R | To: Victoria Landsman <msvika at mscc.huji.ac.il>, | r-help at stat.math.ethz.ch | Message-ID: <6.1.1.1.2.20040711165025.01bd87a0 at pop.videotron.ca> | Content-Type: text/plain; charset=us-ascii; format=flowed...

When using the write.table (say for a tab delimited file) command on a matrix with Row and Columns, the column headers are always being left shifted into the column where the row numbers are being placed. One can see this when you open up the tab delimited file in excel. Is there a better command for this, or is this supposed to be a 'feature'. Peter

Thanks for the suggestions, one option i was thinking was to center the universal channel and sample channels by normalising the medians of each column of the matrix on each channel. But I don't know if it is appropriate to do a loess after this? Does the quantile option actually do this? Peter At 06:59 PM 7/28/2004, you wrote: >At 06:02 AM 29/07/2004, Peter Wilkinson wrote:

I am running R 1.8.1 on windows xp. I have been using the 'apply' R function to run a short function against a matrix of 19000 x 340 rows ... yes it is a big matrix. every item in the matrix is a float that can have a maximum value of 2^16 ~ 65k. The function: mask256 <- function(value) { if (value < 256) { result = 0 } else { result = 1 }