similar to: exponential model 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, 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

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])

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, 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, 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 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, 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

Just upgraded to 2.7.6 and the yumrepo type does not write out our yum configs correctly, anyone experiencing this? Documentation hasn''t changed from what I can tell for this type. # facter -version 1.6.2 # puppetd --version 2.7.6 # facter architecture x86_64 # facter operatingsystem Fedora # facter operatingsystemrelease 14 ==== My manifest ==== yumrepo {

We're running Samba 3.0.22 on a Debian system with kernel 2.6.16.16. The file system is jfs with POSIX ACL and Security labels support. We have setup winbind so our Samba server grabs the user names and passwords from our NT PDC. I have tried creating files with two users. One is called scanner2 and belongs to the windows group scanning. The other user is Administrator and belongs to the

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 used simple linear regression with the R software and EXCEL on the same data. Although , I find the same R2=0.84, I find different estimated values (intercept and slope). For the R software (slope =0.0009, Intercept = -0.1478), for EXCEL (slope =927.7, Intercept = 154,41). When I use the estimated values from the R software, the results seem bad, however the results of Exel seem correct.

Hi, i'm not english and i'm not very familiar to R, and i'm asking if you can help me. I'm wondering how to create a multivariate normal an then repeat this for a sample of T=1000, and the save this result. Thank you very much for your helping -- View this message in context: http://r.789695.n4.nabble.com/Multivariate-Normal-and-loops-tp4633504.html Sent from the R help mailing

Back in June when I was fooling around with some programs I was writing, I found a serious buffer overflow in WindowMaker 0.60.0 and 0.52, but I assume previous versions are vulnerable as well. By replacing argv[0] of a program with a string longer than 249 characters, it is possible to overflow one of the programs buffers, causing it, and possibly X as well to crash. It is assumed this can

EXT3 developers: I am curious, if EXT3 is currently being used on the root partition in "data=ordered" mode (the default as I understand), and I want to have the it come up in data=journal mode, how do you effectuate this conversion? I would also be curious how to know if anything special is required for doing so for the /boot partition as well. I believe that with the /home partition,

I have a computer that dual boots between Windows and CentOS. Each has it's own hard drive. I suddenly have a problem with Windows, and may need to reinstall. I need it for applications like After Effects, Premiere, and other things that I am currently in the middle of a project with. It seems the system has become usnstable, it's preventing me from continuing to work, and I

Attention all List Members: We are in the process of migrating all Red Hat lists from the current list manager software/server running qmail/Smartlist to a new server running postfix and GNU Mailman (*). Within the next week you will receive more information about this migration including information on how to access your membership, including subscribe/unsubscribe information and instructions on

Hello, I am switching from SPSS-Windows to R-Linux. My university is very SPSS-oriented so maybe that's the cause of my problems. I am a beginner in R and my assignments are SPSS-oriented, so I hope I don't annoy anyone with my questions... Right now I've got 2 problems: -I have to evaluate discriminant functions I have calculated with lda(MASS). I can't find a measure that