similar to: Package boot, funtion cv.glm

Hi, I'm Pina and I'm a student in geology. I'm working with spectral profile of sand and I have to find the similarity between one spectral profile selected by hyperspectral image anche one that I created to mix different percentage of 4 mineral component. I have to find the best mix of percentage of this 4 mineral in order to have the best likeness with the spectral profile chose by

Hi all, I'm having a strange error that prevents me from installing new packages, or updating packages after reinstalling. The error message is Warning: unable to move temporary installation ‘C:\Program Files\R\R-2.14.2\library\file15045004ac2\sandwich’ to ‘C:\Program Files\R\R-2.14.2\library\sandwich’ for one of the packages that is failing to install/update. This error started happening

Hello, I used the glm function in R to fit a dose-response relationship and then have been using dose.p to calculate the LC50, however I would like to calculate the NOEL (no observed effect level), ie the lowest dose above which responses start occurring. Does anyone know how to do this? [[alternative HTML version deleted]]

Hi, I work with hyperspectral remote sensing data and I try to built a pls model with this data. I already built the model but if I try to calculate the RMSEP and R2 with a test data set I get the following error message: Error: variable 'subX' was fitted with type "nmatrix.501" but type "nmatrix.73" was supplied The problem is that I don't get the message for

I have a comma delimited text file in which many columns of numbers are also quoted and have commas as well as decimals. I was surprised to find read.csv() didn't import this seamlessly, even after messing around with the colClasses argument. I did find a solution to convert the character strings after reading them in, but wonder if there isn't a better one I overlooked. test =

Hi All In the past I have worked with parallel processing in R where a function F is applied to the elements of a list L. The more cpu cores one has, the faster the process will run. At the time of launching the process for (F,L) I will have a certain fixed number of cpu's that I can use. I have tested this approach and it works fine (i.e. package 'multicore' , using 'mapply'

Dear list, I am trying to reclaim what I think is lost memory in R, I have been using gc(), rm() and also using Rprof to figure out where all the memory is going but I might be missing something. I have the following situation basic loop which calls memoryHogFunction: for i in (1:N) { dataset <- generateDataset(i) fit <- try( memoryHogFunction(dataset, otherParameters)) } and

Hello: While running R doing the analysis of my data I (using packages such as BIOMOD or e1071) get the following error as a result of several of my analysis: Error: cannot allocate vector of size 998.5 Mb In addition: Warning messages: 1: In array(c(rep.int(c(1, numeric(n)), n - 1L), 1), d, dn) : Reached total allocation of 4095Mb: see help(memory.size) 2: In array(c(rep.int(c(1,

Hi, I have a query which I would like to translate into R, but I do not know how to do it in an easy way. Assume a data frame has columns A, B and C: A B C 1 1 3 1 1 4 1 1 5 1 2 6 1 2 7 1 3 8 The query is as follows: select A, B, count(*) from data.frame group by A, B order by count(*) desc How do I translate this into R statements in such way that the result is a data frame structured as

The Helmholtz Alliance of Earth System Dynamics aims at the development of innovative remote sensing products based on the newest satellite missions. The focus here is on quantifying dynamic processes within the bio-, hydro-, geo- and cryosphere to monitor and understand environmental change on a global scale. The Alliance will be the nucleus within an innovative network of more than 60

hsdar is back on CRAN We are very happy to announce that a new version of the hsdar-package (hyperspectral data analysis in R) is available on CRAN. The introductory vignette is available here: https://cran.r-project.org/web/packages/hsdar/vignettes/Hsdar-intro.pdf The main class "Speclib" has been changed in that the additional information is now stored in the SI slot (function

Hi, I'm Pina and I'm a student in geology. I'm working with spectral profile of sand and I have to find the similarity between one spectral profile selected by hyperspectral image anche one that I created to mix different percentage of 4 mineral component. I have to find the best mix of percentage of this 4 mineral in order to have the best likeness with the spectral profile chose by

Everyone, I'm very new to R, especially when it comes to loops and functions, so please bear with me if this is an elementary question. I cannot seem to figure out how to construct a loop which runs a function until a certain value is computed. For example, say I have the following: num = numeric (10) num [1] = 0 for (i in 2:10) { num [i] = num [i-1] + 5 } This adds 5 to the

On Thu, Feb 07, 2013 at 09:53:39PM +1100, Vadim Rozenfeld wrote: > On Thu, 2013-02-07 at 12:18 +0200, Michael S. Tsirkin wrote: > > On Thu, Feb 07, 2013 at 08:24:10PM +1100, Vadim Rozenfeld wrote: > > > On Thu, 2013-02-07 at 11:33 +1030, Rusty Russell wrote: > > > > Vadim Rozenfeld <vrozenfe at redhat.com> writes: > > > > > On Tue, 2013-02-05 at

On Thu, Feb 07, 2013 at 09:53:39PM +1100, Vadim Rozenfeld wrote: > On Thu, 2013-02-07 at 12:18 +0200, Michael S. Tsirkin wrote: > > On Thu, Feb 07, 2013 at 08:24:10PM +1100, Vadim Rozenfeld wrote: > > > On Thu, 2013-02-07 at 11:33 +1030, Rusty Russell wrote: > > > > Vadim Rozenfeld <vrozenfe at redhat.com> writes: > > > > > On Tue, 2013-02-05 at

I got a new USB ethernet adapter from ebay, the ad said RealTek chipset, so I thought I would chance it. Well, my 5.2 system does not recognize the USB device. At all. What do I need to do? I checked the driver CD and the XP driver directory's .inf file has the following: ; ASIX AX88172 USB2 to Fast Ethernet Adapter * ; * ; Copyright 2001-2003,

Sorry, spoke too quickly! The problem was caused by my editing the MkRules file with an editor that replaces tabs with spaces. Make evidently requires that all lines start with a tab (see http://www.delorie.com/djgpp/v2faq/faq22_17.html). Perhaps worth warning windoze users like myself of such perils in readme.packages or somewhere similar! Now I have a new problem, but it looks fixable.

Hi, I would like to display results on the screen . Can I use the printf function in LLVM? How do I call the funtion? Could someone give me an example Thanks Jai

Have any way to write a funtion into a list ? -- Nash - morrison at ibms.sinica.edu.tw

Hi, I have a variable X classified in a lot of groups and I need to run the [fitdistr] funtion for each group. I tried with the [by] or the [tapply] funtions because my data is organize in two columns (variable and the groups), but neither of these command work. If somebody have a tip to help me up I really appreciate it. thanks, [[alternative HTML version deleted]]