similar to: exponential with decreasing

Hi everybody, I try to do an exponential model with decreasing. In my data, there is no data missing but there negative values. I adapted this following code whose the origin code comes from in this forum: Regress<-read.table("C:\\Users\\Regression.csv",sep=";",dec=",",header=TRUE) Regress f <- function(x,a,b) {a * exp(b * x)} x<-Regress$EWT

Hi, I'm trying to make a regression of the form : formula <- y ~ Asym_inf + Asym_sup * ( (1 / (1 + (n1 * (exp( (tmid1-x) / scal1) )^(1/n1) ) ) ) - (1 / (1 + (n2 * (exp( (tmid2-x) / scal2) )^(1/n2) ) ) ) ) which is a sum of the generalized logistic model proposed by richards. with data such as these: x <- c(88,113,128,143,157,172,184,198,210,226,240,249,263,284,302,340) y <-

HI, Sorry Carl, I received your message in my spam folder. Sarah proposed me a good example of code. Thank you Momadou  ________________________________ De : Carl Witthoft [via R] <ml-node+s789695n4188375h96@n4.nabble.com> Envoyé le : Mardi 13 Décembre 2011 3h34 Objet : Re: Polygon Please read the posting guide and provide a (small) reproducible example of your data. The statement

Dear list, I'd like to use multiple imputations to try and save a somewhat badly mangled dataset (lousy data collection, worse than lousy monitoring, you know that drill... especially when I am consulted for the first time about one year *after* data collection). My dataset has 231 observations of 53 variables, of which only a very few has no missing data. Most variables have 5-10% of

Hi, I try to build a loop difficultly. I have in a folder called Matrices several files (.csv) called Mat2002273, Mat2002274 to Mat2002361. I want to calculate for each file the mean of the column called Pixelvalues. I try this code but as result, I have this message: Mat2002273 not found

Hi everybody, I have a matrix with 3 columns (Date, MeanArea and SdArea). I want to draw a figure showing the variable MeanArea in terms of the Date. But instead to use the variable SdArea as bar error, I want to use ?polygon error?. I use this code but the output does not seem good.

HI, This code is part of a code I used to do a linear regression: >points(var1~var2,data=Regress,pch=21,bg="grey") >reg11<-lm(var1~var2,data=Regress) >abline(lm(var1~var2,data=Regress),lty=2,lwd=2,col="grey") >legend("topleft",legend= >c("NDII from composite", >"y= 0.0007x - 0.1156",expression(paste(r^2 ==

Hi all R users I did a logistic regression with my binary variable Y (0/1) and 2 explanatory variables. Now I try to draw my nomogram with predictive value. I visited the help of R but I have problem to understand well the example. When I use glm fonction, I have a problem, thus I use lrm. My code is: modele<-lrm(Y~L+P,data=donnee) fun<- function(x) plogis(x-modele$coef[1]+modele$coef[2])

Hello, I am new at using R. I would like to use the following functions of the "clim.pact" package: ncdfcont and retrieve.nc I have installed the package "clim.pact" in Rstudio. I have downloaded the "ncdf pack" from unicar (including ncdump and ncgen). The ncdf file I'm working on is called "essai2.nc" Here is what I get, when I type the command

Hi, I did a linear regression with 5 explanatory variables. Now, to see the contribution of each variable, I use varpart from vegan library. But varpart don?t accepts my 5 explanatory variables, it accept only 4. 1- How must I do to use my 5 explanatory variables? 2- Is it the sum of variance fraction of each variable must be equal to 1. Thanks for your help. Komine -- View this

Hi, I used GAM function with this code: library(mgcv) modgam=gam(Z~X+Y,data=table) pred=predict(modgam,type="response") vis.gam(modgam,view=c("X","Y"),plot.type="contour",zlim=c(1,16)) My problem is on my figure, the predicted values begin by 0 to 16 with an interval equal 2: 1- I want that the predicted values (Z) begin by 1 until 16 with an interval

Hi, I created a figure with R and I want to save it in .pdf. I used this code: > pdf("res.pca.pdf",width=10,height=8) > library(FactoMineR) > res.pca<-PCA(acp) > res.pca > dev.off() When I go in my folder, I find an empty file ( 0 Ko). Do you know where is the problem. Thank you in advance -- View this message in context:

Hi, Instead to put colour in my histogram, I want to put symbols like lines, dots etc. Do you know the function that does it? Thank you in advance -- View this message in context: http://r.789695.n4.nabble.com/Not-colour-but-symbols-tp4490030p4490030.html Sent from the R help mailing list archive at Nabble.com.

Hi I want to overlay my raster and its boundary which is a shapefile. When I used thise code separately, all is ok: # Open raster >Image<-read.table("C:\\Users\\Documents\\Nouveau\\Frequence.txt",sep="",dec=",",header=TRUE) >testo<-rasterFromXYZ(Image) >plot(testo) >testo2 <- aggregate(testo,fact=10, fun=mean) >plot(testo2) # open

Hello. Here is my R code. I used the functional data . Now I need to use the functional data by applying the kernels instead of the xi, yi functions. Bonjour. Voici mon code en R . J'ai utiliser les donn?es fonctionnelles . Maintenant j'ai besoin d'utiliser les donn?es fonctionnelles en appliquant les noyaux ? la place des fontions xi, yi library(MASS)

Hi, My name is Curtis and I'm a 1st year student in Biochemistry at the University of Geneva. I need some help completing the code for my NEWTON ALGORITHM. It is a bonus exercice to our autumn semester maths exam and we can hand it in or not. Usually people copy and paste but I decided to sit down and review theory and ask for help left right and center. My problem is that I cannot get my

Hello again, I am stuck with this problem: I have: One Linux NAT Box. One internet connection. 100 clients in the LAN. Test 1: - Connect only one client to the server and download from it a file. -> The total speed recorded on the server is maximum (as expected - let''s say 128KB) Test 2: - Connect all 100 clients (somewhere in the evening) and let them browse - download, etc -

I''ve seen the problems with bug 6343667, but I haven''t seen the problem I have at the the moment. I started a scrub of a b72 system that doesn''t have any recent snapshots (none since the last scrub) and the % complete is cycling: scrub: scrub in progress, 69.08% done, 0h13m to go scrub: scrub in progress, 46.63% done, 0h28m to go scrub: scrub in progress, 6.36%

Hi all, I have a frequency data that looks like this. 3 2 1 5 What I want to get is the "decreasing" cumulative of this data yielding 11 8 6 5 0 Is there any? I am aware of cumsum(), which will yield 3 5 6 11. But it is not what I want. - G.V.

Hello, I'm having a strange problem with counter strike source and wine. I run at about 40fps for the first five minutes.. then with every new round, my fps decreases by about 20%... so by round 5 I'm down to 9 fps. I've tested this with both wine and cedega and get the same results. I'm running Fedora Core 8 on a core 2 duo processor w/ 2gigs of ram and 256MB video card.