similar to: Extracting a row number from a matrix

Hello All, I have a device that spews out experimental data as a series of text files each of which contains one column with several rows of numeric data. My problem is that for each trial it gives me one text file (and I run between 30 to 50 trials at a time) and I would ideally like to merge all these text files into one large data frame with each column representing a single trial. It is not

Hi all, I have a x, y matrix of numbers (usually ranging from 0 to 40). I need to group these numbers and assign a color to each group (for example 0 to 15 - Blue, 16-30- Yellow, and 31-40- Red). Then I need to draw a rectangular matrix which contains X x Y boxes and each box has the corresponding value from the input matrix and is also colored according to which group (i.e red, yellow,

Hi, I have two data frames each with 5 columns and different number of rows. some of the row names in one data frame are the same as the row names in the other. I want to be able to merge the two data frames to get a new data frame in which the duplicated row names are only shown once with the data for the rest of the columns used from the first data frame. Essentially, I want to make a union

Hi all, In response to a previous post about plotting a numeric square matrix as a colored matrix, I was referred to both image and the color2D.matplot function in the plotrix package. Both have worked for me thanks!! However I need to plot my data in a log transformed color scale. Is this possible? I will be happy to explain further, but basically I need to do this because there are large

Hi all, I created three separate square matrices (lets say R, G, and B). each one contains a series of values between 0 and 1. I want to be able to take for example R[1], G[1], B[1] and create a rgb color value into a fourth matrix. I tried using the rgb function but I must be doing something wrong because it fails with the following error message. (list) object cannot be coerced to

Dear R help, I have a dataset with 1's and 0's.? Here, each row is the observation for an insect.? If the animal is present in light area at a particular time, response is 1 and if it is present in dark area, the response is 0.? I would like to do some formating on the data for analysis.? To be specific, I need the rows where the animal starts in the light (1), went to dark (0), and came

Does anybody know a way to determine the longest run of a number in a vector of numbers? For example if I have the following numbers: 0 0 1 1 1 1 0 1 1 0 0 0 1 1; how can I determine that the longest run of 1's = 4 and longest run of 0's = 3? Thanks, Mark

I've come up with the following kickstart config (see below) for deploying a minimal CentOS 6 VM. It takes about 460MB. I'm assuming that all of the -firmware RPMs aren't needed for a VM installation, so I removed them. Also removed as many selinux packages as possible since I don't need that. I was wondering whether anyone could offer any further suggestions on minimizing

Hello, I'm a grad student in the Intelligent Transportation Systems lab at Portland State Univ. in Portland, OR, USA. I'm trying to learn the basics of R to run a negative binomial in the near future, and so I ran a test regression on roadway crash data obtained from "Statistical and Econometric Methods for Transportation Data Analysis" by Washington et al (p. 250). I ran the

Hey everyone The question that i am putting up will sound a bit odd as i am a newbie to asterisk. I have downloaded and install the asterisk and had a look at some of the configuration files like sip.conf, users.conf and extensions.conf. Now my question is that I want to do voip with another pc in LAN, what shall i have to do to implement this and i guess it will be possible without any hardware

Dear List Members, I need some help about programming in S language. My problem is as follows: I have meteorological data (about rainfall measurement each day from 1989-2002), say like http://www.angelfire.com/ab5/get5/data.rainfall.txt or http://www.angelfire.com/ab5/get5/R.rainfall.txt in a sequence of 0(denoting dry day)'s and 1(denoting wet day)'s. I want to construct a frequency

Hello, I have a large data frame (1006222 rows), which I subject to a crude clustering attempt that results in a vector stating whether the datapoint represented by a row belongs to a cluster or not. Conceptually this looks something like this: Value Cluster? 0.01 FALSE 0.03 TRUE 0.04 TRUE 0.05 TRUE 0.07 FALSE ... What I'm looking for is an efficient strategy to extract all

Hello, Being new to R, I am completely stuck with the following problem. Please help to find a general solution to the following matrix task: Given: N<-4 input_mat<-matrix(c(1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0),ncol=N)

I would like to know if there is a proper documentation for compiling libvirt for Windows. This is in regard to the latest versions of libvirt. Also, most answers are outdated and the scripts by Matthias Bolte on github don't use the latest versions and patches for libvirt. Regards, Kartik Vaishnav

Hi, I would like to extract the last row of each group in a data frame. The data frame is as follows Name Value A 1 A 2 A 3 B 4 B 8 C 2 D 3 I would like to get a data frame as Name Value A 3 B 8 C 2 D 3 Thank you for your suggestions in advance Jeff

I have a time series data with 1's and 0's. When the last 3 observations are 1 I want to generate a 1 until I have three 0's in a row and then I want it to produce all zeros again. For example if I have 0101010101 for the first part of the time series this would produce all zeros. Then if the data has 111 my function will return 1's until I have three 0's in a row and it

Hola lista, tengo una base de datos muy grande de un datalogger. Consiste en un vector con 0's y 1's, y tengo que ver cuando hay 600 o más unos seguidos. Se me ocurrió hacerlo con un loop for. Pero tarda demasiado. También intente usar which para que seleccione solo los 1 para empezar a sumar pero no hay gran diferencia. A alguien se le ocurre alguna solución para hacerlo más rápido? Acá

Having worked on SSA register allocators in the past I have to say that SSA is actually a good fit for register allocation. However LLVM IR is indeed not. You don't have any target instructions or register classed/constraints. It wouldn't make much sense to designate registers to llvm IR values nor is there a way to express that in IR. llvm has the machine instruction (MI) representation

Hi, what is the proper of of "passing a missing value" so I can extract the entire i-th row of a matrix (in a list of lists) without pre-computing the number of cols? For example, if I know that the matrices have 2 columns, I can do the following: set.seed(1) x0 <- lapply(1:10, function(i) replicate(4, list(matrix(rnorm(10), nc=2)))) lapply(lapply(x0, '[[', 3), '[',

I intend to draw a plot of y against x. In the background of this graph I wish to creat a histogram of the horizontal variable x. Does any expert know how to produce such a plot? [[alternative HTML version deleted]]